Interfaces 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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Molecular dynamics simulations were applied to shed light on the growth mechanism of gold nanorods and to determine the role of surfactants and ions in this process. The symmetry of the nanoseeds is broken early on as the surfactant layer preferentially covers the (100) and (110) facets. This anisotropic surfactant layer promotes anisotropic growth, with the less protected tips growing faster.
Santosh Kumar Meena, Marialore Sulpizi
Angew. Chem. Int. Ed., August 25, 2016, DOI: 10.1002/anie.201604594. Read article
A facile and binder-free coating method, termed Langmuir–Blodgett–Scooping, is reported. The method takes advantage of Marangoni stresses and self-assembly to rapidly create functional coating films of various nanomaterials, with single-particle thickness resolution, at an air–water interface (left). Transfer of the film to a conventional separator yields membranes that enhance cathode material utilization in lithium–sulfur batteries (right).
Mun Sek Kim, Lin Ma, Snehashis Choudhury, Lynden A. Archer
Adv. Mater. Interfaces, August 25, 2016, DOI: 10.1002/admi.201600450. Read article
An improved variation of highly active/durable O2- evolving LaTiO2N powder-based photoelectrode has been fabricated by pre-cleaning the powder with mild polysulfonic acid and by homogeneous deposition of CoOx co-catalyst aided by microwave annealing. Fabricated into particle-transferred electrodes on Ti, the modified LaTiO2N serves as a highly active photoanode, achieving 8.9 mA cm−2 of the photocurrent density at 1.23 V versus RHE and longer active periods than those by previous methods.
Seiji Akiyama, Mamiko Nakabayashi, Naoya Shibata, Tsutomu Minegishi, Yusuke Asakura, Md. Abdulla-Al-Mamun, Takashi Hisatomi, Hiroshi Nishiyama, Masao Katayama, Taro Yamada, Kazunari Domen
Small, August 24, 2016, DOI: 10.1002/smll.201601929. Read article
Bright idea: Plasmonic MoO3−x nanoparticles were fabricated at room temperature without the use of reductants. The obtained MoO3−x exhibited enhanced visible-light catalytic activity toward hydrogen generation from ammonia borane (see figure).
Jiayuan Shi, Yasutaka Kuwahara, Meicheng Wen, Miriam Navlani-García, Kohsuke Mori, Taicheng An, Hiromi Yamashita
Chem. Asian J., August 24, 2016, DOI: 10.1002/asia.201600771. Read article
A new plasmonic active array, the so-called TopUp substrate, is introduced. It is prepared using a smart combination of a bottom-up process and a top-down prepared template structure. The desert-rose-like structures on gold templates are characterized and the application as a plasmonic substrate in analytical science is introduced, using the advantage of a strong field enhancement under surface-enhanced Raman spectroscopy conditions.
Sophie Patze, Uwe Huebner, Karina Weber, Dana Cialla-May, Juergen Popp
Adv. Mater. Interfaces, August 24, 2016, DOI: 10.1002/admi.201600549. Read article
A facile bottom-up strategy to obtain micropattern able to undergo reversible, homogeneous, and tunable geometrical changes upon photocontrol with variable illuminations is demonstrated. A photoreversible and tunable adhesion and wettability is realized via the photoreversible growth and disappearance of micropattern, which will find wide applications in functional intelligent materials with properties that can be tuned on-demand without altering the material's intrinsic properties.
Honghao Hou, Xiaodong Ma, Hongjie Xu, Zixing Shi, Jie Yin, Xuesong Jiang
Adv. Mater. Interfaces, August 24, 2016, DOI: 10.1002/admi.201600528. Read article
Natrotantite is demonstrated as an effective modifier for TaON to enhance its photocatalytic performance. The charge carrier separation behavior in TaON in the presence of the modifier is also investigated.
Yansong Zhou, Gang Chen, Yue Liu, Fang He
Adv. Mater. Interfaces, August 24, 2016, DOI: 10.1002/admi.201600429. Read article
A successful method using partially hydrolyzed amphiphilic polyhedral oligomeric silsesquioxane-poly (methyl methacrylate) as a surfactant and matrix to obtain brightly emitting composites comprising of NaYF4:Yb,Er nanoparticles is demonstrated. The infrared (IR) emitting composite shows an improved thermal stability and mostly single particle dispersion for 10 vol% of solids which leads to lower scattering losses and brighter IR emissions.
Xinyu Zhao, Yang Sun, Chaobin He, Mei Chee Tan
Adv. Mater. Interfaces, August 24, 2016, DOI: 10.1002/admi.201600334. Read article
Plasmonic all-inorganic perovskite photodetectors are demonstrated to have both high performance and solution process virtues, evidenced by a 238% plasmonic enhancement factor and 106 on/off ratio.
Yuhui Dong, Yu Gu, Yousheng Zou, Jizhong Song, Leimeng Xu, Jianhai Li, Jie Xue, Xiaoming Li, Haibo Zeng
Small, August 23, 2016, DOI: 10.1002/smll.201602366. Read article
Morphological control synthesis of silver nanoparticles is implemented by DNA of different sequences. Silver nanoprisms (AgNPRs) could be synthesized by DNA composed of C or G bases, while DNA composed of A or T bases were able to control the synthesis of silver nanoflowers or silver nanodiscs, respectively.
