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Surfaces and Interfaces

Self-ordered surface wrinkling patternsInterfaces and surfaces are where the action happens. Catalysis, molecular recognition, charge transfer, polymerization and many other critical processes take place at the boundary between one medium and another. With the need to integrate new materials into devices, and applications ranging from catalysis to sensors, medicine to self-cleaning surfaces, and displays to lasers, fundamental and applied studies of surface and interface processes and optimization are of critical importance in developing new technology to meet today's challenges. The selection of recent research articles presented below illustrates the vast potential of this field.

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Recent Articles

Kun Cong, Marcel Ritter, Steffi Stumpf, Bernd Schröter, Ulrich S. Schubert, Anna Ignaszak
Metal-Free Electrocatalyst for Oxygen Reduction: Synthesis-Controlled Density of Catalytic Centers and Impact on ORR [Short Communication]

Luca Guerrini, Željka Krpetić, Danny van Lierop, Ramon A. Alvarez-Puebla, Duncan Graham
Direct Surface-Enhanced Raman Scattering Analysis of DNA Duplexes [Communication]

Direct Surface-Enhanced Raman Scattering Analysis of DNA Duplexes

Accessing genomic information: A fast and affordable high-throughput screening method based on surface-enhanced Raman spectroscopy (SERS) is a low-cost and ultrasensitive genotyping strategy for gaining detailed genomic information on DNA duplexes. This method allows recognition of hybridization events, single-base mismatches, and base methylation.

Angew. Chem. Int. Ed., November 20, 2014, DOI: 10.1002/anie.201408558

Simon J. White, Steven D. Johnson, Mark A. Sellick, Agnieszka Bronowska, Peter G. Stockley, Christoph Wälti
The Influence of Two-Dimensional Organization on Peptide Conformation [Communication]

The Influence of Two-Dimensional Organization on Peptide Conformation

Collective action: Molecular crowding in the high-molecular density environment of a 2D peptide monolayer is shown to govern peptide conformation and function. The results show that these collective interactions need to be accounted for in the design and interpretation of experimental studies involving surface-immobilized molecular systems.

Angew. Chem. Int. Ed., November 20, 2014, DOI: 10.1002/anie.201408971

Kang Cui, Florian Schlütter, Oleksandr Ivasenko, Milan Kivala, Matthias G. Schwab, Shern-Long Lee, Stijn F. L. Mertens, Kazukuni Tahara, Yoshito Tobe, Klaus Müllen, Kunal S. Mali, Steven De Feyter
Multicomponent Self-Assembly with a Shape-Persistent N-Heterotriangulene Macrocycle on Au(111) [Full Paper]

Multicomponent Self-Assembly with a Shape-Persistent N-Heterotriangulene Macrocycle on Au(111)

Three is company: Multicomponent supramolecular network formation on a Au(111) surface is demonstrated. A hybrid system consisting of covalent and noncovalent hosts was realized when the macrocycle adsorbed in the cavity of a noncovalent host network was used to capture C60 in a spatially repetitive fashion (see figure).

Chem. Eur. J., November 20, 2014, DOI: 10.1002/chem.201405305

M. Soledade C. S. Santos, João Carlos R. Reis
Activity Coefficients in the Surface Phase of Liquid Mixtures [Article]

Activity Coefficients in the Surface Phase of Liquid Mixtures

How large is alcohol surface activity? Reliable surface phase activity coefficients are calculated for ethanol (red symbols) and water (blue symbols) in their mixtures at T=298 K. These surface phase activity coefficients are identical to bulk phase activity coefficients at both ends of the composition scale and take smaller values than those of the equilibrium bulk phase, fulfilling surface phase thermodynamic description.

ChemPhysChem, November 17, 2014, DOI: 10.1002/cphc.201402624

Jinshui Zhang, Song-Hai Chai, Zhen-An Qiao, Shannon M. Mahurin, Jihua Chen, Youxing Fang, Shun Wan, Kimberly Nelson, Pengfei Zhang, Sheng Dai
Porous Liquids: A Promising Class of Media for Gas Separation [Communication]

Porous Liquids: A Promising Class of Media for Gas Separation

Perforated liquids: Functionalizing hollow silica spheres with suitable polymer species can produce a porous liquid containing empty silica cavities. Taking advantage of their liquid-like polymeric matrixes as the separation medium and the empty cavities as the gas transport pathway they can function as a promising candidates for gas separation.

Angew. Chem. Int. Ed., November 17, 2014, DOI: 10.1002/anie.201409420

Arnaud Glaria, Jérémy Cure, Kilian Piettre, Yannick Coppel, Cédric-Olivier Turrin, Bruno Chaudret, Pierre Fau
Deciphering Ligands’ Interaction with Cu and Cu2O Nanocrystals Surface by NMR Solution Tools [Full Paper]

Deciphering Ligands’ Interaction with Cu and Cu2O Nanocrystals Surface by NMR Solution Tools

Scratch the surface: An in-depth NMR study of long alkyl chain ligands’ interactions with copper nanoparticles is presented (see figure). The effects of the functional head group on the oxidation process of the nanoparticles are investigated.

Chem. Eur. J., November 13, 2014, DOI: 10.1002/chem.201403835

Casie R. Hilliard, Sugam Kharel, Kyle J. Cluff, Nattamai Bhuvanesh, John A. Gladysz, Janet Blümel
Structures and Unexpected Dynamic Properties of Phosphine Oxides Adsorbed on Silica Surfaces [Communication]

Structures and Unexpected Dynamic Properties of Phosphine Oxides Adsorbed on Silica Surfaces

Solid-state NMR spectroscopy of selected phosphine oxides adsorbed on silica surfaces establishes the surface mobilities, even of phosphine oxides with high melting points. Crystal structures of the adducts Ph3PO·HOSiPh3 and Cy3PO·H2O indicate that the interactions with silica involve hydrogen bonding of the P=O group to adsorbed water and surface silanol groups (see figure).

Chem. Eur. J., November 13, 2014, DOI: 10.1002/chem.201404880

Bálint Náfrádi, Mohammad Choucair, Peter D. Southon, Cameron J. Kepert, László Forró
Strong Interplay between the Electron Spin Lifetime in Chemically Synthesized Graphene Multilayers and Surface-Bound Oxygen [Full Paper]

Strong Interplay between the Electron Spin Lifetime in Chemically Synthesized Graphene Multilayers and Surface-Bound Oxygen

Sensitive spintronics: The spintronics applicability of chemically synthesized graphene sheets was found to be extremely sensitive to oxygen. The exceptionally long 140 ns electron spin lifetime is reduced by an order of magnitude by introducing small concentrations of physisorbed O2 onto the graphene surface (see figure; TS=intrinsic spin lifetimes). Our results highlight the importance of chemical environment control and device packing in practical graphene-based spintronic applications.

Chem. Eur. J., November 13, 2014, DOI: 10.1002/chem.201404309

Viktor Čolić, Jakub Tymoczko, Artjom Maljusch, Alberto Ganassin, Wolfgang Schuhmann, Aliaksandr S. Bandarenka
Experimental Aspects in Benchmarking of the Electrocatalytic Activity [Article]

Experimental Aspects in Benchmarking of the Electrocatalytic Activity

Not as easy as it seems: Benchmarking of the electrocatalytic activity can be unexpectedly very demanding due to experimental issues which are often underestimated.

ChemElectroChem, November 11, 2014, DOI: 10.1002/celc.201402295

Ankur S. Chaurasia, Dimitris N. Josephides, Shahriar Sajjadi
Large Ultrathin Shelled Drops Produced via Non-Confined Microfluidics [Article]

Large Ultrathin Shelled Drops Produced via Non-Confined Microfluidics

Tune thin: Core–shell droplets with ultrathin shells are known to be highly stable and are excellent for encapsulation applications. Producing such droplets in a quiescent continuous phase makes the approach easily scalable. An experimental investigation on producing such millimetric structures via microfluidics is presented. The tuning of the shell thickness via surfactant concentrations (see picture) is also discussed.

