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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

The Dynamics of the Reaction of FeO+ and H2: A Model for Inorganic Oxidation

The Dynamics of the Reaction of FeO+ and H2: A Model for Inorganic Oxidation

On the rebound: The reaction of the FeO+ cation with H2, a simple model for many oxidation processes, proceeds through a “rebound” as well as the known insertion–elimination mechanism. This was revealed by classical trajectory studies on the sextet and quartet potential energy surfaces of the title reaction.

[Communication]
Stéphanie Essafi, David P. Tew, Jeremy N. Harvey
Angew. Chem. Int. Ed., April 21, 2017, https://doi.org/10.1002/anie.201702009 Read article

Reverse Intramolecular Stacking in o-Xylene Bridge Symmetrical Dimers of 2-Thiopyridine Derivative: Assessment of the Conformational Stability

Reverse Intramolecular Stacking in o‐Xylene Bridge Symmetrical Dimers of 2‐Thiopyridine Derivative: Assessment of the Conformational Stability

The o-xylene based symmetrical dimers of 2-thiopyridine derivative (1-3) have shown reverse intramolecular stacked conformation in solid state. The reverse stacked conformations have also been proved by density functional theory however it varies from crystal geometry. Further, 1H NMR spectra as compared to their monomeric structures and higher wavelength shift of absorption maximum in UV spectrum revealed that intramolecular stacked geometry also stable in solutions state. The compound 3 has shown polymorphs such as 3a and 3b have been achieved by single crystal analysis, DSC spectra, overlay diagram and Hirshfeld surface analysis.

[Full Paper]
Ranjeet Kumar, Archana Gaurav, Shiv Pal, Krishnan R. Kumar, Balasubramanian Sridhar, Ashish K. Tewari
ChemistrySelect, April 13, 2017, https://doi.org/10.1002/slct.201700269 Read article

Anisotropic Wetting of Water on Patterned Asymmetric Nanostructure Arrays

Anisotropic Wetting of Water on Patterned Asymmetric Nanostructure Arrays

Two asymmetric nanostructures arrays with different directions are integrated in a single surface. Water shows unidirectional wetting on it toward resultant direction of the two wetting directions, which provides a strategy to modulate the wetting behavior of water.

[Full Paper]
Peng Ge, Shuli Wang, Wendong Liu, Tieqiang Wang, Nianzuo Yu, Peihong Xue, Hongxu Chen, Huaizhong Shen, Junhu Zhang, Bai Yang
Adv. Mater. Interfaces, April 13, 2017, https://doi.org/10.1002/admi.201700034 Read article

UV-Triggered Polymerization, Deposition, and Patterning of Plant Phenolic Compounds

UV‐Triggered Polymerization, Deposition, and Patterning of Plant Phenolic Compounds

UV-induced polymerization, deposition, and patterning of plant-derived phenolic compounds are demonstrated. Phenolic compounds, rich in catechol and pyrogallol moieties, possess pronounced biological activity, including antioxidant and antimicrobial properties. This study demonstrates the ability to photochemically control their polymerization to form polyphenol coatings and patterns, which extends the scope of possible applications of this important group of structurally diverse substances.

[Full Paper]
Farid Behboodi-Sadabad, Huijie Zhang, Vanessa Trouillet, Alexander Welle, Nicolas Plumeré, Pavel A. Levkin
Adv. Funct. Mater., April 13, 2017, https://doi.org/10.1002/adfm.201700127 Read article

Trap-State Suppression and Improved Charge Transport in PbS Quantum Dot Solar Cells with Synergistic Mixed-Ligand Treatments

Trap‐State Suppression and Improved Charge Transport in PbS Quantum Dot Solar Cells with Synergistic Mixed‐Ligand Treatments

A mixed-ligand treatment for the fabrication of lead sulphide colloidal quantum dot solar cells is demonstrated. The mixed-ligand treatment facilitates the advantages of both organic (3-mercaptopropionic acid) and inorganic (zinc iodide) ligands to improve charge transport and trap passivation leading to a power conversion efficiency of 9.92% at a VOC of 0.66 V.