Jiuxing Li, Zhi Zhu, Fang Liu, Bingqing Zhu, Yanli Ma, Jinmao Yan, Bingqian Lin, Guoliang Ke, Rudi Liu, Leiji Zhou, Song Tu, Chaoyong Yang
Small, August 23, 2016, DOI: 10.1002/smll.201601338. Read article
Superamphiphobic, magnetic, and elastic silicone sponges are prepared simply by sequential hydrolytic condensation of organosilanes in the presence of Fe3O4@SiO2 nanoparticles. The sponges feature excellent superamphiphobicity for water and various organic liquids of low surface tension, fast magnetic responsiveness, high compressibility (90%), and stretchability (35%) as well as high stability over a wide range of temperatures (−196–300 °C).
Lingxiao Li, Junping Zhang
Adv. Mater. Interfaces, August 23, 2016, DOI: 10.1002/admi.201600517. Read article
The mechanical properties of colloidal nanocrystal superlattices can be tailored through exposure to low-pressure plasma. The elastic modulus and hardness of the ligand-free 3.7 nm ZrO2 superlattice are found to be similar to bulk yttria-stabilized tetragonal polycrystals of the same relative density but without any doping.
Santosh Shaw, Julien L. Colaux, Jennifer L. Hay, Frank C. Peiris, Ludovico Cademartiri
Adv. Mater., August 23, 2016, DOI: 10.1002/adma.201601873. Read article
Moral support: Affinity capturing and enrichment of a His6-tagged membrane protein (β-secretase) is demonstrated while it remains embedded in a continuous lipid membrane.
Anders Gunnarsson, Lisa Simonsson Nyström, Sabina Burazerovic, Jenny Gunnarsson, Arjan Snijder, Stefan Geschwindner, Fredrik Höök
ChemistryOpen, August 22, 2016, DOI: 10.1002/open.201600070. Read article
The adsorption of six electron donor–acceptor organic molecules on various sizes of graphene nanoflakes containing two common defects, double-vacancy (5-8-5) and Stone–Wales (55-77), indicates that the direction of charge transfer (CT) between graphene nanoflakes and molecules depends on the type of donor–acceptor organic molecule and not on the defect type and the size of the nanoflakes.
Mehdi Shakourian-Fard, Zahra Jamshidi, Ganesh Kamath
ChemPhysChem, August 22, 2016, DOI: 10.1002/cphc.201600614. Read article
Dimerization for enhanced properties: By following the DLVO theory to carefully condition the local environment of a stable sol, nanoparticles can be made to aggregate into dimers in high yields. This focus review highlights recent progress in the synthesis and utilization of dimers formed through controlled aggregation.
Kyle D. Gilroy, Younan Xia
Chem. Asian J., August 22, 2016, DOI: 10.1002/asia.201600979. Read article
Atomic layer deposition technique is applied to integrate FePO4 onto a 3D carbon nanotube (CNT) structure to form a 3D electrode for lithium-ion and sodium-ion batteries. The 3D hierarchical CNTs@FePO4 architecture shows 16 and 33 times higher areal capacities in lithium-ion and sodium-ion batteries compared to FePO4 on a 2D stainless steel substrate.
Jian Liu, Biqiong Wang, Qian Sun, Ruying Li, Tsun-Kong Sham, Xueliang Sun
Adv. Mater. Interfaces, August 22, 2016, DOI: 10.1002/admi.201600468. Read article
Surface energy mimicking is introduced, enabling spontaneous replication of micropatterns (2D and 2.5D) of different surface energies, and enabled by self-assembly of functional mimicking monomers within a polymer matrix. Replication of surface energies ranging from hydrophilic to superhydrophobic is demonstrated, as well as self-assembly of picoliter-droplet arrays on replicated micropatterns consisting of hydrophilic patches in a hydrophobic surface.
Gaspard Pardon, Tommy Haraldsson, Wouter van der Wijngaart
Adv. Mater. Interfaces, August 22, 2016, DOI: 10.1002/admi.201600404. Read article
Liquid marbles are liquid-in-gas dispersed systems stabilized by solid particles adsorbed at the gas-liquid interface. The recent progress made in stimuli-responsive liquid marbles, whose structure, stability and movement can be controlled by external stimuli such as pH, temperature, light, magnetic and electric fields, ultrasonic, mechanical stress and organic solvents, is reviewed.
Syuji Fujii, Shin-ichi Yusa, Yoshinobu Nakamura
Adv. Funct. Mater., August 22, 2016, DOI: 10.1002/adfm.201603223. Read article
Liquid-infused coatings are of considerable technological importance as multifunctional hydrophobic materials. However, the roughness of the underlayer coating causes instability and inflexibility and limits the hydrophobicity or optical properties. Here, we report a liquid-infused smooth surface (R rms < 1 nm) that shows extraordinary hydrophobicity (contact angle hysteresis <0.75°), stable hydrophobicity and transparency properties, and a high level of robustness against bending or mechanical damage.
Mizuki Tenjimbayashi, Ryo Togasawa, Kengo Manabe, Takeshi Matsubayashi, Takeo Moriya, Masatsugu Komine, Seimei Shiratori
Adv. Funct. Mater., August 22, 2016, DOI: 10.1002/adfm.201602546. Read article
Ab initio molecular dynamics simulations are proposed to investigate the solvation effects at the interface between a platinum nanoparticle (Pt201) and liquid water at 350 K. The first solvation layer contains twice as much physisorbed water molecules above the terraces, than chemisorbed ones located only at edges and corners. The solvent stabilizes the binding energy of chemisorbates.
Rodrigo Ferreira de Morais, Torsten Kerber, Federico Calle-Vallejo, Philippe Sautet, David Loffreda
Small, August 17, 2016, DOI: 10.1002/smll.201601307. Read article
High-resolution atomic force microscopy with a functionalized CO tip allows us to observe inner structures of molecules. Here, a structural information of the organometallic bond formed on a Ag(111) surface is obtained at low temperature. The detailed behavior of the Ag atom to the molecular unit was in-depth investigated.