ChemPhysChem, November 7, 2014, DOI: 10.1002/cphc.201402606

Mabel Torréns, Mayreli Ortiz, Anthony P. F. Turner, Valerio Beni, Ciara K. O'Sullivan
Controlled Zn-Mediated Grafting of Thin Layers of Bipodal Diazonium Salt on Gold and Carbon Substrates [Full Paper]

Controlled Zn-Mediated Grafting of Thin Layers of Bipodal Diazonium Salt on Gold and Carbon Substrates

Hard graft: An approach to create highly stable diazonium layers grafted on gold and carbon surfaces through a Zn-mediated chemical reduction is reported (see figure). The developed technique resulted in highly stable surfaces, representing a new approach for the controlled, rapid, and potentiostat-free grafting of thin layers of diazonium salts.

Chem. Eur. J., November 5, 2014, DOI: 10.1002/chem.201405121

Yuxiao Ding, Xiaoyan Sun, Liyun Zhang, Shanjun Mao, Zailai Xie, Zhong-Wen Liu, Dang Sheng Su
Entrapping an Ionic Liquid with Nanocarbon: The Formation of a Tailorable and Functional Surface [Communication]

Entrapping an Ionic Liquid with Nanocarbon: The Formation of a Tailorable and Functional Surface

Utilizing the entrapping and directing effects of a nanocarbon graphitic surface, ionic liquids without cross-linkable groups, which were believed to be unable to be charred under pyrolysis conditions, could form a graphitic layer endowed with highly tailorable surface properties. B, N (blue dots), and C were confirmed to share same hexagonal rings, which provided more designable electronic properties.

Angew. Chem. Int. Ed., November 4, 2014, DOI: 10.1002/anie.201408201

Pablo S. Fernández, Cauê A. Martins, Camilo A. Angelucci, Janaina F. Gomes, Giuseppe A. Camara, Maria E. Martins, Germano Tremiliosi-Filho
Evidence for Independent Glycerol Electrooxidation Behavior on Different Ordered Domains of Polycrystalline Platinum [Article]

Evidence for Independent Glycerol Electrooxidation Behavior on Different Ordered Domains of Polycrystalline Platinum

Surface disorder: Monitoring of the oxidation currents of glycerol in sulfuric acid revealed that the electrooxidation of glycerol is highly sensitive to the order of the polycrystalline Pt atoms. The combined responses of disordered single crystals were similar to that of polycrystalline Pt. Changes in the current values of the specific potentials, at which each oxidation takes place, suggest that different ordered domains of Pt independently oxidize glycerol.

ChemElectroChem, November 3, 2014, DOI: 10.1002/celc.201402291

Junwei Li, Yuan Li, Carrie Y. K. Chan, Ryan T. K. Kwok, Hongkun Li, Pavel Zrazhevskiy, Xiaohu Gao, Jing Zhi Sun, Anjun Qin, Ben Zhong Tang
An Aggregation-Induced-Emission Platform for Direct Visualization of Interfacial Dynamic Self-Assembly [Communication]

An Aggregation-Induced-Emission Platform for Direct Visualization of Interfacial Dynamic Self-Assembly

Monitoring the interfacial world: A new in situ imaging technology capable of selectively highlighting interfacial self-assembly in real time was developed by employing the unique photophysical properties of aggregation-induced emission (AIE). Application of this technology enabled direct high-contrast visualization of microemulsion evolution, “coffee-ring” formation, and breath-figure dynamics by fluorescence microscopy.

Angew. Chem. Int. Ed., October 31, 2014, DOI: 10.1002/anie.201408757

Yeohoon Yoon, Yingge Du, Juan C. Garcia, Zihua Zhu, Zhi-Tao Wang, Nikolay G. Petrik, Gregory A. Kimmel, Zdenek Dohnalek, Michael A. Henderson, Roger Rousseau, N. Aaron Deskins, Igor Lyubinetsky
Anticorrelation between Surface and Subsurface Point Defects and the Impact on the Redox Chemistry of TiO2(110) [Article]

Anticorrelation between Surface and Subsurface Point Defects and the Impact on the Redox Chemistry of TiO2(110)

Spatial correlation of defects: Oxygen vacancies (VO), the dominant surface defects at TiO2(110), are absent in the vicinity of positively charged subsurface point defects. These point defects, in turn, are located only beyond the nearest subsurface region, which is thus void of any charged defects (see figure).

ChemPhysChem, October 30, 2014, DOI: 10.1002/cphc.201402599

Xin-Hao Li, Yi-Yu Cai, Ling-Hong Gong, Wei Fu, Kai-Xue Wang, Hong-Liang Bao, Xiao Wei, Jie-Sheng Chen
Photochemically Engineering the Metal–Semiconductor Interface for Room-Temperature Transfer Hydrogenation of Nitroarenes with Formic Acid [Full Paper]

Photochemically Engineering the Metal–Semiconductor Interface for Room-Temperature Transfer Hydrogenation of Nitroarenes with Formic Acid

A mild photochemical approach was applied to construct highly coupled metal–semiconductor dyads (example in picture: carbon nitride), which were found to catalyze the hydrogenation of nitrobenzene. Aniline was produced in excellent yield (>99 %, TOF 1183) using formic acid as hydrogen source and water as solvent at room temperature. This process is applicable to a many nitroarenes without the involvement of high-pressure gases or sacrificial additives.

Chem. Eur. J., October 21, 2014, DOI: 10.1002/chem.201404325

Ming Li, Jeon Woong Kang, Ramachandra Rao Dasari, Ishan Barman
Shedding Light on the Extinction-Enhancement Duality in Gold Nanostar-Enhanced Raman Spectroscopy [Communication]

Shedding Light on the Extinction-Enhancement Duality in Gold Nanostar-Enhanced Raman Spectroscopy

Gold nanostars: The relationship between the enhancement by surface-enhanced Raman spectroscopy (SERS) and the localized surface plasmon resonance (LSPR) band is investigated (see picture). The competition between the field enhancement and the optical extinction causes the maximum enhancement factor occurring at a blue-shifted LSPR band from the excitation wavelength rather than at the on-resonance position.

Angew. Chem. Int. Ed., October 21, 2014, DOI: 10.1002/anie.201409314

Ronald Göbel, Peter Hesemann, Alwin Friedrich, Regina Rothe, Helmut Schlaad, Andreas Taubert
Modular Thiol–Ene Chemistry Approach towards Mesoporous Silica Monoliths with Organically Modified Pore Walls [Full Paper]

Modular Thiol–Ene Chemistry Approach towards Mesoporous Silica Monoliths with Organically Modified Pore Walls

More functional: The surface modification of mesoporous silica monoliths through thiol–ene chemistry is reported (see figure). Mesoporous silica monoliths with vinyl, allyl, and thiol groups were synthesized through a sol–gel hydrolysis–polycondensation reaction The different reactivity of the vinyl and allyl groups on the pore wall affects the addition reaction, and hence, the degree of the pore-wall functionalization.

Chem. Eur. J., October 21, 2014, DOI: 10.1002/chem.201403982

Pierre Charbonnaz, Yingjie Zhao, Raluca Turdean, Santiago Lascano, Naomi Sakai, Stefan Matile
Surface Architectures Built around Perylenediimide Stacks [Full Paper]

Surface Architectures Built around Perylenediimide Stacks

Going far: Long-distance charge transport is synthetically accessible from double-channel systems, but not from ion-gated or from triple- or single-channel photosystems with central perylenediimide stacks. Hole- rather than electron-transporting perylenediimides and maximized charge separation rather than minimized charge recombination give the best activities (see picture).