[Communication]
Santanu Pradhan, Alexandros Stavrinadis, Shuchi Gupta, Yu Bi, Francesco Di Stasio, Gerasimos Konstantatos
Small, April 12, 2017, https://doi.org/10.1002/smll.201700598 Read article

The Birth of Nickel Phosphide Catalysts: Monitoring Phosphorus Insertion into Nickel

The Birth of Nickel Phosphide Catalysts: Monitoring Phosphorus Insertion into Nickel

TOP class: A mechanistic study of tri-n-octylphosphine decomposition at a nickel surface shows phosphide formation at temperatures as low as 150 °C accompanied by sp2 carbon deposition. These two results are confirmed on nickel nanoparticles.

[Full Paper]
Sophie Carenco, Zhi Liu, Miquel Salmeron
ChemCatChem, April 12, 2017, https://doi.org/10.1002/cctc.201601526 Read article

Efficient and Stable Vacuum-Free-Processed Perovskite Solar Cells Enabled by a Robust Solution-Processed Hole Transport Layer

Efficient and Stable Vacuum‐Free‐Processed Perovskite Solar Cells Enabled by a Robust Solution‐Processed Hole Transport Layer

No vacuum needed: We report the use of a solution-processed Mo(tfd-COCF3)3-doped PEDOT film as hole transport layer for achieving high-performance and stable hybrid perovskite solar cells prepared by vacuum-free processing.

[Full Paper]
Chih-Yu Chang, Bo-Chou Tsai, Yu-Cheng Hsiao
ChemSusChem, April 11, 2017, https://doi.org/10.1002/cssc.201700340 Read article

Understanding the Changes to Biomass Surface Characteristics after Ammonia and Organosolv Pretreatments by Using Time-of-Flight Secondary-Ion Mass Spectrometry (TOF-SIMS)

Understanding the Changes to Biomass Surface Characteristics after Ammonia and Organosolv Pretreatments by Using Time‐of‐Flight Secondary‐Ion Mass Spectrometry (TOF‐SIMS)

Elucidating biomass surface: Time-of-flight secondary-ion mass spectrometry (TOF-SIMS) analysis is an effective tool to understand the surface characteristics of biomass (see figure). Investigated here are the surface characteristics of untreated, ammonia-pretreated, and organosolv-pretreated Populus deltoides wood samples by means of TOF-SIMS. Other analytical methods are also discussed.

[Communication]
Allison K. Tolbert, Chang Geun Yoo, Arthur J. Ragauskas
ChemPlusChem, April 11, 2017, https://doi.org/10.1002/cplu.201700138 Read article

C 1s Peak of Adventitious Carbon Aligns to the Vacuum Level: Dire Consequences for Material's Bonding Assignment by Photoelectron Spectroscopy

C 1s Peak of Adventitious Carbon Aligns to the Vacuum Level: Dire Consequences for Material's Bonding Assignment by Photoelectron Spectroscopy

Zeros matter: The C 1s signal from adventitious carbon (AdC) is the most common binding energy (BE) reference in X-ray photoelectron spectroscopy. It is shown here that the BE of the C 1s peak inline image is substrate dependent, which makes BE referencing highly unreliable. Surprisingly, C 1s shifts correlate to changes in the sample work function inline image , such that the sum inline image is constant irrespective of the materials system and air exposure time, indicating vacuum level alignment. This discovery allows for significantly better accuracy of chemical state determination.

[Communication]
Grzegorz Greczynski, Lars Hultman
ChemPhysChem, April 11, 2017, https://doi.org/10.1002/cphc.201700126 Read article

Programmable Nano–Bio Interfaces for Functional Biointegrated Devices

Programmable Nano–Bio Interfaces for Functional Biointegrated Devices

Recent advances in biointegrated devices are attributed to the precise programming of nano–bio interactions, especially with regard to the rational assembly of constituent nanomaterials on multiple dimension scales. Their respective intrinsic merits are leveraged for different functions, such as multimodal theragnostics and smart therapeutics delivery, permitting their implementation into a variety of functional biointegrated devices, including flexible nanoelectronic devices.