Shigeki Kawai, Ali Sadeghi, Toshihiro Okamoto, Chikahiko Mitsui, Rémy Pawlak, Tobias Meier, Jun Takeya, Stefan Goedecker, Ernst Meyer
Small, August 17, 2016, DOI: 10.1002/smll.201601216. Read article
The write stuff: A microchemical pen for writing microchemical reactions on macroscopic substrates is presented. The microchemical pen represents the first demonstration of a tool that can write patterns at the microreaction at diffusion layer on a substrate. Previously reported tools have focused on confining flow.
Sifeng Mao, Chiho Sato, Yuma Suzuki, Jianmin Yang, Hulie Zeng, Hizuru Nakajima, Ming Yang, Jin-Ming Lin, Katsumi Uchiyama
ChemPhysChem, August 17, 2016, DOI: 10.1002/cphc.201600857. Read article
High-thermal-conductivity films with condensate microdrop self-removal function can be in situ grown on the copper surface based on the controllable fabrication of densely packed single-crystal copper nanocones. The proposed template-free one-step electrodeposition technology based on the synergistic utilization of multiple chemical effects is very simple, and the as-synthesized copper nanocones can find a series of technological applications.
Hong Li, Jie Zhu, Yuting Luo, Fanfei Yu, Jianhui Fang, Xuefeng Gao
Adv. Mater. Interfaces, August 16, 2016, DOI: 10.1002/admi.201600362. Read article
Modern catalysis research is associated with a shift from largely empirical approaches towards the rational design of improved catalytic processes. An important contribution to this development is due to the rise of quantum chemical methods, which have enabled researchers to resolve reactions at the atomistic level and thus gain a deeper understanding of catalytic processes. This review will show selected examples of how quantum chemical studies have advanced our understanding of how organic molecules react over metal catalysts, which is of eminent importance for various industrial processes.
Lyudmila Moskaleva, Cheng-chau Chiu, Alexander Genest, Notker Rösch
The Chemical Record, August 15, 2016, DOI: 10.1002/tcr.201600048. Read article
Biased Surface! Surface segregation or incorporation of surface species induced the deactivation and recovery process, respectively, of a PrBaCo2O5+δ (PBCO) oxygen electrode under electrochemical potentials. The surface chemistry of the PBCO oxygen electrode is very sensitive to electrochemical bias, and thereby is closely related to the activity and stability of electrochemical devices during operation at high temperature.
Lin Zhu, Bo Wei, Zhihong Wang, Kongfa Chen, Haiwu Zhang, Yaohui Zhang, Xiqiang Huang, Zhe Lü
ChemSusChem, August 12, 2016, DOI: 10.1002/cssc.201600658. Read article
Layered double hydroxide aggregation: Mono-, multi-, and polyvalent anions adsorb on layered double hydroxide (LDH) platelets to different extents, leading to different charging and aggregation behavior in aqueous suspensions. Simple monovalent salts destabilize LDHs by charge screening, polyelectrolytes by charge neutralization, whereas multivalent ions destabilize them by both effects. Highly stable LDH particles can be obtained by surface modification with polymeric compounds.
Marko Pavlovic, Paul Rouster, Tamas Oncsik, Istvan Szilagyi
ChemPlusChem, August 12, 2016, DOI: 10.1002/cplu.201600295. Read article
The factors causing efficiency loss in solution processed organic light emitting diodes are investigated compared to evaporated counterparts. Probed by exciplex photoluminescence and energetic disorder, energy level shift/broadening at the interface is found to be the main reason that impairs hole carrier confinement and thus device efficiency. By using deep highest occupied molecular orbital electron transport layer, the efficiency difference can be effectively reduced.
Szuheng Ho, Ying Chen, Shuyi Liu, Cheng Peng, Dewei Zhao, Franky So
Adv. Mater. Interfaces, August 12, 2016, DOI: 10.1002/admi.201600320. Read article
The electrolyte effect! The adsorption of cations and anions from ionic liquids is decisive for the band level alignment in dye-sensitized solar cells. Electron deficiency typically caused by cations results in an energetic lowering of states, that is, valence and conduction bands. Consequently, electron donation from anions results in an energetic increase of states.
Henry Weber, Barbara Kirchner
ChemSusChem, August 11, 2016, DOI: 10.1002/cssc.201600844. Read article
Performance enhancing particles: Monodispersed carboxylic polystyrene (CPS)/Ag hybrid spheres with tunable size and coverage density of Ag nanoparticles exhibit a high enhancement factor, low limit of detection and good reproducibility for detection of 4-ABT.
Yougen Hu, Tao Zhao, Pengli Zhu, Yu Zhu, Xianwen Liang, Rong Sun, Ching-Ping Wong
Chem. Asian J., August 11, 2016, DOI: 10.1002/asia.201600821. Read article
The interface state of monolayer WTe2/Fe3O4(111) is sensitive to external physical fields. Applying mechanical strain or electric field can realize valley-state dominating, spin-polarized interface-state dominating, or valley-polarized conductivity of monolayer WTe2.
Yan Song, Wenbo Mi, Xiaocha Wang
Adv. Mater. Interfaces, August 11, 2016, DOI: 10.1002/admi.201600581. Read article
The O2 plasma pretreatment is essential for the secure integration of atomic layer deposited alumina (ALD Al2O3) on polycarbonate (PC) films. The carbonyl functional groups produced by plasma treatment enable strong chemical binding between the PC substrate and the alumina layer. Resulting plasma-treated PC-ALD Al2O3 exhibits a superior stability against acetone etching compared to the untreated case.