Chem. Eur. J., October 21, 2014, DOI: 10.1002/chem.201404423

Ran Long, Zhoulv Rao, Keke Mao, Yu Li, Chao Zhang, Qiliang Liu, Chengming Wang, Zhi-Yuan Li, Xiaojun Wu, Yujie Xiong
Efficient Coupling of Solar Energy to Catalytic Hydrogenation by Using Well-Designed Palladium Nanostructures [Communication]

Efficient Coupling of Solar Energy to Catalytic Hydrogenation by Using Well-Designed Palladium Nanostructures

Taking shape: A Ru3+-mediated synthesis has been developed for unique Pd concave nanostructures which can directly harvest UV-to-visible light for styrene hydrogenation (see figure). The catalytic efficiency under full-spectrum irradiation at room temperature turns out to be comparable to that of the thermally (70 °C) driven reaction. The yields are higher than those obtained using Pd nanocrystals such as nanocubes and octahedrons.

Angew. Chem. Int. Ed., October 19, 2014, DOI: 10.1002/anie.201407785

NaGdF4 Nanoparticles Coated with Functionalised Ethylenediaminetetraacetic Acid as Versatile Probes for Dual Optical and Magnetic Resonance Imaging

Caught on camera: NaGdF4 nanoparticles coated with ethylenediaminetetraacetic acid (EDTA) chelators functionalized with organic moieties and luminescent dyes were prepared and characterized, and their potential as dual probes for optical/magnetic resonance imaging (MRI) imaging was investigated (see figure).

ChemPlusChem, October 16, 2014, DOI: 10.1002/cplu.201402245

Yingjie Ma, Tomasz Marszalek, Zhongyi Yuan, Rene Stangenberg, Wojciech Pisula, Long Chen, Klaus Müllen
A Crown Ether Decorated Dibenzocoronene Tetracarboxdiimide Chromophore: Synthesis, Sensing, and Self-Organization [Communication]

A Crown Ether Decorated Dibenzocoronene Tetracarboxdiimide Chromophore: Synthesis, Sensing, and Self-Organization

Sensing Sensibility: A macrocyclic dibenzocoronene tetracarboxdiimide containing two benzo-21-crown-7 groups has been synthesized. It shows liquid-crystalline behavior and selectively binds Pb2+ or K+ to form 1:2 complexes in solution. The complexation leads to a significant increase in fluorescence. The surface organization of discotic columnar structures, in the solid-state, can be controlled by selective ion binding.

Chem. Asian J., October 15, 2014, DOI: 10.1002/asia.201403037

Dadi Niranjan Kumar, Anik Roy, Amarkant Jha, Arvind Sambasivan, G. Harikrishnan
Polymeric Foaming with Nanoscale Nucleants: A Surface Nanobubble Mechanism [Article]

Polymeric Foaming with Nanoscale Nucleants: A Surface Nanobubble Mechanism

Hold the foam: A surface nanobubble-based diffusion mechanism is proposed that accounts for bubble generation during polymeric foaming in the presence of dispersed nanoparticles. Estimated final bubble sizes in foam are compared with experimentally determined foam morphologies. This simple continuum model gives good agreement between theory and experiment, and can also predict the large difference between nucleating efficiencies of nanoparticles in reactive and nonreactive foaming.

ChemPhysChem, October 15, 2014, DOI: 10.1002/cphc.201402569

Yue Wang, Zhi Yu, Wei Ji, Yoshito Tanaka, Huimin Sui, Bing Zhao, Yukihiro Ozaki
Enantioselective Discrimination of Alcohols by Hydrogen Bonding: A SERS Study [Communication]

Enantioselective Discrimination of Alcohols by Hydrogen Bonding: A SERS Study

Efficient and generic enantioselective discrimination of various chiral alcohols is achieved by surfaced-enhanced Raman scattering (SERS) spectroscopy. This approach is label-free, does not employ any chiral reagents, and may lead to the development of novel enantiosensing strategies.

Angew. Chem. Int. Ed., October 10, 2014, DOI: 10.1002/anie.201407642

Graphene Oxide Nanosheets at the Water–Organic Solvent Interface: Utilization in One-Pot Adsorption and Reactive Extraction of Dye Molecules

Cleaner water: Bubble formation at the water–organic solvent interface is dependent on the pH of the medium and the concentration of graphene oxide present. Graphene oxide nanosheets are utilized as carriers for the reactive extraction of methyl green and methyl blue dyes from the aqueous to the organic phase with extraction efficiencies of up to 98.2 and 83.6%, respectively.

ChemPhysChem, October 9, 2014, DOI: 10.1002/cphc.201402554

Nils Bartels, Bastian C. Krüger, Daniel J. Auerbach, Alec M. Wodtke, Tim Schäfer
Controlling an Electron-Transfer Reaction at a Metal Surface by Manipulating Reactant Motion and Orientation [Communication]

Controlling an Electron-Transfer Reaction at a Metal Surface by Manipulating Reactant Motion and Orientation

The transfer of vibrational energy in collisions of an NO molecule with a gold surface proceeds by electron transfer. Thanks to new optical pumping and orientation methods, all molecular degrees of freedom important to this process can be controlled. The probability of the electron-transfer reaction is enhanced by increased translational and vibrational energy as well as by proper orientation of the reactant.

Angew. Chem. Int. Ed., October 8, 2014, DOI: 10.1002/anie.201407051

Nemanja Danilovic, Ramachandran Subbaraman, Kee Chul Chang, Seo Hyoung Chang, Yijin Kang, Joshua Snyder, Arvydas Paul Paulikas, Dusan Strmcnik, Yong Tae Kim, Deborah Myers, Vojislav R. Stamenkovic, Nenad M. Markovic
Using Surface Segregation To Design Stable Ru-Ir Oxides for the Oxygen Evolution Reaction in Acidic Environments [Communication]

Using Surface Segregation To Design Stable Ru-Ir Oxides for the Oxygen Evolution Reaction in Acidic Environments

A hive of activity: Tuning the near-surface composition of Ru and Ir elements in a bimetallic oxide by surface segregation results in the formation of a nanosegregated domain (see picture) that balances the stability and activity of surface atoms. A Ru0.5Ir0.5 alloy prepared by this method exhibited a stability four-times higher than the best Ru-Ir oxygen evolution reaction materials, but the same activity.

Angew. Chem. Int. Ed., October 8, 2014, DOI: 10.1002/anie.201406455

Hristiyan A. Aleksandrov, Sergey M. Kozlov, Swetlana Schauermann, Georgi N. Vayssilov, Konstantin M. Neyman
How Absorbed Hydrogen Affects the Catalytic Activity of Transition Metals [Communication]

How Absorbed Hydrogen Affects the Catalytic Activity of Transition Metals

Understanding hydrogenation on transition metals: Subsurface hydrogen, Hsub, is shown to significantly influence the stability and the reactivity of the adsorbed hydrogen in two different ways. Calculations on a representative reaction, ethyl hydrogenation, show that it is accelerated on Pd and Pt, but slowed down on Ni and Rh in the presence of Hsub.

Angew. Chem. Int. Ed., October 7, 2014, DOI: 10.1002/anie.201405738

Beniamino Iandolo, Anders Hellman
The Role of Surface States in the Oxygen Evolution Reaction on Hematite [Communication]

The Role of Surface States in the Oxygen Evolution Reaction on Hematite

Riding on the surface states highway: First-principles calculations and photoelectrochemical measurements provide a framework for deepened understanding of the oxygen evolution reaction from water splitting on hematite. The reaction takes place on the O-terminated hematite surface via surface states close in energy to the top of the valence band.

