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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

Eva-Corinna Fritz, Corinna Nimphius, Albrecht Goez, Sebastian Würtz, Martin Peterlechner, Johannes Neugebauer, Frank Glorius, Bart Jan Ravoo
Sequential Surface Modification of Au Nanoparticles: From Surface-Bound AgI Complexes to Ag0 Doping [Communication]

Sequential Surface Modification of Au Nanoparticles: From Surface-Bound AgI Complexes to Ag0 Doping

Gold nanoparticles: A multifunctional bioxazoline-based ligand enables a sequential surface modification of Au nanoparticles from AgI coordination to Ag0 doping. The ligand is designed to coordinate AgI in close distance to the Au surface. Ag0 doping was achieved by simple ligand-exchange reaction without an additional reducing agent (see scheme).

Chem. Eur. J., February 4, 2015, DOI: 10.1002/chem.201406396

Yuekang Jin, Guanghui Sun, Feng Xiong, Liangbing Ding, Weixin Huang
Hydrogen Spillover Enhanced Hydroxyl Formation and Catalytic Activity Toward CO oxidation at the Metal/Oxide Interface [Communication]

Hydrogen Spillover Enhanced Hydroxyl Formation and Catalytic Activity Toward CO oxidation at the Metal/Oxide Interface

Mopping up spilled hydrogen: H(a) adatoms on the Pt surface formed by H2 dissociation can spillover to the Pt/FeO interface to enhance the hydroxyl coverage at the Pt/FeO interface and subsequent CO2 production by interfacial CO oxidation with hydroxyl groups (see figure). Hydroxyl groups and coadsorbed water on the catalyst surface play a crucial role in the occurrence of hydrogen spillover.

Chem. Eur. J., February 3, 2015, DOI: 10.1002/chem.201406644

Tomislav Suhina, Bart Weber, Chantal E. Carpentier, Kinga Lorincz, Peter Schall, Daniel Bonn, Albert M. Brouwer
Fluorescence Microscopy Visualization of Contacts Between Objects [Communication]

Fluorescence Microscopy Visualization of Contacts Between Objects

All the fun of the surface: By using rigidochromic fluorescent probe molecules attached to a surface, the contact area between the surface and an object can be visualized. Confinement of the molecules suppresses nonradiative decay and turns on the fluorescence.

Angew. Chem. Int. Ed., January 28, 2015, DOI: 10.1002/anie.201410240

Bioinspired Super-Wettability from Fundamental Research to Practical Applications

Wet, wet, wet: Surfaces with super-wettability, including three-dimensional, two-dimensional, and one-dimensional materials surfaces can be prepared. By combining different super-wettability properties, novel functional solid/liquid interfacial systems can be generated and integrated into devices for tackling many different problems.

Angew. Chem. Int. Ed., January 22, 2015, DOI: 10.1002/anie.201409911

Shanshan Chen, Shuai Shen, Guiji Liu, Yu Qi, Fuxiang Zhang, Can Li
Interface Engineering of CoOx/Ta3N5 Photocatalyst for Unprecedented Water Oxidation Performance under Visible Light Irradiation [Communication]

Interface Engineering of CoOx/Ta3N5 Photocatalyst for Unprecedented Water Oxidation Performance under Visible Light Irradiation

Hydrophilic interface modification of a CoOx-modified Ta3N5 photocatalyst with a magnesia nanolayer significantly improves its water oxidation efficiency under visible light irradiation. The essential roles of the interface modification are proposed to enhance the interfacial coverage of the CoOx/Ta3N5 photocatalyst and to decrease the defect density of Ta3N5 semiconductor. AQE=apparent quantum efficiency.

Angew. Chem. Int. Ed., January 21, 2015, DOI: 10.1002/anie.201409906

Francesca Ciccullo, Sabine-Antonia Savu, Andrea Gerbi, Maximilian Bauer, Ruslan Ovsyannikov, Antonio Cassinese, Thomas Chassé, Maria Benedetta Casu
Chemisorption, Morphology, and Structure of a n-Type Perylene Diimide Derivative at the Interface with Gold: Influence on Devices from Thin Films to Single Molecules [Full Paper]

Chemisorption, Morphology, and Structure of a n-Type Perylene Diimide Derivative at the Interface with Gold: Influence on Devices from Thin Films to Single Molecules

Elucidation and clarification: The results presented elucidate and clarify the mechanisms occurring at the PDI-8CN2/gold interface: They strongly impact field effect devices. Clarification was achieved as to why the use of substrate/contact treatments, decoupling PDI-8CN2 molecules from the substrate/contacts, is beneficial for devices.