Suk Won Park, Kiho Bae, Jun Woo Kim, Gyeong Beom Lee, Byoung-Ho Choi, Min Hwan Lee, Joon Hyung Shim
Adv. Mater. Interfaces, August 11, 2016, DOI: 10.1002/admi.201600340. Read article
Organic macromolecules located within biocomposites, produced by organisms, strongly affect their physical properties. Even atomic structure of biogenic minerals slightly differs from that in geological counterparts, as the intra-crystalline organics is the source of substantial anisotropic lattice distortions. In this paper, we provide experimental evidences that these distortions are caused by strong atomic interactions at organic/inorganic interfaces. Obtained results shed additional light on complex biomineralization problem.
Adv. Mater. Interfaces, August 11, 2016, DOI: 10.1002/admi.201600189. Read article
3D stacking of plasmonic nanostructures is achieved using a solvent-assisted nanotransfer printing (S-nTP) technique to provide extremely dense and regular hot spot arrays for highly sensitive surface-enhanced Raman spectroscopy (SERS) analysis. Moreover, hybrid plasmonic nanostructures obtained by printing the nanowires on a continuous metal film or graphene surface show significantly intensified SERS signals due to vertical plasmonic coupling.
Jae Won Jeong, Md Masud Parvez Arnob, Kwang-Min Baek, Seung Yong Lee, Wei-Chuan Shih, Yeon Sik Jung
Adv. Mater., August 11, 2016, DOI: 10.1002/adma.201602603. Read article
A strategy which combines photolithography and visible light induced surface initiated graft crosslinking polymerization to fabricate well-defined hierarchical complex 3D patterns on polymer substrate is developed. This method does not involve tedious pre-treatment steps and has great potential applications in the preparation of polymer-based multicomponent biomolecule microarrays.
Changwen Zhao, Bin He, Guan Wang, Yuhong Ma, Wantai Yang
Macromol. Rapid Commun., August 09, 2016, DOI: 10.1002/marc.201600307. Read article
Active surfaces: The adsorption of hydrogen, hydroxide, water, and sodium to Pt(553) and Pt(533) is examined and cyclic voltammograms are simulated. The presence of water co-adsorbed on the step with hydroxide promotes hydroxide adsorption at low potentials, owing to strong hydrogen bonding. The co-adsorption of sodium weakens hydroxide adsorption at the step.
Ian T. McCrum, Michael J. Janik
ChemElectroChem, August 09, 2016, DOI: 10.1002/celc.201600293. Read article
Polyethylene nanocomposites based on functionalized ZnO nano/hierarchical particles with highly effective interfacial surface area are presented, for the next generation of ultralow transmission-loss high-voltage DC insulating materials.
Amir M. Pourrahimi, Tuan A. Hoang, Dongming Liu, Love K. H. Pallon, Stanislaw Gubanski, Richard T. Olsson, Ulf W. Gedde, Mikael S. Hedenqvist
Adv. Mater., August 09, 2016, DOI: 10.1002/adma.201603291. Read article
High quality interfaces in segmented nanowires are crucial for reliable practical applications. The CoPt/Ni and CoPt/Cu interfaces in electrodeposited CoPt/Ni and CoPt/Cu/Ni magnetic nanowires grown by template-assisted electrodeposition are studied in detail. While robust and smooth interfaces develop for CoPt/Ni, porous and cracked junctions are observed for CoPt/Cu due to severe lattice mismatch.
Jin Zhang, Salvador Pané, Jordi Sort, Eva Pellicer
Adv. Mater. Interfaces, August 08, 2016, DOI: 10.1002/admi.201600336. Read article
Triplet transfer across a surface-anchored metal–organic-framework heterojunction is demonstrated by the observation of triplet–triplet annihilation photon upconversion in a sensitizer–emitter heterostructure. Upconversion thresholds under 1 mW cm−2 are achieved. In the broader context, the double-electron-exchange mechanism of triplet transfer indicates that the heterojunction quality is sufficient for electrons to move between layers in this solution-processed crystalline heterostructure.
Michael Oldenburg, Andrey Turshatov, Dmitry Busko, Stephanie Wollgarten, Michael Adams, Nicolò Baroni, Alexander Welle, Engelbert Redel, Christof Wöll, Bryce S. Richards, Ian A. Howard
Adv. Mater., August 08, 2016, DOI: 10.1002/adma.201601718. Read article
Rejane M. P. Silva, Lucas C. Lima, Ivanise Gaubeur, Hugo B. Suffredini
Electroanalysis, August 05, 2016, DOI: 10.1002/elan.201600429. Read article
Magdalena Gebala, Fabio La Mantia, Pauline Eugene Michaels, Simone Ciampi, Bakul Gupta, Stephen G. Parker, Roya Tavallaie, J. Justin Gooding
Electroanalysis, August 05, 2016, DOI: 10.1002/elan.201600285. Read article
Manganese hex: The reversible reaction of surface manganese species on hexagonal SrMnO3 with O2 leads to the formation of manganese–superoxo species, which likely catalyze the selective oxidative transformation of various types of organic substrates into the desired oxygenated or dehydrogenated products.
Shuma Kawasaki, Keigo Kamata, Michikazu Hara
ChemCatChem, August 05, 2016, DOI: 10.1002/cctc.201600613. Read article
All about the support: Ordered mesoporous materials with comparable pore textures but different chemical properties are used as supports for Fe catalysts in the Fischer–Tropsch to olefins process under differential and industrially relevant conditions. The influence of the support on the catalytic properties is illuminated with this series of model catalysts.