Angew. Chem. Int. Ed., October 3, 2014, DOI: 10.1002/anie.201406800

Yi Zhang, Jie Wu, Hongzhi Wang, J. Carson Meredith, Sven H. Behrens
Stabilization of Liquid Foams through the Synergistic Action of Particles and an Immiscible Liquid [Communication]

Stabilization of Liquid Foams through the Synergistic Action of Particles and an Immiscible Liquid

Capillary foams are a new class of foams, in which particles and a secondary liquid jointly adsorb at the surface of gas bubbles within a bulk liquid. Particles that adsorb preferentially at the interface of the secondary liquid can mediate its spreading around the gas bubbles. The bubbles are further entrapped in a network of excess secondary-liquid-bridged particles in the primary liquid.

Angew. Chem. Int. Ed., October 3, 2014, DOI: 10.1002/anie.201405816

Development of Electrolytes towards Achieving Safe and High-Performance Energy-Storage Devices: A Review

Liquid, solid, or gel? High-performance electrolytes are important for the success of advanced energy-storage devices. From the view of battery structures and the electrolyte, this Review not only summarizes and discusses the up-to-date development of various electrolyte materials (liquids, solids, and gels), but also emphasizes a comprehensive understanding of electrolyte properties, which is critical for the design of high-performance electrolytes.

ChemElectroChem, September 26, 2014, DOI: 10.1002/celc.201402277

Assembling Mixed Carboxylic Acid Molecules on Hierarchical Structured Aluminum Substrates for the Fabrication of Superoleophobic Surfaces with Controlled Oil Adhesion

Like oil and water: Superoleophobic surfaces with tunable adhesion were obtained by assembling mixed carboxylic acid on nanostructured aluminum substrates. The surface adhesion can be controlled by simply controlling the surface chemical composition (see figure).

ChemPlusChem, September 22, 2014, DOI: 10.1002/cplu.201402237

Marvin U. Herrera, Takashi Ichii, Kuniaki Murase, Hiroyuki Sugimura
Use of Diode Analogy in Explaining the Voltammetric Characteristics of Immobilized Ferrocenyl Moieties on a Silicon Surface [Communication]

Use of Diode Analogy in Explaining the Voltammetric Characteristics of Immobilized Ferrocenyl Moieties on a Silicon Surface

The ferrocene-terminated Si (Si-Fc) as diodes: The diode nature of Si-Fc samples is attributed to the existence of a potential barrier between the Si substrate and the ferrocene layer. The diode nature of Si-Fc samples can be associated with some of its characteristics, such as the dependence of its cyclic voltammetry response on types of substrate and illumination.

ChemElectroChem, September 15, 2014, DOI: 10.1002/celc.201402144

Maarten Bloemen, Ben Sutens, Ward Brullot, Ann Gils, Nick Geukens, Thierry Verbiest
Two-Step Directional Surface Modification of Iron Oxide Nanoparticles with Protected Siloxanes [Communication]

Two-Step Directional Surface Modification of Iron Oxide Nanoparticles with Protected Siloxanes

Nanoparticle functionality: Iron oxide nanoparticles are functionalized by protected functional siloxanes. The functional group is deprotected on the nanoparticle itself, solving multiple issues related to the use of siloxanes. This procedure is highly reproducible and not limited to the discussed functionalities.

ChemPlusChem, September 15, 2014, DOI: 10.1002/cplu.201402283

Xiaoming Li, Yanli Liu, Xiufeng Song, Hao Wang, Haoshuang Gu, Haibo Zeng
Intercrossed Carbon Nanorings with Pure Surface States as Low-Cost and Environment-Friendly Phosphors for White-Light-Emitting Diodes [Communication]

Intercrossed Carbon Nanorings with Pure Surface States as Low-Cost and Environment-Friendly Phosphors for White-Light-Emitting Diodes

Fluorescent nanomaterials: A one-step hydrothermal method to synthesize intercrossed carbon nanorings (see picture) with relatively pure hydroxy surface states is reported. The hydroxyl surface states make it possible to overcome aggregation-induced quenching effects and to emit scarce stable yellow-orange luminescence in both colloidal and solid states.

Angew. Chem. Int. Ed., September 11, 2014, DOI: 10.1002/anie.201406836

Hao Wang, Zachary D. Schultz
TERS Detection of αVβ3 Integrins in Intact Cell Membranes [Communication]

TERS Detection of αVβ3 Integrins in Intact Cell Membranes

Staying on tip: RGD–Integrin binding in intact cell membranes is detected using controlled plasmonics between a cyclic-RGD peptide functionalized nanoparticle and a TERS tip. The observed TERS signal from the nanoparticles on cells matches the surface enhanced Raman signal for the purified αVβ3 Integrin receptor, demonstrating the selectivity. This enables the characterization of receptor binding in intact cell membranes.

ChemPhysChem, September 11, 2014, DOI: 10.1002/cphc.201402466

Megan Buonaiuto, Susanna Neuhold, David J. Schroeder, Carmen M. Lopez, John T. Vaughey
Functionalizing the Surface of Lithium-Metal Anodes [Full Paper]

Functionalizing the Surface of Lithium-Metal Anodes

Interfacing: Stabilizing the surface of lithium metal is an important challenge that must be overcome to enable lithium–air or lithium–sulfur batteries to succeed. Controlling the interface between the electrolyte and lithium is thus critical. By attaching vinyl-containing silanes to the hydroxy-terminated surface of lithium metal, a critical functional group is introduced at this interface that can be used to tailor this critical interaction (see figure; scale bars: 500 μm).

ChemPlusChem, September 3, 2014, DOI: 10.1002/cplu.201402084

Charles Esnault, Axelle Renodon-Cornière, Masayuki Takahashi, Nathalie Casse, Nicolas Delorme, Guy Louarn, Fabrice Fleury, Jean-François Pilard, Benoît Chénais
Assessment of DNA Binding to Human Rad51 Protein by using Quartz Crystal Microbalance and Atomic Force Microscopy: Effects of ADP and BRC4-28 Peptide Inhibitor [Article]

Assessment of DNA Binding to Human Rad51 Protein by using Quartz Crystal Microbalance and Atomic Force Microscopy: Effects of ADP and BRC4-28 Peptide Inhibitor

The long and short of it: A Au surface is modified by in situ reduction of aryldiazonium salts, and single-stranded DNA is covalently linked to the surface. A study of interactions of human Rad51 protein with DNA indicated that the presence of ADP promotes elongation of the Rad51 filament, whereas BRC4-28 peptide inhibits filament assembly.

ChemPhysChem 2014, 15, No. 17, 3753-3760

D. Roy, N. Tiwari, K. Mukhopadhyay, T. Shripathi, A. K. Saxena
The Role of Functional Moieties on Carbon Nanotube Surfaces in Solar Energy Conversion [Article]

The Role of Functional Moieties on Carbon Nanotube Surfaces in Solar Energy Conversion

Nanotube-based organic photovoltaics: An easily dispersible multiwalled carbon nanotube (MWCNT) derivative is prepared, and provides a platform for the synthesis of the phenyl butyric acid methyl ester derivative. Subsequently, pristine MWCNTs and the amide and ester derivatives are studied to provide an insight into influence of nanotube morphology on photovoltaic characteristics.

ChemPhysChem 2014, 15, No. 17, 3839-3847

Silver Nanoparticles Supported on CeO2-SBA-15 by Microwave Irradiation Possess Metal–Support Interactions and Enhanced Catalytic Activity

Nuked for control: Silver nanoparticles deposited on CeO2-SBA-15 supports possess tunable particle sizes and metal–support interactions (MSIs) when prepared by microwave (MW) irradiation owing to the strong charge polarization of CeO2 clusters (i.e., MW absorption; see figure). The Ag nanoparticle size and MSIs were responsible for the high turnover frequency numbers in ammonia borane dehydrogenation and 4-nitrophenol reduction.