[Review]
Pingqiang Cai, Wan Ru Leow, Xiaoyuan Wang, Yun-Long Wu, Xiaodong Chen
Adv. Mater., April 11, 2017, https://doi.org/10.1002/adma.201605529 Read article

Nanostructured Multilayer Films Assembled from Poly(dopamine)-Coated Carbon Nanotubes for Controlling Cell Behavior

Nanostructured Multilayer Films Assembled from Poly(dopamine)‐Coated Carbon Nanotubes for Controlling Cell Behavior

Caught on film: A multilayer film with nano-topographic surface is fabricated through layer-by-layer assembly of poly(dopamine)-coated carbon nanotubes (CNTs@PDA) and poly(l-lysine) (PLL). The adhesion and proliferation of endothelial cells, smooth muscle cells, and pheochromocytoma cells on the PLL/CNTs@PDA film were followed and compared.

[Full Paper]
Bo-chao Li, Ke-feng Ren, He Zhang, Fan Jia, Jin-lei Wang, Hao Chang, Yun-bing Wang, Jian Ji
ChemNanoMat, April 10, 2017, https://doi.org/10.1002/cnma.201700024 Read article

Growth of Silver Nanowires from Controlled Silver Chloride Seeds and Their Application for Fluorescence Enhancement Based on Localized Surface Plasmon Resonance

Growth of Silver Nanowires from Controlled Silver Chloride Seeds and Their Application for Fluorescence Enhancement Based on Localized Surface Plasmon Resonance

Tens of nanometer scale AgCl seeds are uniformly synthesized in a microdroplet by controlling the reagent concentration, which are used for seed-mediated growth of Ag nanowires (NWs). The transversely- and longitudinally-tuned Ag-NWs are spectroscopically monitored, and their localized surface plasmon resonance properties are utilized for fluorescence enhancement, where the enhancement factor and fluorescence lifetime are measured.

[Full Paper]
Sunwoong Bae, Hyeji Han, Jin Gook Bae, Eun Yeol Lee, Sang Hyuk Im, Do Hyun Kim, Tae Seok Seo
Small, April 07, 2017, https://doi.org/10.1002/smll.201603392 Read article

Building Up Colors: Multilayered Arrays of Peryleneimides on Flat Surfaces and Mesoporous Layers

Building Up Colors: Multilayered Arrays of Peryleneimides on Flat Surfaces and Mesoporous Layers

Filling up the pores: Multilayers composed of perylene dyes are deposited on thin Al2O3 layers and mesoporous TiO2 by a simple dip-by-dip process. As many as 33 layers can be grown on Al2O3, whereas the voids between particles of mesoporous TiO2 can be bridged with dye layers (see figure). Microcrystal growth during the process can be controlled by employing appropriate washing techniques.

[Full Paper]
Lijo George, Elena Efimova, Essi Sariola-Leikas, Kimmo Lahtonen, Mika Valden, Paola Vivo, Hanna Hakola, Arto Hiltunen, Alexander Efimov
ChemPlusChem, April 07, 2017, https://doi.org/10.1002/cplu.201700061 Read article

Fabrication of Micropatterned Self-Oscillating Polymer Brush for Direction Control of Chemical Waves

Fabrication of Micropatterned Self‐Oscillating Polymer Brush for Direction Control of Chemical Waves

Pentagonal patterned polymer brushes are fabricated to control spatiotemporal function on the surface. The polymer brush is prepared by surface modification of a self-oscillating polymer that exhibits autonomous conformation changes. The microlevel precision in patterning of the polymer brush via maskless photolithography allows the chemical waves to travel in one direction along the pentagonal array of this self-oscillating surface.