Martin Oschatz, Wouter S. Lamme, Jingxiu Xie, A. Iulian Dugulan, Krijn P. de Jong
ChemCatChem, August 05, 2016, DOI: 10.1002/cctc.201600492. Read article
A universal and versatile approach is developed using noncovalent interactions as driving forces to build bioactive surfaces with desired biofunctions. A polyanion containing guest moieties is designed as a building block to form a polyelectrolyte multilayered film via electrostatic interactions by layer-by-layer assembly technique, and as a matrix to provide binding sites for incorporation of biofunctional host molecules via host–guest interactions.
Limin Cao, Yangcui Qu, Changming Hu, Ting Wei, Wenjun Zhan, Qian Yu, Hong Chen
Adv. Mater. Interfaces, August 05, 2016, DOI: 10.1002/admi.201600600. Read article
Specifically selected peptide–polymer conjugates, applied for inorganic–organic interface compatibilization, lead to stiffer and tougher materials. The concept is based on the sequence-specific interaction of a peptide with inorganic surfaces and utilizes the idea of interface management of natural materials such as bone and nacre where proteins mediate inorganic–organic interactions.
Valeria Samsoninkova, Britta Seidt, Felix Hanßke, Wolfgang Wagermaier, Hans G. Börner
Adv. Mater. Interfaces, August 05, 2016, DOI: 10.1002/admi.201600501. Read article
Alumina is deposited by atomic layer deposition on a heterojunction device to reduce recombination in a surface sensitive electrical measurement. As an example and for validation this study investigates baseline Cu(In,Ga)Se2 thin film solar cells and derives an estimate for the collection and optical loss in the quantum efficiency. The approach is extended to CdTe, and Kesterite absorbers.
Benjamin Bissig, Carlos Guerra-Nunez, Romain Carron, Shiro Nishiwaki, Fabio La Mattina, Fabian Pianezzi, Paolo A. Losio, Enrico Avancini, Patrick Reinhard, Stefan G. Haass, Martina Lingg, Thomas Feurer, Ivo Utke, Stephan Buecheler, Ayodhya N. Tiwari
Small, August 04, 2016, DOI: 10.1002/smll.201601575. Read article
Engineered material-based fibronectin interfaces support distinctive stem cell phenotypes. The material spontaneously induces fibronectin organization into nanonetworks, a biomimetic microenvironment, which maintains stemness under basal conditions and enhances cell differentiation upon external stimuli with defined media. Fibronectin nanonetworks are a versatile tool with potential use in fundamental stem cell research and regenerative medicine.
Patricia Rico, Hayk Mnatsakanyan, Matthew J. Dalby, Manuel Salmerón-Sánchez
Adv. Funct. Mater., August 04, 2016, DOI: 10.1002/adfm.201602333. Read article
A series of new ultrathin copolymer dielectrics (sub-23 nm) with different compositions is synthesized via initiated chemical vapor deposition to tune the threshold voltage (VT) of organic thin-film transistors (OTFTs). By combining the copolymer dielectrics with an interfacial layer, the VT of C60 OTFT can be independently controlled according to the copolymer composition without any degradation of device performance.
Kwanyong Pak, Hyejeong Seong, Junhwan Choi, Wan Sik Hwang, Sung Gap Im
Adv. Funct. Mater., August 03, 2016, DOI: 10.1002/adfm.201602585. Read article
Lewis acid based interaction between metal oxide host and polysulfide effectively confines polysulfides within metal oxide/sulfur cathodes. It is demonstrated that the overall electrochemical performance of lithium-sulfur batteries can be greatly improved by tuning the surface acidity of metal oxide through the heteroatom doping.
Xiwen Wang, Tao Gao, Xiulin Fan, Fudong Han, Yiqing Wu, Zhian Zhang, Jie Li, Chunsheng Wang
Adv. Funct. Mater., August 03, 2016, DOI: 10.1002/adfm.201602264. Read article
Periodic minimal interface: Attachment of iodine atoms onto the headgroup of an amphiphilic zwitterion leads to the formation of a bicontinuous cubic liquid-crystalline assembly with a primitive-type infinite periodic minimal surface. Halogen bonding between the iodine atoms and the anions plays an important role in controlling the interface curvature of the assembly.
Takahiro Ichikawa, Akiyoshi Okafuji, Takashi Kato, Hiroyuki Ohno
ChemistryOpen, August 02, 2016, DOI: 10.1002/open.201600054. Read article
Ground control: Molecules attached to surfaces control the dielectric properties of liquid–solid interfaces and modulate chemical processes in the same way solvents do. Quantitative relationships are established between nature/surface density of organic groups and interface polarities. Binding organic groups to pore surfaces produces low polarity interfaces where reactions requiring hydrophobic media can be performed in bulk water.
Dilini Singappuli-Arachchige, J. Sebastian Manzano, Lindy M. Sherman, Igor I. Slowing
ChemPhysChem, August 02, 2016, DOI: 10.1002/cphc.201600740. Read article
Mixed metal arts: Au-Cu alloys were synthesized at ambient temperature via the clustering of Au and Cu atoms simultaneously produced from the galvanic replacement reaction between HAuCl4 and Cu2O and the disproportionation reaction of Cu2O in an ethanol–water mixture solution. The supported AuCu alloy particles exhibit excellent activity in catalyzing the liquid phase aerobic oxidation reaction of benzyl alcohol.