Chem. Eur. J. 2014, 20, No. 48, 15746-15752

Edwin A. Baquero, Simon Tricard, Juan Carlos Flores, Ernesto de Jesús, Bruno Chaudret
Highly Stable Water-Soluble Platinum Nanoparticles Stabilized by Hydrophilic N-Heterocyclic Carbenes [Communication]

Highly Stable Water-Soluble Platinum Nanoparticles Stabilized by Hydrophilic N-Heterocyclic Carbenes

On the surface: The thermal decomposition of organometallic complexes with N-heterocyclic carbene ligands affords Pt nanoparticles that are soluble and stable in water for an indefinite period. The 13C–195Pt coupling observed by solid-state NMR spectroscopy confirms carbene coordination to the nanoparticle surface.

Angew. Chem. Int. Ed. 2014, 53, No. 48, 13220-13224

Ying Wan, Yi-Ge Zhou, Mahla Poudineh, Tina Saberi Safaei, Reza M. Mohamadi, Edward H. Sargent, Shana O. Kelley
Highly Specific Electrochemical Analysis of Cancer Cells using Multi-Nanoparticle Labeling [Communication]

Highly Specific Electrochemical Analysis of Cancer Cells using Multi-Nanoparticle Labeling

Needle in a haystack: A chip-based electrochemical assay using metal nano-particles (MNPs, see picture) allows simultaneous detection of multiple different biomarkers on the surfaces of cancer cells, enabling discrimination between cancer cells and normal blood cells. As few as two cells captured per electrode can be detected.

Angew. Chem. Int. Ed. 2014, 53, No. 48, 13145-13149

Fabian Bebensee, Katrine Svane, Christian Bombis, Federico Masini, Svetlana Klyatskaya, Flemming Besenbacher, Mario Ruben, Bjørk Hammer, Trolle R. Linderoth
A Surface Coordination Network Based on Copper Adatom Trimers [Communication]

A Surface Coordination Network Based on Copper Adatom Trimers

Cu-trimer nodes: Using scanning tunneling microscopy and X-ray photoelectron spectroscopy, tetrahydroxybenzene (THB) is shown to dehydrogenate when adsorbed on a Cu(111) surface and form a highly reactive ligand. Density functional calculations confirm that the ligand stabilizes copper adatom trimers and creates a surface coordination network that is a two-dimensional analogue of metal–organic frameworks.

Angew. Chem. Int. Ed. 2014, 53, No. 47, 12955-12959

Fernando Novio, Julia Lorenzo, Fabiana Nador, Karolina Wnuk, Daniel Ruiz-Molina
Carboxyl Group (-CO2H) Functionalized Coordination Polymer Nanoparticles as Efficient Platforms for Drug Delivery [Full Paper]

Carboxyl Group (-CO2H) Functionalized Coordination Polymer Nanoparticles as Efficient Platforms for Drug Delivery

Multifunctional CPPs: Robust and biocompatible coordination polymer nanoparticles (CPPs) with enhanced thermal and colloidal stabilities were obtained by incorporation of carboxyl groups on the amorphous structure. The surface carboxyl groups can be subsequently functionalized, generating a multifunctional nanoplatform for theranostic applications such as drug delivery and imaging (see scheme; EDC=1-ethyl-3-(3-dimethylaminopropyl)carbodiimide; NHS=N-hydroxysuccinimide).

Chem. Eur. J. 2014, 20, No. 47, 15443-15450

Shenghua Ma, Daming Yong, Ying Zhang, Xuejing Wang, Xiaojun Han
A Universal Approach for the Reversible Phase Transfer of Hydrophilic Nanoparticles [Full Paper]

A Universal Approach for the Reversible Phase Transfer of Hydrophilic Nanoparticles

Reversible phase transfer: Octadecyltrimethoxysilane (ODTS) has been used to cap the surfaces of hydrophilic magnetic nanoparticles (NPs), thereby allowing their transfer into nonpolar solution. The resulting hydrophobic magnetic nanoparticles were transferred back into aqueous solution by covering them with a lipid monolayer (see figure; Egg-PC=egg yolk phosphatidylcholine).

Chem. Eur. J. 2014, 20, No. 47, 15580-15586

Quinone-Modified Surfaces for Enhanced Enzyme–Electrode Interactions in Pyrroloquinoline-Quinone-Dependent Glucose Dehydrogenase Anodes

Enzymes and electrodes in sync: Modification of carbonaceous electrodes with mediators with the appropriate redox potential, and a fast electron-transfer rate, creates an “electron sink” on the electrode surface. This effect pulls electrons from the cofactor, increasing the electron-transfer rate and generating higher current densities.

ChemElectroChem 2014, 1, No. 11, 2017-2028

Anderson G. M. da Silva, Michele L. de Souza, Thenner S. Rodrigues, Rafael S. Alves, Marcia L. A. Temperini, Pedro H. C. Camargo
Rapid Synthesis of Hollow Ag–Au Nanodendrites in 15 Seconds by Combining Galvanic Replacement and Precursor Reduction Reactions [Full Paper]

Rapid Synthesis of Hollow Ag–Au Nanodendrites in 15 Seconds by Combining Galvanic Replacement and Precursor Reduction Reactions

Spiky and hollow: By using Ag nanospheres as seeds, hollow Ag–Au nanodendrites can be prepared in 15 s by a combination of a galvanic replacement reaction between Ag and AuCl4(aq), and a AuCl4(aq) reduction using hydroquinone in the presence of polyvinylpyrrolidone (PVP) in water. Owing to their sharp tips, the Ag–Au nanodendrites were effective substrates for surface-enhanced Raman scattering (SERS) detection of 4-mercaptopyridine and rhodamine 6G.

Chem. Eur. J. 2014, 20, No. 46, 15040-15046

Yit Lung Khung, Siti Hawa Ngalim, Laura Meda, Dario Narducci
Preferential Formation of Si-O-C over Si-C Linkage upon Thermal Grafting on Hydrogen-Terminated Silicon (111) [Full Paper]

Preferential Formation of Si-O-C over Si-C Linkage upon Thermal Grafting on Hydrogen-Terminated Silicon (111)

Si prefers alcohol: Low-temperature hydrosilylation led to a preferential surface grafting of the Si-O-C linkage instead of the classic Si-C linkage when reacted with an alcohol carrying a short bifunctional alkyne (see figure). Even in the presence of another alkyne competitor (trifluoroalkyne) at equimolar concentration, the Si-O-C bond remained the dominant linkage to the silicon surface through nucleophilic reaction.

Chem. Eur. J. 2014, 20, No. 46, 15151-15158

Thomas Caron, Eric Pasquinet, Arie van der Lee, Robert B. Pansu, Vincent Rouessac, Simon Clavaguera, Myriam Bouhadid, Françoise Serein-Spirau, Jean-Pierre Lère-Porte, Pierre Montméat
Efficient Sensing of Explosives by Using Fluorescent Nonporous Films of Oligophenyleneethynylene Derivatives Thanks to Optimal Structure Orientation and Exciton Migration [Full Paper]

Efficient Sensing of Explosives by Using Fluorescent Nonporous Films of Oligophenyleneethynylene Derivatives Thanks to Optimal Structure Orientation and Exciton Migration

Explosive sensing: A structural mechanism that takes into account both the special conformation of oligophenyleneethynylene molecules at a thin-film surface and antenna effects enabled by exciton migration is presented (see figure). This mechanism explains why these crystallized fluorescent films exhibit excellent sensing properties toward nitroaromatic vapors despite the fact that they are nonporous.