[Full Paper]
Kenta Homma, Tsukuru Masuda, Aya Mizutani Akimoto, Kenichi Nagase, Kazuyoshi Itoga, Teruo Okano, Ryo Yoshida
Small, April 06, 2017, https://doi.org/10.1002/smll.201700041 Read article

Specular and Diffuse Reflectance of Phase-Separated Polymer Blend Films

Specular and Diffuse Reflectance of Phase‐Separated Polymer Blend Films

Diffuse reflectors are used in liquid crystal displays, light emitting diodes, and solar panels. This study demonstrates the specular and diffuse reflectance of thermally phase-separated polymer blend (polystyrene/polymethylmethacrylate(PMMA)) films in which polystyrene is selectively removed, leaving behind surface-roughened PMMA films (SRPF). The resulting SRPF exhibits diffuse reflectance from nanosurface-roughened films, which, in turn, depend on scale of phase separation.

[Communication]
Asritha Nallapaneni, Matthew D. Shawkey, Alamgir Karim
Macromol. Rapid Commun., April 06, 2017, https://doi.org/10.1002/marc.201600803 Read article

Bi2WO6 Nanosheets Decorated with Au Nanorods for Enhanced Near-Infrared Photocatalytic Properties Based on Surface Plasmon Resonance Effects and Wide-Range Near-Infrared Light Harvesting

Bi2WO6 Nanosheets Decorated with Au Nanorods for Enhanced Near‐Infrared Photocatalytic Properties Based on Surface Plasmon Resonance Effects and Wide‐Range Near‐Infrared Light Harvesting

Rods of gold: Au nanorods are used to enhance the NIR-light absorption of Bi2WO6, a typical visible-light and novel NIR-light photocatalyst. The enhancement of the composite's NIR-light photocatalytic and photoelectrochemical properties can be attributed to the surface plasmon resonance (SPR) effects and wide-range NIR light harvesting of the Au nanorods.

[Full Paper]
Xiaolin Hu, Jian Tian, Yanjun Xue, Yujie Li, Hongzhi Cui
ChemCatChem, April 06, 2017, https://doi.org/10.1002/cctc.201601719 Read article

Intermetallic Compounds as Potential Alternatives to Noble Metals in Heterogeneous Catalysis: The Partial Hydrogenation of Butadiene on γ-Al4Cu9(1 1 0)

Intermetallic Compounds as Potential Alternatives to Noble Metals in Heterogeneous Catalysis: The Partial Hydrogenation of Butadiene on γ‐Al4Cu9(1 1 0)

Interesting intermetallics: Intermetallic compounds are potential catalyst alternatives to noble metals. Using surface-science methods, the catalytic properties of the γ-Al4Cu9 phase have been investigated for the first time. This material is highly selective for the partial hydrogenation of butadiene to butenes, that is, no butane is produced. Although the active sites are likely composed of Cu atoms (blue), neighboring Al atoms (grey) may strengthen the hydrocarbon–surface bond.

[Full Paper]
Laurent Piccolo, Lidiya Kibis, Marie-Cécile De Weerd, Emilie Gaudry, Julian Ledieu, Vincent Fournée
ChemCatChem, April 06, 2017, https://doi.org/10.1002/cctc.201601587 Read article

Surface-Triggered Tandem Coupling Reactions of Cyclic Azasilanes

Surface‐Triggered Tandem Coupling Reactions of Cyclic Azasilanes

Working in tandem: Cyclic azasilanes contain a cryptic amine functionality that can perform a subsequent tandem coupling reaction with functional molecules after a surface-triggered ring-opening reaction (see figure), allowing for a one-pot self-assembly route on nanostructures.

[Communication]
Youlin Pan, Annalese Maddox, Taewoo Min, Ferdinand Gonzaga, Jonathan Goff, Barry Arkles
Chem. Asian J., April 06, 2017, https://doi.org/10.1002/asia.201700137 Read article

Performance Enhancement of Tri-Cation and Dual-Anion Mixed Perovskite Solar Cells by Au@SiO2 Nanoparticles

Performance Enhancement of Tri‐Cation and Dual‐Anion Mixed Perovskite Solar Cells by Au@SiO2 Nanoparticles

Au@SiO2 core−shell nanoparticles are incorporated into perovskite solar cells based on tri-cation (cesium, methylammonium, and formamidinium) and dual-anion (Br and I) mixed perovskite. Significant enhancements are observed in nearly all photovoltaic parameters after Au@SiO2 nanoparticles incorporation. The enhanced device performance can be ascribed to the light absorption enhancement, more efficient carrier injection/transport, and the enhanced charge carriers mobilities.