Zhenhua Zhang, Tian Cao, Liangfeng Luo, Rui Song, Huijuan Wang, Weixin Huang
ChemNanoMat, August 02, 2016, DOI: 10.1002/cnma.201600211. Read article
Surface alterations: The lithium difluoro(bisoxalato)phosphate (LiDFBP)-derived solid electrolyte interphase (SEI) layer effectively suppresses unwanted electrolyte decomposition at high voltages and mitigates the voltage decay of lithium-rich cathodes caused by phase transformation to spinel-like phases during cycling (see figure). Lithium-rich cathodes with the LiDFBP additive exhibit substantially improved cycling performance and rate capability.
Jung-Gu Han, Inbok Park, Jiho Cha, Suhyeon Park, Sewon Park, Seungjun Myeong, Woograe Cho, Sung-Soo Kim, Sung You Hong, Jaephil Cho, Nam-Soon Choi
ChemElectroChem, August 02, 2016, DOI: 10.1002/celc.201600297. Read article
Competing Interests: The potential of polymer-based synthetic mimics of antimicrobial peptides (SMAMPs) as active ingredients in antimicrobial layer-by-layer architectures is investigated. These systems are studied by zeta potential measurements, surface plasmon resonance spectroscopy, and antimicrobial assays. The charges of the polycationic SMAMPs are needed both for layer stability and antimicrobial activity. Therefore, the assembly conditions need to be carefully adjusted.
Franziska Dorner, Alicia Malek-Luz, Julia S. Saar, Sebastian Bonaus, Ali Al-Ahmad, Karen Lienkamp
Macromol. Chem. Phys., August 01, 2016, DOI: 10.1002/macp.201600268. Read article
The formation of different conducting polymer platforms with azido groups and the study of the surface hydrophobicity and water adhesion by post-functionalization with aromatic groups are reported.
Guilhem Godeau, Jessica N'Na, Frédéric Guittard, Thierry Darmanin
Macromol. Chem. Phys., August 01, 2016, DOI: 10.1002/macp.201600196. Read article
Katherine W. Pulsipher, Ivan J. Dmochowski
Isr. J. Chem., July 29, 2016, DOI: 10.1002/ijch.201600017. Read article
Silicon-nanosheet-based nanocomposites are synthesized in a one-step reaction. The hybrid material exhibits the processing properties of the polymeric matrix and the optoelectronic properties of the silicon material. In addition, the polymer stabilizes the nanomaterial against external influences, providing an insight into the photodegradation processes of the silicon monolayers.
Tobias Helbich, Alina Lyuleeva, Theresa Ludwig, Lavinia M. Scherf, Thomas F. Fässler, Paolo Lugli, Bernhard Rieger
Adv. Funct. Mater., July 28, 2016, DOI: 10.1002/adfm.201602137. Read article
Heal thyself! Healable conductive superhydrophobic films are fabricated by depositing a conductive superhydrophobic layer containing Ag nanowires on a thermally healable polymer film. Under a low applied voltage or upon irradiation with low-power near infrared light, Ag nanowires in the superhydrophobic films act as heaters to enable repeated and rapid restoration of lost superhydrophobicity caused by cuts or scratches several hundreds of micrometers wide.
Mengchun Wu, Yang Li, Ni An, Junqi Sun
Adv. Funct. Mater., July 25, 2016, DOI: 10.1002/adfm.201601979. Read article
As prepared and reduced form of 5 wt % Pd on CeZrO4-δ exhibit 100 % conversion for typical Suzuki C−C coupling reaction in 2.5 and 1 h, respectively; whereas, 1 wt % Pd photodeposited on reduced CeZrO4-δ support shows 100 % conversion in 20 min. Mechanistic investigations suggests a strong metal-support interaction through charge transfer, especially through oxygen vacancy sites on support.
Anand S. Burange, Rakesh Shukla, Avesh Kumar Tyagi, Chinnakonda S. Gopinath
ChemistrySelect, July 22, 2016, DOI: 10.1002/slct.201600655. Read article
Investigation of the surface properties with relaxation and reconstruction are crucial for understanding covellite stability and chemical reactivity. Three different cleavage planes along (001) direction leading to the exposition of the sulfur and copper atoms were investigated under DFT/Plane Waves formalism. Five relaxed surfaces arising from the cleavage planes were studied.
Antonio L. Soares, Egon C. Dos Santos, Ángel Morales-García, Hélio A. Duarte, Heitor A. De Abreu
ChemistrySelect, July 22, 2016, DOI: 10.1002/slct.201600422. Read article
A new molecular spring formed by hydrophobic Cu2(tebpz) (tebpz=3,3',5,5'-tetraethyl-4,4'-bipyrazolate) Metal-Organic Framework (MOF) and water is presented. Proposed nanoporous heterogeneous lyophobic system (HLS) has exceptional properties compared to numerous reported systems of such type in terms of stability, efficiency and operational pressure. Mechanical and thermal energetic characteristics, as well as stability of the system are discussed and are in details compared with other HLSs presented in the literature.
Yaroslav Grosu, Mian Li, Yun-Lei Peng, Dong Luo, Dan Li, Abdessamad Faik, Jean-Marie Nedelec, Jean-Pierre Grolier
ChemPhysChem, July 21, 2016, DOI: 10.1002/cphc.201600567. Read article
A broadband photodetector based on a single Se microtube is demonstrated with responsivity of ≈19 mA W−1 at 610 nm and fast speed (rise time 0.32 ms and fall time 23.02 ms). The responsivity of this device is improved by Au nanoparticles via a simple sputtering method and (≈600% to ≈800%) responsivity enhancement is realized within broadband region (300–700 nm).