Chem. Eur. J. 2014, 20, No. 46, 15069-15076

Kristina I. Lilova, Carolyn I. Pearce, Kevin M. Rosso, Alexandra Navrotsky
Energetics of Spinels in the Fe-Ti-O System at the Nanoscale [Article]

Energetics of Spinels in the Fe-Ti-O System at the Nanoscale

To nano or not to nano? Assessment of the mixing thermodynamics and the effect of the particle size on Fe-Ti spinel oxides leads to an intriguing conclusion about the heats of mixing on both macro and nanoscale. The energetics of the nanosized spinel oxides turn out to be predictable based only on knowledge of their macroscale energetics and surface energies, which are consistent regardless of composition. The findings have important implications for designing nanoscale spinel oxides with desirable properties.

ChemPhysChem 2014, 15, No. 16, 3655-3662

Florence Pennetreau, Olivier Riant, Sophie Hermans
One-Step Double Covalent Functionalization of Reduced Graphene Oxide with Xanthates and Peroxides [Communication]

One-Step Double Covalent Functionalization of Reduced Graphene Oxide with Xanthates and Peroxides

Two birds with one stone! Xanthates and peroxides are used as radical precursors to graft various functions at the reduced graphene oxide surface. The developed method allows a double functionalization by both xanthate and peroxide radicals to be performed in one single step. The versatility of the method is highlighted by the grafting of seven xanthates and four peroxides. The resulting material shows no visible structural damage and long-lasting dispersibility.

Chem. Eur. J. 2014, 20, No. 46, 15009-15012

Anyin Li, Zane Baird, Soumabha Bag, Depanjan Sarkar, Anupama Prabhath, Thalappil Pradeep, R. Graham Cooks
Using Ambient Ion Beams to Write Nanostructured Patterns for Surface Enhanced Raman Spectroscopy [Communication]

Using Ambient Ion Beams to Write Nanostructured Patterns for Surface Enhanced Raman Spectroscopy

Electrolytic spray deposition was employed for the formation of nanoparticle spots on various substrates in air. These materials are rugged, versatile substrates for surface-enhanced Raman spectroscopy, in which they lead to good enhancements. Lithographic applications of this method of ion deposition were also investigated.

Angew. Chem. Int. Ed. 2014, 53, No. 46, 12528-12531

Marie-Alexandra Neouze, Martin Kronstein, Marco Litschauer, Michael Puchberger, Cristina Coelho, Christian Bonhomme, Christel Gervais, Frederik Tielens
Exploring the Molecular Structure of Imidazolium–Silica-Based Nanoparticle Networks by Combining Solid-State NMR Spectroscopy and First-Principles Calculations [Full Paper]

Exploring the Molecular Structure of Imidazolium–Silica-Based Nanoparticle Networks by Combining Solid-State NMR Spectroscopy and First-Principles Calculations

Sourcing luminescence: Imidazolium–silica-based nanoparticle networks (INNs) have been synthesized and characterized (see picture). A molecular model for the imidazolium–silica network is presented and described. The presence of water near the silica surface and its influence on the position of the counteranions in the INN has been shown.

Chem. Eur. J. 2014, 20, No. 46, 15188-15196

Heterogeneous Catalysis of CO2 Conversion to Methanol on Copper Surfaces

Combined experimental and theoretical approaches resulted in a better understanding of the hydrogenation of CO2 to methanol on copper-based catalysts. These results highlight the important role of the reducible oxide promoter for CO2 activation.

Angew. Chem. Int. Ed. 2014, 53, No. 45, 12022-12024

Bipolar Tribocharging Signal During Friction Force Fluctuations at Metal–Insulator Interfaces

Friction force fluctuation and tribocurrent generation at metal–insulator interfaces show a strong correlation during sliding contacts. The reported results suggest that these two phenomena have a common origin that must be associated with the occurrence of strong electrostatic interactions at the interface.

Angew. Chem. Int. Ed. 2014, 53, No. 45, 12101-12105

Direct Photocatalysis for Organic Synthesis by Using Plasmonic-Metal Nanoparticles Irradiated with Visible Light

Making changes with visible light: Recent developments in the direct photocatalysis of plasmonic-metal nanoparticles are described, with a focus on the role of the localized surface plasmon resonance (LSPR) effect in plasmonic metals and their applications in organic transformations (see figure). The role of light irradiation in the catalyzed reactions and the light-excited energetic electron reaction mechanisms will be highlighted.

Chem. Asian J. 2014, 9, No. 11, 3046-3064

Converting Ag2S-CdS and Ag2S-ZnS into Ag-CdS and Ag-ZnS Nanoheterostructures by Selective Extraction of Sulfur

Pick and choose: A three-step strategy for synthesizing Ag-MS (M=Zn, Cd) nanoheterostructures by following a solution–liquid–solid (SLS; see figure) mechanism with Ag2S nanoparticles as catalysts, followed by conversion of Ag2S sections of the heterostructures into silver nanoparticles by selective extraction of sulfur, is reported.

Chem. Asian J. 2014, 9, No. 11, 3287-3290

Frederik H. Kriel, Rossen Sedev, Craig Priest
Capillary Filling of Nanoscale Channels and Surface Structure [Review]

Sha Xiong, Lip Ket Chin, T. Tandiono, Ai-Qun Liu, Claus-Dieter Ohl
Microjet-Initiated Nano-Gaseous Layer Pinch-Off from the Surface of a Bubble and Subsequent Breakup [Full Paper]

Andrea Basagni, Luciano Colazzo, Francesco Sedona, Marco DiMarino, Tommaso Carofiglio, Elisa Lubian, Daniel Forrer, Andrea Vittadini, Maurizio Casarin, Alberto Verdini, Albano Cossaro, Luca Floreano, Mauro Sambi
Stereoselective Photopolymerization of Tetraphenylporphyrin Derivatives on Ag(110) at the Sub-Monolayer Level [Full Paper]

Stereoselective Photopolymerization of Tetraphenylporphyrin Derivatives on Ag(110) at the Sub-Monolayer Level

Sub-monolayer photochemistry: A Tetraphenylporphyrin derivative carrying para-amino-phenyl functional groups is used to obtain extended and highly ordered molecular wires on Ag(110) through a photochemical approach. A low-to-high density approach is used in order to not sterically prevent the conformational adaptation of the molecules during the reaction (see figure).

Chem. Eur. J. 2014, 20, No. 44, 14296-14304

Qiang Wei, Katharina Achazi, Hendrik Liebe, Andrea Schulz, Paul-Ludwig Michael Noeske, Ingo Grunwald, Rainer Haag
Mussel-Inspired Dendritic Polymers as Universal Multifunctional Coatings [Communication]

Mussel-Inspired Dendritic Polymers as Universal Multifunctional Coatings

Rapid and universal coatings were developed from mussel-inspired dendritic polyglycerol that mimics mussel foot proteins with regard to functional groups, molecular weight, and molecular structure. Multiple further modifications can be achieved by either pre- or post-functionalization and control of surface roughness.

Angew. Chem. Int. Ed. 2014, 53, No. 43, 11650-11655

Uncovering the Stoichiometry of Pyrococcus furiosus RNase P, a Multi-Subunit Catalytic Ribonucleoprotein Complex, by Surface-Induced Dissociation and Ion Mobility Mass Spectrometry

The subunit stoichiometry of archaeal RNase P, a multi-subunit ribonucleoprotein complex, was determined by surface-induced dissociation coupled with ion mobility mass spectrometry. Native MS studies with the proteins showed RPP21·RPP29 and (POP5·RPP30)2 complexes, but indicated a 1:1 composition for all subunits when either one or both protein complexes bind the cognate RNA.