[Full Paper]
Tao Ye, Shaoyang Ma, Xi Jiang, Lei Wei, Chellappan Vijila, Seeram Ramakrishna
Adv. Funct. Mater., April 06, 2017, https://doi.org/10.1002/adfm.201606545 Read article

Robust Heterogeneous Hydrogels with Dynamic Nanocrystal–Polymer Interface

Robust Heterogeneous Hydrogels with Dynamic Nanocrystal–Polymer Interface

Stretchable and compressible hydrogels are prepared via host–guest interaction between cellulose nanocrystals and polymer chains. The regeneration of the sacrificed host–guest complexes in deformed hydrogels is prevented in the swollen hydrogels, which is owing to the highly heterogeneous hydrogel structure. Furthermore, the heterogeneous structure and host–guest interaction together can effectively retard the crack propagation in the hydrogels.

[Communication]
Heqin Huang, Yonggui Wang, Xiaojie Wang, Florian Rehfeldt, Kai Zhang
Macromol. Rapid Commun., April 04, 2017, https://doi.org/10.1002/marc.201600810 Read article

Electrochemistry of Redox-Active Guest Molecules at β-Cyclodextrin-Functionalized Silicon Electrodes

Electrochemistry of Redox‐Active Guest Molecules at β‐Cyclodextrin‐Functionalized Silicon Electrodes

To transfer or not to transfer? Silicon surfaces are functionalized with β-cyclodextrin molecules to investigate the electronic coupling between these host monolayers and the substrate (see picture). The electron transfer of a ferrocene-based guest was found to be more favorable on p++ substrates compared to low-doped p-type surfaces.

[Article]
Janneke Veerbeek, Alejandro Méndez-Ardoy, Jurriaan Huskens
ChemElectroChem, April 04, 2017, https://doi.org/10.1002/celc.201600872 Read article

One-Pot Synthesis of Polyhydroquinoline Derivatives through Organic-Solid-Acid-Catalyzed Hantzsch Condensation Reaction

One‐Pot Synthesis of Polyhydroquinoline Derivatives through Organic‐Solid‐Acid‐Catalyzed Hantzsch Condensation Reaction

One pot, four components, and a sulfonated catalyst: A new and efficient sulfonic-acid-functionalized organic solid-acid catalyst SPPN with a large surface area shows excellent catalytic activity in the one-pot synthesis of biologically important polyhydroquinoline derivatives.

[Full Paper]
Sujan Mondal, Bidhan Chandra Patra, Asim Bhaumik
ChemCatChem, April 04, 2017, https://doi.org/10.1002/cctc.201601409 Read article

Tuning Contact Barrier Height between Metals and MoS2 Monolayer through Interface Engineering

Tuning Contact Barrier Height between Metals and MoS2 Monolayer through Interface Engineering

Based on first-principles calculations, it has been shown that the interaction between metals and MoS2 monolayer can be tuned by interface engineering. By using an additional MoS2 layer as a buffer layer, the strong interfacial interaction is reduced, which results in a significantly lowered Schottky barrier height and a semiconducting MoS2 channel layer.

[Full Paper]
Jian Wei Chai, Ming Yang, Martin Callsen, Jun Zhou, Tong Yang, Zheng Zhang, Ji Sheng Pan, Dong Zhi Chi, Yuan Ping Feng, Shi Jie Wang
Adv. Mater. Interfaces, April 04, 2017, https://doi.org/10.1002/admi.201700035 Read article

Surface Engineering of Spherical Metal Nanoparticles with Polymers toward Selective Asymmetric Synthesis of Nanobowls and Janus-Type Dimers

Surface Engineering of Spherical Metal Nanoparticles with Polymers toward Selective Asymmetric Synthesis of Nanobowls and Janus‐Type Dimers

Asymmetric metal nanobowls and Janus-type metal–metal dimers via a general synthetic method utilizing surface patterning of spherical metal nanoparticles with amphiphilic polymer tethers is reported. Proof-of-concept experiments on Janus-type patched Ag/ or Au/polymer NPs are shown, including i) synthesis of Au nanobowls via a selective galvanic replacement reaction and ii) preparation of Au–Pd heterodimers and Au–Au homodimers by a seed-mediated growth method.