Kai Hu, Hongyu Chen, Mingming Jiang, Feng Teng, Lingxia Zheng, Xiaosheng Fang
Adv. Funct. Mater., July 21, 2016, DOI: 10.1002/adfm.201602408. Read article
In this study, the femtosecond pump-probe technique is used to measure electron transfer of the Au nanoantenna/MoS2 heterostructure, which is fabricated by the template-based sputtering method with low cost and simple procedures. The results demonstrate that plasmon-induced hot electron transfer takes place in the heterostructure in the order of 200 fs with an injected electron density of about 5.6 × 1012 cm−2.
Ying Yu, Ziheng Ji, Shuai Zu, Bowen Du, Yimin Kang, Ziwei Li, Zhangkai Zhou, Kebin Shi, Zheyu Fang
Adv. Funct. Mater., July 21, 2016, DOI: 10.1002/adfm.201601779. Read article
Influence of oxygen onto the stability of SrVO3 film: At high temperature, these self-organized nanostructures appear with an angle of 90° between the two variants in an oxidizing atmosphere. They have been identified as Sr3V2O8. A fine control of oxygen pressure and temperature prevent their formation in order to obtain smooth and good quality of SrVO3 thin films.
Bruno Bérini, Valérie Demange, Muriel Bouttemy, Elena Popova, Niels Keller, Yves Dumont, Arnaud Fouchet
Adv. Mater. Interfaces, July 20, 2016, DOI: 10.1002/admi.201600274. Read article
The network density of polymer-wrapped semiconducting carbon nanotube networks is controlled by self-assembled monolayers on Al/AlO x gate electrodes for field-effect transistor fabrication. Medium-dense networks on self-assembled monolayers with long alkyl chains and amine or hydroxyl end-groups give the best combination of high on-conductances, high hole mobilities (up to 20 cm2 V−1 s−1), low trap densities, and low contact resistance.
Stefan P. Schießl, Florentina Gannott, Sebastian H. Etschel, Manuel Schweiger, Saeideh Grünler, Marcus Halik, Jana Zaumseil
Adv. Mater. Interfaces, July 20, 2016, DOI: 10.1002/admi.201600215. Read article
Time and temperature evolution of the crystalline phase and different amorphous fractions (totally mobile, slightly constrained mobile, and rigid) of poly(L-lactic acid) are measured (i) during crystallization at different temperatures and (ii) upon the successive cooling step down to room temperature. The exact evolution of all the phases is thus assessed during the entire thermal history of the material.
Maria Cristina Righetti, Daniele Prevosto, Elpidio Tombari
Macromol. Chem. Phys., July 19, 2016, DOI: 10.1002/macp.201600210. Read article
Electron transfer (ET) reactions at a liquid/liquid (L/L) interface have attracted much attention because they are relevant to many important chemical and biological processes. Comparing with ion transfer (IT) reactions at a L/L interface, the ET is usually coupling with an IT and it is difficult to discriminate them. Despite of great progress has been made, the coupling nature is still misty and the two proposed mechanisms have been the subject of much argument over past several decades. In this work, the coupling reactions between ferrocene (Fc) in 1,2-dichloroethane (DCE) and Fe(CN)63- in water have been investigated in detail using various types of pipette electrodes, and the two mechanisms can be clarified with the help of salting out effects. We demonstrate that which mechanism dominating is dependent upon the concentration ratio of redox species in both phases.
Xin Zhang, Haomin Wang, Celeste Morris, Chaoyue Gu, Mingzhi Li, Lane Baker, Yuanhua Shao
ChemElectroChem, July 18, 2016, DOI: 10.1002/celc.201600234. Read article
Chain gang: On cooling, absorbed acetic acid crystallized and aggregated on the surface of Al2O3 in cluster chains, which slowed acetate formation by covering the surface active sites on Al2O3. Crystalline acetic acid reacted with Al2O3 itself.
Siqi Hou, Shengrui Tong, Ying Zhang, Fang Tan, Yucong Guo, Maofa Ge
Chem. Asian J., July 13, 2016, DOI: 10.1002/asia.201600402. Read article
Gold Nanorods (AuNRs) with different surface modification induce distinct metabolic consequences to cancer and noncancer cells. PEI-AuNRs show specific cytotoxiciy to A549 cancer cells companied with large disruptions to the cell metabolisms such as energy metabolism, choline metabolism, hexosamine biosynthesis pathway, and oxidative stress to cells. Comprehensive molecular information of different surface modified AuNRs can be valuable in designing purpose-driven AuNRs.
Zhigang Liu, Liming Wang, Limin Zhang, Xiaochun Wu, Guangjun Nie, Chunying Chen, Huiru Tang, Yulan Wang
Adv. Healthcare Mater., July 08, 2016, DOI: 10.1002/adhm.201600164. Read article
H2O2 generation: Hydrogen peroxide generation at the 2-nitrophenyloctyl ether (NPOE)/water interface with decamethylferrocene (DMFc) as the electron donor, catalyzed by using MoS2 microparticles, is demonstrated. The use of a carbon-paste electrode with an organic phase as a binder allows for electroregeneration of the electron donor.
Justyna Jedraszko, Olga Krysiak, Wojciech Adamiak, Wojciech Nogala, Hubert H. Girault, Marcin Opallo
ChemElectroChem, July 06, 2016, DOI: 10.1002/celc.201600242. Read article
Size matters: the interface of nanodroplets in an inverse miniemulsion is used to produce polyphosphate nanocapsules with phosphorus acting as a probe for 31P NMR spectroscopy to compare the polycondensation at the nanoscopic droplet with macroscopic interfaces proving less unwanted hydrolysis in miniemulsion.