Angew. Chem. Int. Ed. 2014, 53, No. 43, 11483-11487

Meng Li, Grace E. M. Lewis, Tony D. James, Yi-Tao Long, Barbara Kasprzyk-Hordern, John M. Mitchels, Frank Marken
Oil|Water Interfacial Phosphate Transfer Facilitated by Boronic Acid: Observation of Unusually Fast Oil|Water Lateral Charge Transport [Article]

Oil|Water Interfacial Phosphate Transfer Facilitated by Boronic Acid: Observation of Unusually Fast Oil|Water Lateral Charge Transport

It makes sense: Anion transfer for highly hydrophilic phosphate and hydroxide anions into a water-immiscible organic phase is driven with a manganese(II/III) redox system and facilitated with a hydrophobic oil-based boronic acid. It is shown that phosphate transfer is facilitated by boronic acid. Improved boronic acid facilitators and nanotrench electrodes are discussed in terms of future feasibility for phosphate sensing applications.

ChemElectroChem 2014, 1, No. 10, 1640-1646

Stimuli-Responsive Supramolecular Interfaces for Controllable Bioelectrocatalysis

Controllable bioelectrocatalysis: The reversible activation of bioelectrocatalysis by external stimuli at stimuli-responsive supramolecular interfaces integrated with redox enzymes has been established, allowing potential applications in controllable biofuel cells, biosensors, bioelectronic devices, and for energy transduction and information storage. This Minireview outlines the current knowledge and important trends in this area.

ChemElectroChem 2014, 1, No. 10, 1602-1612

Chao Hu, Xuan Zhang, Xinshi Li, Yan Yan, Guangcheng Xi, Haifeng Yang, Hua Bai
Au Photosensitized TiO2 Ultrathin Nanosheets with {001} Exposed Facets [Communication]

Au Photosensitized TiO2 Ultrathin Nanosheets with {001} Exposed Facets

Self-reduction: A general route for the direct growth of metal particles on TiO2 nanosheets with (001) exposed facets by an oxygen-vacancy-driven self-redox reaction is reported. Because there is no need for thermal treatment to remove stabilizing agents, the structure of the nanoparticles can also be retained, preserving the active sites associated with the high activity (see scheme).

Chem. Eur. J. 2014, 20, No. 42, 13557-13560

Sungju Yu, Yong Hwa Kim, Su Young Lee, Hyeon Don Song, Jongheop Yi
Hot-Electron-Transfer Enhancement for the Efficient Energy Conversion of Visible Light [Communication]

Hot-Electron-Transfer Enhancement for the Efficient Energy Conversion of Visible Light

A core–shell nanostructure with three distinct components enables the efficient production of H2 from water and significant electron harvesting under visible-light irradiation because of enhanced hot-electron injection, the formation of a Schottky junction, and high-performance electron filtering. The electron transfer pathway is elucidated through steady-state and time-resolved photoluminescence spectroscopy.

Angew. Chem. Int. Ed. 2014, 53, No. 42, 11203-11207

The Major Influences of Substituent Size and Position of 3,4-Propylenedioxythiophene on the Formation of Highly Hydrophobic Nanofibers

Choosing a position: The controlled formation of hydrophobic fibers by careful choice of the position of the hydrophobic substituent has been achieved. The 3-position of 3,4-propylenedioxythiophene is the best to preserve the presence of nanofibers when a voluminous substituent is introduced, owing to longer polymer chains and higher hydrophobicity (see figure).

ChemPlusChem 2014, 79, No. 10, 1434-1439

Regulating the Interactions of Adsorbates on Surfaces by Scanning Tunneling Microscopy Manipulation

Tunnel vision: Recent progress in applying scanning tunneling microscopy (STM) manipulations to regulate the inter-adsorbate and adsorbate–substrate interactions on solid surfaces is reviewed (see figure). This technique has demonstrated a versatile and general method to not only differentiate intermolecular interactions but also construct molecular nanostructures by regulating the adsorbate interactions.

ChemPhysChem 2014, 15, No. 13, 2657-2663

Verónica Montes-García, Jorge Pérez-Juste, Isabel Pastoriza-Santos, Luis M. Liz-Marzán
Metal Nanoparticles and Supramolecular Macrocycles: A Tale of Synergy [Minireview]

Metal Nanoparticles and Supramolecular Macrocycles: A Tale of Synergy

Nanoparticles and macrocycles: Recent literature regarding the combination of supramolecular macrocycles and metal nanoparticles is reviewed, with particular emphasis on the synthesis, surface modification and assembly, as well as the potential applications of the obtained nanocomposites (SERS = surface-enhanced Raman spectroscopy).

Chem. Eur. J. 2014, 20, No. 35, 10874-10883

Carbon Monoxide-Induced Dynamic Metal-Surface Nanostructuring

Nanoparticles and reactive surfaces: This Minireview provides an overview of selected CO-induced nanostructuring (see scheme). Recent examples of metal-surface and nanoparticle restructuring as a consequence of exposure to CO are discussed and show that nanoscale structures can be obtained under fairly mild conditions. Several cases of mono- and bimetallic compounds are described that show a range of behaviours in relation with the metal–CO interaction strength.

Chem. Eur. J. 2014, 20, No. 34, 10616-10625

Davide Vione, Marco Minella, Valter Maurino, Claudio Minero
Indirect Photochemistry in Sunlit Surface Waters: Photoinduced Production of Reactive Transient Species [Review]

Indirect Photochemistry in Sunlit Surface Waters: Photoinduced Production of Reactive Transient Species

Shine a light on your chemistry! This paper gives an overview of the reactive transient species that are produced in surface waters by sunlight irradiation of photoactive molecules (photosensitizers), such as nitrate, nitrite, and chromophoric dissolved organic matter (CDOM) (see scheme). The main transient species (.OH, CO3−., 1O2, and CDOM triplet states) are involved in the indirect phototransformation of a very wide range of organic pollutants in surface waters.

Chem. Eur. J. 2014, 20, No. 34, 10590-10606

Rutger A. van Santen
Catalytic Paradigms: A Riddle and a Puzzle [Essay]

Control of Solid Catalysts Down to the Atomic Scale: Where is the Limit?

Down to the last detail: Nanostructured solid catalysts were already known in the early 20th century, but their exact structure was unclear. Nowadays, the arrangement of atoms and particles in solids can be manipulated and analyzed down to the atomic scale (see image). The use of specific highly active catalysts enables industrially relevant reactions to be performed at room temperature.

Angew. Chem. Int. Ed. 2014, 53, No. 33, 8599-8604

Breakthroughs in Hard X-ray Diffraction: Towards a Multiscale Science Approach in Heterogeneous Catalysis

Diffraction at hard work: Modern heterogeneous catalysis would benefit from a multiscale science approach bridging the molecular world with the macroscopic world. Because of recent breakthroughs in X-ray diffraction methods, including the surface X-ray diffraction of atomically flat model catalysts, X-ray diffraction tomography of catalyst bodies, and X-ray profiling of an active catalyst in a chemical reactor, such an approach is now within reach.

Angew. Chem. Int. Ed. 2014, 53, No. 33, 8556-8558

Recent Progress in Biointerfaces with Controlled Bacterial Adhesion by Using Chemical and Physical Methods

Stick or twist: Recent progress in biointerfaces based on smart-responsive molecules or surface topographies has led to efficient approaches for controlling the adhesive behavior of bacteria.