[Communication]
Ben Liu, Srinivas Thanneeru, Aaron Lopes, Lei Jin, Meghan McCabe, Jie He
Small, April 03, 2017, https://doi.org/10.1002/smll.201700091 Read article

Controlled Growth of Gold Nanostars: Effect of Spike Length on SERS Signal Enhancement

Controlled Growth of Gold Nanostars: Effect of Spike Length on SERS Signal Enhancement

Anchoring stars to surfaces: By varying the temperature, it is possible to control the growth, size, and length of the spikes on gold nanostars during preparation. The effects of these nanostars on SERS signals are investigated by using glutathione and crystal violet as analytes. Shorter spikes lead to greater SERS signal enhancement than the longer spikes.

[Article]
S. V. Sheen Mers, S. Umadevi, V. Ganesh
ChemPhysChem, April 03, 2017, https://doi.org/10.1002/cphc.201601380 Read article

Synergistically Controlled Stemness and Multilineage Differentiation Capacity of Stem Cells on Multifunctional Biointerfaces

Synergistically Controlled Stemness and Multilineage Differentiation Capacity of Stem Cells on Multifunctional Biointerfaces

A multifunctional matrix/interface is created using a novel multicomponent coating to provide synergistic coupling of fibroblast growth factor 2 and chitosan with defined composition. The resultant cell culture matrix/interface enables the proliferation of spheroids of adipose stem cells with enhanced stemness and the capacity to (trans-)differentiate into multiple cell lineages in the mesoderm, endoderm, and ectoderm.

[Full Paper]
Chih-Yu Wu, Hui-Yu Liu, Chao-Wei Huang, Shu-Yun Yeh, Nai-Chen Cheng, Shih-Torng Ding, Hsien-Yeh Chen
Adv. Mater. Interfaces, April 03, 2017, https://doi.org/10.1002/admi.201700243 Read article

Benchmark Performance of Global Switching versus Local Switching for Trajectory Surface Hopping Molecular Dynamics Simulation: CisTrans Azobenzene Photoisomerization

Benchmark Performance of Global Switching versus Local Switching for Trajectory Surface Hopping Molecular Dynamics Simulation: Cis↔Trans Azobenzene Photoisomerization

Make the switch: A global switching method is demonstrated to be as accurate as local switching in Tully's fewest switching method for describing the isomerization of azobenzene. The present method is therefore a useful tool in excited-state nonadiabatic molecular dynamics simulations of large systems in which nonadiabatic couplings are usually unavailable for most quantum chemistry methods. The present method is coded into the Newton-X platform.

[Article]
Ling Yue, Le Yu, Chao Xu, Yibo Lei, Yajun Liu, Chaoyuan Zhu
ChemPhysChem, March 31, 2017, https://doi.org/10.1002/cphc.201700049 Read article

Improved Rate Capability of Li-Rich Cathode Materials by Building a Li+-Conductive LixBPO4+x/2 Nanolayer from Residual Li2CO3 on the Surface

Improved Rate Capability of Li‐Rich Cathode Materials by Building a Li+‐Conductive LixBPO4+x/2 Nanolayer from Residual Li2CO3 on the Surface

Powerful skin: A Li+-conductive LixBPO4+x/2 nanolayer is formed by taking advantage of the residual alkaline substance (i. e. Li2CO3) on the surface of Li1.16(Ni0.25Mn0.75)0.84O2 particles. The layer not only removes some of the detrimental residues, but also provides a Li-ion diffusion path and physical protection, which contributes to the significant improvement of rate capability and cycling stability of Li1.16(Ni0.25Mn0.75)0.84O2.