Evandro M. Alexandrino, Manfred Wagner, Katharina Landfester, Frederik R. Wurm
Macromol. Chem. Phys., June 27, 2016, DOI: 10.1002/macp.201600218. Read article
From seeds to nanocrystals: Silicon and germanium nanocrystals (NCs) are attractive materials owing to their unique size and surface-dependent optical properties. The synthesis, surface functionalization, optical properties, biomedical applications, and cytotoxicity of these NCs are compared and contrasted (see figure).
Benjamin F. P. McVey, Sujay Prabakar, Justin J. Gooding, Richard D. Tilley
ChemPlusChem, June 27, 2016, DOI: 10.1002/cplu.201600207. Read article
I. Khalakhan, R. Fiala, J. Lavková, P. Kúš, A. Ostroverkh, M. Václavů, M. Vorokhta, I. Matolínová, V. Matolín
Fuel Cells, June 15, 2016, DOI: 10.1002/fuce.201600016. Read article
Finding reaction paths: the artificial force induced reaction (AFIR) method has been developed for exploring chemical structures and reaction pathways using computers. A technical overview of the AFIR method is presented, together with some numerical examples. The numerical results demonstrate its high applicability and efficiency
Satoshi Maeda, Yu Harabuchi, Makito Takagi, Tetsuya Taketsugu, Keiji Morokuma
The Chemical Record, June 03, 2016, DOI: 10.1002/tcr.201600043. Read article
Anharmonic downward distortion (ADD), indicated by the arrows, plays the role of a guidepost in the scaled hypersphere search method for searching reaction pathways connecting EQ, TS, and DC on the potential energy surface, one after another, to complete global reaction route mapping.
The Chemical Record, April 05, 2016, DOI: 10.1002/tcr.201500284. Read article
Novel dendrons for multipresentation: Water soluble, tetravalent glycodendrons that perform as powerful mannose-binding-lectin (MBL) antagonists are described. The stable scaffold adopted is a versatile tool for nested-layer multipresentation, which enabled the preparation of higher valency antagonists. All the constructs were tested as MBL-C antagonist by a surface-plasmon-resonance assay and showed binding with IC50 values in the low micromolar range.
Giulio Goti, Alessandro Palmioli, Matteo Stravalaci, Sara Sattin, Maria-Grazia De Simoni, Marco Gobbi, Anna Bernardi
Chem. Eur. J., January 15, 2016, DOI: 10.1002/chem.201504388. Read article.
Chains linked: Through the interplay of high-resolution scanning tunneling microscopy imaging and density functional theory calculations, the stepwise homocoupling of alkyl chains on Cu(110) is demonstrated, proceeding from the intact chain, via the dehydrogenative intermediates, to the final coupling products.
Liangliang Cai, Qiang Sun, Chi Zhang, Yuanqi Ding, Wei Xu
Chem. Eur. J., January 8, 2016, DOI: 10.1002/chem.201504152. Read article.
NPs@surfaces: Molecular cross-linkers direct the immobilization of two different gold nanoparticles (AuNPs) on different substrates. Aggregates and island-like films were obtained by using two electronically different cross-linkers and two types of AuNPs with hydrophilic or hydrophobic capping layers (see figure; Cit=citrate, TOAB=tetraoctylammonium bromide).
Sreejith Shankar, Meital Orbach, Revital Kaminker, Michal Lahav, Milko E. van der Boom
Chem. Eur. J., January 7, 2016, DOI: 10.1002/chem.201503297. Read article.
Porphyrin swap shop: Spectroscopic adsorption studies on two complementary model systems, atomically clean thin MgO(100) films and MgO nanocube powders, show that low-coordinated surface cations located in corner, edge, or step regions of the MgO surfaces are subject to ion exchange between adsorbed porphyrin molecules and the oxide surface.
Johannes Schneider, Matthias Franke, Martin Gurrath, Michael Röckert, Thomas Berger, Johannes Bernardi, Bernd Meyer, Hans-Peter Steinrück, Ole Lytken, Oliver Diwald
Chem. Eur. J., December 18, 2015, DOI: 10.1002/chem.201503661. Read article.
Inspired by nature: The ability of blue mussels and other marine creatures to attach to surfaces underwater and to make advanced materials have gained increasing awareness and interest amongst chemists. The combination of catechols and coordination chemistry to yield self-healing materials is the most recent sprout on this growing tree and is the focus of this Minireview.
Marie Krogsgaard, Vicki Nue, Henrik Birkedal
Chem. Eur. J., November 12, 2015, DOI: 10.1002/chem.201503380. Read article.
The evolution of the solid electrolyte interface (SEI) in carbon-coated ZnFe2O4 (ZFO-C) anodes is studied by soft X-ray absorption spectroscopy (XAS). Experiments probe locally the SEI growth in the 2–100 nm range, using both total electron (TEY) and total fluorescence (TFY) yield techniques. XAS analysis shows that the SEI grows preferentially around the ZFO-C nanoparticles.
Andrea Di Cicco, Angelo Giglia, Roberto Gunnella, Stephan L. Koch, Franziska Mueller, Francesco Nobili, Marta Pasqualini, Stefano Passerini, Roberto Tossici, Agnieszka Witkowska
Adv. Energy Mater., July 03, 2015, DOI: 10.1002/aenm.201500642. Read article
Keeping it clean: A crystal growth mechanism of Bi5O7I nanobelts is proposed. The modified Bi5O7I composites show excellent degradation activity of malachite green and bactericidal effects against Pseudomonas aeruginosa, which may be attributed to the higher charge carrier separation efficiency of these heterojunction structures (see figure).
Chaohong Liu, Dun Zhang
Chem. Eur. J., June 30, 2015, DOI: 10.1002/chem.201500383. Read article.