Chem. Eur. J., January 21, 2015, DOI: 10.1002/chem.201404901

Claudia Backes, Nina C. Berner, Xin Chen, Paul Lafargue, Pierre LaPlace, Mark Freeley, Georg S. Duesberg, Jonathan N. Coleman, Aidan R. McDonald
Functionalization of Liquid-Exfoliated Two-Dimensional 2H-MoS2 [Communication]

Functionalization of Liquid-Exfoliated Two-Dimensional 2H-MoS2

Surface modification: Functionalization of liquid-exfoliated, defect-free, layered 2H-MoS2 was achieved through coordination of metal carboxylate salts by basal-plane sulfur atoms. The surface-coordinated metal center acts as an anchor for ligating organic functionalities. X-ray photoelectron spectroscopy (XPS) provides strong evidence for the coordination of MoS2 surface sulfur atoms to the M(OAc)2 salt (see picture).

Angew. Chem. Int. Ed., January 21, 2015, DOI: 10.1002/anie.201409412

Shengliang Hu, Adrian Trinchi, Paul Atkin, Ivan Cole
Tunable Photoluminescence Across the Entire Visible Spectrum from Carbon Dots Excited by White Light [Communication]

Tunable Photoluminescence Across the Entire Visible Spectrum from Carbon Dots Excited by White Light

Color tuning: Carbon dots whose peak fluorescence emission wavelengths are tunable across the entire visible spectrum from 400 to 710 nm are synthesized by simple adjustment of reagents and synthesis conditions. They exhibit multicolor emission upon excitation with white light.

Angew. Chem. Int. Ed., January 14, 2015, DOI: 10.1002/anie.201411004

Bilel Hamzaoui, Mohamad El Eter, Edy Abou-hamad, Yin Chen, Jérémie D. A. Pelletier, Jean-Marie Basset
Well-Defined Single-Site Monohydride Silica-Supported Zirconium from Azazirconacyclopropane [Full Paper]

Well-Defined Single-Site Monohydride Silica-Supported Zirconium from Azazirconacyclopropane

SiO2-supported Zr catalyst: The synthesis of the silica-supported azazirconacyclopropane 1 is reported. The application of this compound as well as of its hydrogenated counterpart 2 (see scheme) as catalyst for the hydrogenation of olefins has also been investigated, showing that compound 2 is an efficient catalyst for the conversion of short-chain olefins.

Chem. Eur. J., January 13, 2015, DOI: 10.1002/chem.201405788

Farah Benyettou, Katia Nchimi-Nono, Mustapha Jouiad, Yoann Lalatonne, Irena Milosevic, Laurence Motte, John-Carl Olsen, Na'il Saleh, Ali Trabolsi
Viologen-Templated Arrays of Cucurbit[7]uril-Modified Iron-Oxide Nanoparticles [Full Paper]

Viologen-Templated Arrays of Cucurbit[7]uril-Modified Iron-Oxide Nanoparticles

Bridge over nanoparticles: Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) are constructed by threading a viologen-based ditopic ligand, DPV2+, into the cavity of cucurbituril (CB[7]) macrocycles adsorbed on the surface of the NPs (see figure). The resulting viologen-crosslinked iron-oxide nanoparticles exhibit increased porosity, saturation magnetization, and emission properties.

Chem. Eur. J., January 12, 2015, DOI: 10.1002/chem.201405774

A Simple Quantitative Method to Study Protein–Lipopolysaccharide Interactions by Using Liquid Crystals

Pushing boundaries: A new method for quantitative and multiplexed measurements of endotoxin–protein binding events using liquid crystals is described.

ChemPhysChem, January 8, 2015, DOI: 10.1002/cphc.201402739

Dong Liu, Leilei Li, Yang Gao, Chengming Wang, Jun Jiang, Yujie Xiong
The Nature of Photocatalytic “Water Splitting” on Silicon Nanowires [Communication]

The Nature of Photocatalytic “Water Splitting” on Silicon Nanowires

The production of hydrogen gas by photocatalytic water splitting on silicon nanowires was investigated. It occurs through cleavage of Si-H bonds and formation of Si-OH bonds; the surface dangling bonds have a great impact on charge separation.

Angew. Chem. Int. Ed., January 7, 2015, DOI: 10.1002/anie.201411200

Silver-Assisted Chemical Etching on Silicon with Polyvinylpyrrolidone-Mediated Formation of Silver Dendrites

The metal-assisted chemical etching (MaCE) of Si is systematically investigated. The morphology and crystallographic nature of silver dendrites grown by this method can be significantly modulated by the addition of polyvinylpyrrolidone (PVP).