[Article]
Leilei Ma, Yang Li, Zonghai Chen, Fan Zhang, Pengchong Ding, Lei Mao, Fang Lian
ChemElectroChem, March 30, 2017, https://doi.org/10.1002/celc.201700157 Read article

The Role of Titanium Surface Nanostructuring on Preosteoblast Morphology, Adhesion, and Migration

The Role of Titanium Surface Nanostructuring on Preosteoblast Morphology, Adhesion, and Migration

Different nanotopologies are generated on the surface of titanium implants by ultrasound treatment (left) and by anodic oxidation (right). The structural differences influence morphology and migration behavior of preosteoblastic cells growing on these surfaces. A quantitative wound healing assay in combination with live-cell imaging reveals more collective cell migration behavior on the disordered mesoporous surfaces generated by sonochemistry (left).

[Full Paper]
Yulia Zhukova, Christian Hiepen, Petra Knaus, Marc Osterland, Steffen Prohaska, John W. C. Dunlop, Peter Fratzl, Ekaterina V. Skorb
Adv. Healthcare Mater., March 30, 2017, https://doi.org/10.1002/adhm.201601244 Read article

Grafting Binary PEG and Fluoropolymer Brushes from Mix-Biomimic Initiator as “Ambiguous” Surfaces for Antibiofouling

Grafting Binary PEG and Fluoropolymer Brushes from Mix‐Biomimic Initiator as “Ambiguous” Surfaces for Antibiofouling

Grafting binary poly(ethylene glycol) and fluoropolymer brushes via surface initiated polymerizations from mix-catecholic initiators are studied. The synthesis routine has combined mussel inspired coating and controlled polymerization (atom transfer radical polymerization and ring opening metathesis polymerization), and the universal anchoring ability of polydopamine promises the method application to various substrates, and the as-prepared “ambiguous” surfaces can inhibit biofouling effectively.

[Full Paper]
Qian Ye, Wenwen Zhao, Wufang Yang, Xiaowei Pei, Feng Zhou
Macromol. Chem. Phys., March 29, 2017, https://doi.org/10.1002/macp.201700085 Read article

The Influence of Ultrathin Amorphous ALD Alumina and Titania on the Rate Capability of Anatase TiO2 and LiMn2O4 Lithium Ion Battery Electrodes

The Influence of Ultrathin Amorphous ALD Alumina and Titania on the Rate Capability of Anatase TiO2 and LiMn2O4 Lithium Ion Battery Electrodes

Atomic layer deposition (ALD) is widely investigated for thin-film modifications of lithium-ion battery (LIB) surfaces. The influence of these coatings on the rate performance is often overlooked. In this paper, this rate-effect is investigated on model electrodes. ALD Al2O3 is found to induce a too high impedance toward lithium. ALD TiO2 does not impede lithium ions, and can aid in stabilizing LIB electrode interfaces.

[Full Paper]
Felix Mattelaer, Philippe M. Vereecken, Jolien Dendooven, Christophe Detavernier
Adv. Mater. Interfaces, March 29, 2017, https://doi.org/10.1002/admi.201601237 Read article

Lewis Acid Induced Functionalization of Photoluminescent 2D Silicon Nanosheets for the Fabrication of Functional Hybrid Films

Lewis Acid Induced Functionalization of Photoluminescent 2D Silicon Nanosheets for the Fabrication of Functional Hybrid Films

Different Lewis acids are used to catalyze hydrosilylation reactions on silicon nanosheets to modify the surface with different functional substrates. The resulting hybrid material exhibits outstanding (opto)electronic properties, which is shown by the fabrication of silicon nanosheet/semiconducting polymer-based field-effect transistors with enhanced sensitivity and increased transconductance.

[Full Paper]
Tobias Helbich, Alina Lyuleeva, Philipp Marx, Lavinia M. Scherf, Tapas K. Purkait, Thomas F. Fässler, Paolo Lugli, Jonathan G. C. Veinot, Bernhard Rieger
Adv. Funct. Mater., March 29, 2017, https://doi.org/10.1002/adfm.201606764 Read article

Spin-Forbidden Branching in the Mechanism of the Intrinsic Haber–Weiss Reaction

Spin‐Forbidden Branching in the Mechanism of the Intrinsic Haber–Weiss Reaction

The forbidden fruit: The gas-phase reaction between superoxide and hydrogen peroxide is studied at the theoretical level, and the major products are associated with a spin-forbidden pathway. Possible reasons for this preference are given in terms of characteristics of the calculated potential energy surfaces for the doublet and quartet states, including regions of crossing and near degeneracy between them.