Chem. Asian J. 2014, 9, No. 08, 2004-2016

Christin Büchner, Leonid Lichtenstein, Xin Yu, J. Anibal Boscoboinik, Bing Yang, William E. Kaden, Markus Heyde, Shamil K. Shaikhutdinov, Radosław Włodarczyk, Marek Sierka, Joachim Sauer, Hans-Joachim Freund
Ultrathin Silica Films: The Atomic Structure of Two-Dimensional Crystals and Glasses [Minireview]

Ultrathin Silica Films: The Atomic Structure of Two-Dimensional Crystals and Glasses

Polishing up the crystal glasses: An overview of the preparation and characterization of ordered silica films on metal supports is reported. In particular, the specific case of a silica bilayer, which exists in a crystalline and a vitreous variety, is discussed and a model of the vitreous silica structure proposed by William Zachariasen in 1932 is verified. Beyond this, the possibility to prepare the crystalline and the glassy structure on the same support leads to the study of the crystal–glass phase transition in real space (see figure).

Chem. Eur. J. 2014, 20, No. 30, 9176-9183

Nicolas Dupré, Marine Cuisinier, Jean-Frederic Martin, Dominique Guyomard
Interphase Evolution at Two Promising Electrode Materials for Li-Ion Batteries: LiFePO4 and LiNi1/2Mn1/2O2 [Review]

Interphase Evolution at Two Promising Electrode Materials for Li-Ion Batteries: LiFePO4 and LiNi1/2Mn1/2O2

The importance of the chemical history of the electrode surface before electrochemical cycling as well as the correlation between interface phenomena, the formation/evolution of an interphase, and the electrochemical behavior of LiFePO4 and LiNi1/2Mn1/2O2 electrodes are investigated by magic-angle-spinning nuclear magnetic resonance, electron energy loss spectroscopy, and X-ray photoelectron spectroscopy. These techniques allow the study of interface aging and failure mechanisms.

ChemPhysChem 2014, 15, No. 10, 1922-1938

Sidharam P. Pujari, Luc Scheres, Antonius T. M. Marcelis, Han Zuilhof
Covalent Surface Modification of Oxide Surfaces [Review]

Covalent Surface Modification of Oxide Surfaces

Not just scratching the surface: Covalently attached monolayers on oxide surfaces are reviewed with an eye to improved robustness, increased functionalization, understanding structural details, and the resulting potential for applications. Such monolayers, provided they are robust enough, provide a way of improving the properties of the bulk oxide material.

Angew. Chem. Int. Ed. 2014, 53, No. 25, 6322-6356

Yanxi Zhang, Zhiyuan Zhao, Davide Fracasso, Ryan C. Chiechi
Bottom-Up Molecular Tunneling Junctions Formed by Self-Assembly [Review]

Surface-Enhanced Raman Spectroscopy: Concepts and Chemical Applications

Expanding vibrational spectroscopy: Since its first observation in 1973, surface-enhanced Raman scattering (SERS) has developed into a mature vibrational spectroscopic technique. The number of applications in chemistry as well as the material and life sciences is increasing rapidly. This Review summarizes the key concepts behind SERS and provides an overview of current applications in chemistry.

Angew. Chem. Int. Ed. 2014, 53, No. 19, 4756-4795

Patricio Ramirez, Javier Cervera, Mubarak Ali, Wolfgang Ensinger, Salvador Mafe
Logic Functions with Stimuli-Responsive Single Nanopores [Concept]

Logic Functions with Stimuli-Responsive Single Nanopores

Porefection: Electrochemical transducers based on single stimuli-responsive polymeric nanopores can support a complete set of logic functions. Thermal, chemical, electrical, and optical stimuli are the input signals required to externally tune the pore conductance (i.e. the logical output).

ChemElectroChem 2014, 1, No. 04, 698-705

Erik M. J. Johansson, Rebecka Lindblad, Hans Siegbahn, Anders Hagfeldt, Håkan Rensmo
Atomic and Electronic Structures of Interfaces in Dye-Sensitized, Nanostructured Solar Cells [Review]

Atomic and Electronic Structures of Interfaces in Dye-Sensitized, Nanostructured Solar Cells

Core of the matter: Key processes in nanostructured dye-sensitized solar cells (DSC) occur at material interfaces containing, for example, oxides, dye molecules, and hole conductors (see picture). The implementation of X-ray-based spectroscopic methods for atomic-level understanding of such properties is reviewed. Examples include energy matching, binding configurations, and molecular orbital composition.

ChemPhysChem 2014, 15, No. 06, 1006-1017

Steven E. F. Kleijn, Stanley C. S. Lai, Marc T. M. Koper, Patrick R. Unwin
Electrochemistry of Nanoparticles [Review]

Electrochemistry of Nanoparticles

Revealing electrochemistry: Key issues related to the electrochemistry of nanoparticles are being uncovered through innovative techniques capable of relating activity and structure, ultimately at the level of a single nanoparticle. Recent advances in experimental approaches are discussed and assessed, with particular emphasis on those that enhance the fundamental understanding of electrocatalysis and nanoscale electrochemistry.

Angew. Chem. Int. Ed. 2014, 53, No. 14, 3558-3586

Lu Han, Tetsu Ohsuna, Zheng Liu, Viveka Alfredsson, Tomas Kjellman, Shunsuke Asahina, Mitsuo Suga, Yanhang Ma, Peter Oleynikov, Keiichi Miyasaka, Alvaro Mayoral, Isabel Díaz, Yasuhiro Sakamoto, Sam M. Stevens, Michael W. Anderson, Changhong Xiao, Nobuhisa Fujita, Alfonso Garcia-Bennett, Kyung Byung Yoon, Shunai Che, Osamu Terasaki
Structures of Silica-Based Nanoporous Materials Revealed by Microscopy [Review]

Kota Shiba, Motohiro Tagaya, Sadaki Samitsu, Satoshi Motozuka
Effective Surface Functionalization of Carbon Fibers for Fiber/Polymer Composites with Tailor-Made Interfaces [Minireview]

Effective Surface Functionalization of Carbon Fibers for Fiber/Polymer Composites with Tailor-Made Interfaces

High in fiber: Carbon fibers (CFs), which are widely utilized in fields ranging from fundamental research to industry, can be functionalized by both thin-layer coating and nanoparticle immobilization (see scheme). In this Minireview, these techniques and some practical applications of functionalized CFs, such as carbon fiber reinforced plastic (CFRP), are overviewed after briefly describing the basic properties of CFs.

ChemPlusChem 2014, 79, No. 02, 197-210

Towards Design Rules for Covalent Nanostructures on Metal Surfaces

Rational design at the nanoscale: Covalent assembly of molecular building blocks is a promising strategy to obtain functional nanostructures in one and two dimensions. This Concept article discusses how computational modeling could be used to obtain design rules that will advance this field towards the predictive design of specific functionalities on specific surfaces (see figure).

Chem. Eur. J. 2014, 20, No. 04, 928-934

Tailoring Cellulose Surfaces by Controlled Polymerization Methods

To expand the utilization of cellulose beyond its traditional uses, it is necessary to modify the surface of the fibers. This paper summarizes the modification of cellulose by controlled polymerization methods such as ATRP, RAFT, ROP, and ROMP. The combination of the excellent properties of cellulose with functional polymers creates new materials of great potential in advanced material applications.

Macromol. Chem. Phys. 2013, 214, No. 14, 1539-1544

Jose Luis Yagüe, Anna Maria Coclite, Christy Petruczok, Karen K. Gleason
Chemical Vapor Deposition for Solvent-Free Polymerization at Surfaces [Talents & Trends]

Xiaoli Liu, Yajun Xu, Zhaoqiang Wu, Hong Chen
Poly(N-vinylpyrrolidone)-Modified Surfaces for Biomedical Applications [Review]

Poly(N-vinylpyrrolidone)-Modified Surfaces for Biomedical Applications

In this review, a brief introduction to surface modification using poly(N-vinylpyrrolidone) and its copolymers and their potential biomedical applications is presented. Some perspectives on future research in the areas are also discussed.

Macromol. Biosci. 2013, 13, No. 02, 147-154

© Wiley-VCH 2013.