ChemPhysChem, December 17, 2014, DOI: 10.1002/cphc.201402634

E. M. van Schrojenstein Lantman, P. de Peinder, A. J. G. Mank, B. M. Weckhuysen
Separation of Time-Resolved Phenomena in Surface-Enhanced Raman Scattering of the Photocatalytic Reduction of p-Nitrothiophenol [Article]

Separation of Time-Resolved Phenomena in Surface-Enhanced Raman Scattering of the Photocatalytic Reduction of p-Nitrothiophenol

Taking it apart: Chemometrics are used in a two-step process to evaluate time-dependent surface-enhanced Raman spectra, allowing the analysis of reaction kinetics and the identification of short-term spectral variations (see picture).

ChemPhysChem, December 11, 2014, DOI: 10.1002/cphc.201402709

Daewha Hong, KiEun Bae, Duckshin Park, Houngkyung Kim, Seok-Pyo Hong, Mi-Hee Kim, Bong Soo Lee, Sangwon Ko, Seokwoo Jeon, Xu Zheng, Wan Soo Yun, Yang-Gyun Kim, Insung S. Choi, Jungkyu K. Lee
Direct Patterning and Biofunctionalization of a Large-Area Pristine Graphene Sheet [Communication]

Direct Patterning and Biofunctionalization of a Large-Area Pristine Graphene Sheet

A direct result: A novel strategy is demonstrated for the direct, spatioselective immobilization of proteins and cells on pristine single-layered graphene sheets through direct photografting and surface-initiated atom transfer radical polymerization of oligo(ethylene glycol) methacrylate.

Chem. Asian J., December 8, 2014, DOI: 10.1002/asia.201403219

Oil/Water Separation with Selective Superantiwetting/Superwetting Surface Materials

Stringent segregation: Superhydrophobic/superoleophilic surfaces and underwater superoleophobic surfaces have been successfully designed, fabricated, and employed in the separation of oil/water-free mixtures and emulsions on the basis of their selective superantiwetting/superwetting properties towards water and oil. Progress, remaining problems, and future challenges in this field are discussed in this Review.

Angew. Chem. Int. Ed., November 25, 2014, DOI: 10.1002/anie.201405785

Ignaz M. D. Höhlein, Arzu Angı, Regina Sinelnikov, Jonathan G. C. Veinot, Bernhard Rieger
Functionalization of Hydride-Terminated Photoluminescent Silicon Nanocrystals with Organolithium Reagents [Communication]

Functionalization of Hydride-Terminated Photoluminescent Silicon Nanocrystals with Organolithium Reagents

Organometallic compounds: Hydride terminated silicon nanocrystals (SiNCs) were functionalized with organolithium reagents. The reaction proceeds at room temperature with short reaction times and gives colloidally stable dispersions. The procedure offers a straightforward way to SiNCs with mixed surface functionalities (see scheme).

Chem. Eur. J. 2015, 21, No. 07, 2755-2758

Meihua Lin, Jingjing Wang, Guobao Zhou, Jianbang Wang, Na Wu, Jianxin Lu, Jimin Gao, Xiaoqing Chen, Jiye Shi, Xiaolei Zuo, Chunhai Fan
Programmable Engineering of a Biosensing Interface with Tetrahedral DNA Nanostructures for Ultrasensitive DNA Detection [Communication]

Programmable Engineering of a Biosensing Interface with Tetrahedral DNA Nanostructures for Ultrasensitive DNA Detection

Self-assembled DNA nanostructures with precise sizes allowed a programmable “soft lithography” approach to engineer the interfaces of electrochemical DNA sensors. Using millimeter-sized gold electrodes modified with several types of tetrahedral DNA nanostructures of different sizes, it was shown that both the kinetics and thermodynamics of DNA hybridization were profoundly affected.

Angew. Chem. Int. Ed. 2015, 54, No. 07, 2151-2155

Guanbin Gao, Mingxi Zhang, Pei Lu, Guanlun Guo, Dong Wang, Taolei Sun
Chirality-Assisted Ring-Like Aggregation of Aβ(140) at Liquid–Solid Interfaces: A Stereoselective Two-Step Assembly Process [Communication]

Chirality-Assisted Ring-Like Aggregation of Aβ(1–40) at Liquid–Solid Interfaces: A Stereoselective Two-Step Assembly Process

Stereoselective surfaces: Molecular chirality on a surface induces ring-like aggregates of amyloid Aβ(1–40) on N-isobutyryl-L-cysteine (L-NIBC)-modified gold surface at low concentration, whereas D-NIBC results in rod-like aggregates. The different alignment modes of the β-hairpin are guided by surface chirality through stereoselective recognition enhanced by electrostatic interactions.

Angew. Chem. Int. Ed. 2015, 54, No. 07, 2245-2250

Marc Pera-Titus, Loïc Leclercq, Jean-Marc Clacens, Floryan De Campo, Véronique Nardello-Rataj
Pickering Interfacial Catalysis for Biphasic Systems: From Emulsion Design to Green Reactions [Minireview]

Pickering Interfacial Catalysis for Biphasic Systems: From Emulsion Design to Green Reactions

What a pick! Pickering emulsions are surfactant-free dispersions of two immiscible fluids which are kinetically stabilized by colloidal particles. This review describes recent examples of hybrid and composite amphiphilic materials for the design of interfacial catalysts in Pickering emulsions for industrially relevant biphasic reactions in fine chemistry, biofuel upgrading, and depollution.

Angew. Chem. Int. Ed. 2015, 54, No. 07, 2006-2021

Wei Chang, Chunyan Sun, Xibin Pang, Hua Sheng, Yue Li, Hongwei Ji, Wenjing Song, Chuncheng Chen, Wanhong Ma, Jincai Zhao
Inverse Kinetic Solvent Isotope Effect in TiO2 Photocatalytic Dehalogenation of Non-adsorbable Aromatic Halides: A Proton-Induced Pathway [Communication]

Inverse Kinetic Solvent Isotope Effect in TiO2 Photocatalytic Dehalogenation of Non-adsorbable Aromatic Halides: A Proton-Induced Pathway

A change up: Reported herein is an inverse kinetic solvent isotope effect (KSIE) for the reductive dehalogenation of decabromodiphenyl ethers (deca-BDEs). The transformation under TiO2 photocatalysis involves a proton adduct intermediate which accompanies a hybridization change from sp2 to sp3 for an aromatic carbon atom. The protonation event leads to adsorption of the aromatic halides onto TiO2 with a subsequent electron-transfer reaction to form dehalogenated products.

Angew. Chem. Int. Ed. 2015, 54, No. 07, 2052-2056

Yuanyuan Li, Xiao He, Jun-Jie Yin, Yuhui Ma, Peng Zhang, Jingyuan Li, Yayun Ding, Jing Zhang, Yuliang Zhao, Zhifang Chai, Zhiyong Zhang
Acquired Superoxide-Scavenging Ability of Ceria Nanoparticles [Communication]

Acquired Superoxide-Scavenging Ability of Ceria Nanoparticles

Shaping up: Ceria nanoparticles (nanoceria) with negligible superoxide dismutase mimetic activity have been identified, and they exert antioxidant effects that are much stronger than expected in human bronchial epithelial cells. The underlying mechanism provides a strategy by which nanoceria of custom size, shape, and surface chemistry can acquire remarkable superoxide-scavenging abilities.

Angew. Chem. Int. Ed. 2015, 54, No. 06, 1832-1835

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 2015, 16, No. 02, 470-475

The Addition of Nitriles to Tetramesityldisilene: A Comparison of the Reactivity between Surface and Molecular Disilenes

A tale of two disilenes: The addition of acetonitrile to tetramesityldisilene was examined in order to compare the structures of the molecular adducts with the structures of the acetonitrile adducts formed on the Si(100)-2×1 surface and to provide further insight into the surface chemistry. The reactivity of propionitrile and phenylacetonitrile towards this disilene was also studied to investigate reactivity trends (see scheme).

Chem. Eur. J. 2015, 21, No. 06, 2480-2488

Migle Graužinyte, Joe Forth, Katherine A. Rumble, Paul S. Clegg
Particle-Stabilized Water Droplets that Sprout Millimeter-Scale Tubes [Communication]

Particle-Stabilized Water Droplets that Sprout Millimeter-Scale Tubes

Sprouting droplets: With increasing time, tubes are observed to sprout from water droplets with rigid membranes formed from colloidal particles trapped on the liquid–liquid interface. This is driven by an internal over-pressure which arises as a result of a minority constituent on the outside of the droplet that preferentially partitions into the water inside the membrane.

Angew. Chem. Int. Ed. 2015, 54, No. 05, 1456-1460

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. 2015, 21, No. 04, 1652-1659

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. 2015, 54, No. 04, 1144-1148

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 2015, 2, No. 01, 143-149

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 2015, 2, No. 01, 22-36

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. 2015, 54, No. 03, 974-978

Catalytic Activation of a Solid Oxide in Electronic Contact With Gold Nanoparticles

Nanoscale gold particles, which are commonly used for the activation of small molecules, have been found to catalytically activate an extended solid oxide. The oxide thus becomes more reactive for solid-state transformations and reactive adsorption processes of relevance in pollutant removal and hydrocarbon processing.

Angew. Chem. Int. Ed. 2015, 54, No. 03, 992-997

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

Deciphering Ligands’ Interaction with Cu and Cu2O Nanocrystal Surfaces 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. 2015, 21, No. 03, 1169-1178

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. 2015, 54, No. 03, 932-936

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. 2015, 21, No. 02, 770-777

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. 2014, 20, No. 52, 17292-17295

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 [Communication]

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

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

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

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

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]

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

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

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

© Wiley-VCH 2013.