[Communication]
Ezequiel F. V. Leitão, Elizete Ventura, Miguel A. F. de Souza, José M. Riveros, Silmar A. do Monte
ChemistryOpen, March 23, 2017, https://doi.org/10.1002/open.201600169 Read article

Precursor-Directed Nucleation and Self-Assembly Growth: From Hollow Microprisms to Nanoplatelets

Precursor‐Directed Nucleation and Self‐Assembly Growth: From Hollow Microprisms to Nanoplatelets

Using hollow-prismatic Li3PO4 microcrystals as a solid precursor and ‘tracer’, the structural and morphological evolution from microprisms to [100]-oriented LiFePO4 ultrathin nanoplatelets is visualized.

[Communication]
Zhaojin Li, Tao Hu, Zhenzhen Peng, Minmin Hu, Kongjun Zhu, Xiaohui Wang
ChemNanoMat, March 22, 2017, https://doi.org/10.1002/cnma.201700007 Read article

Single Molecule Force Spectroscopy to Compare Natural versus Artificial Antibody–Antigen Interaction

Single Molecule Force Spectroscopy to Compare Natural versus Artificial Antibody–Antigen Interaction

Using atomic force microscopy-based force spectroscopy, the binding affinity of an artificial antibody to an antigen (hemoglobin) is found to be weaker than that of a natural antibody. The fine difference in the molecular interactions manifests into a significant difference in the bioanalytical parameters of biosensors based on these recognition elements.

[Communication]
Congzhou Wang, Rong Hu, Jeremiah J. Morrissey, Evan D. Kharasch, Srikanth Singamaneni
Small, March 21, 2017, https://doi.org/10.1002/smll.201604255 Read article

Self-Assembling Brush Polymers Bearing Multisaccharides

Self‐Assembling Brush Polymers Bearing Multisaccharides

Three different series of brush polymers bearing glucosyl, maltosyl, or maltotriosyl moiety at the bristle end are successfully prepared. Excitingly, they demonstrate the formation of multibilayer structure in films, always providing saccharide-enriched surface. The saccharide-enriched film surfaces reveal exceptionally high specific binding affinity to concanavalin A but severely suppress nonspecific binding of plasma proteins severely.

[Communication]
Jongchan Lee, Jin Chul Kim, Hoyeol Lee, Sungjin Song, Heesoo Kim, Moonhor Ree
Macromol. Rapid Commun., March 21, 2017, https://doi.org/10.1002/marc.201700013 Read article

Suppression of Hysteresis Effects in Organohalide Perovskite Solar Cells

Suppression of Hysteresis Effects in Organohalide Perovskite Solar Cells

A high PCE of 17.1% for a planar structured perovskite solar cell is presented by simply depositing a phosphonic acid based mixed self-assembled monolayer (SAM) layer on top of transparent electrodes. This ultrathin SAM layer improves not only the charge extraction but also the crystalline quality of perovskite films and results in an effectively suppressed hysteresis effect.

[Communication]
Yi Hou, Simon Scheiner, Xiaofeng Tang, Nicola Gasparini, Moses Richter, Ning Li, Peter Schweizer, Shi Chen, Haiwei Chen, Cesar Omar Ramirez Quiroz, Xiaoyan Du, Gebhard J. Matt, Andres Osvet, Erdmann Spiecker, Rainer H. Fink, Andreas Hirsch, Marcus Halik, Christoph J. Brabec
Adv. Mater. Interfaces, March 21, 2017, https://doi.org/10.1002/admi.201700007 Read article

Controlled Generation of Ultrathin-Shell Double Emulsions and Studies on Their Stability

Controlled Generation of Ultrathin‐Shell Double Emulsions and Studies on Their Stability

Stable for months: The formation and stability of ultrathin-shell water/oil/water double emulsions were studied by using a glass capillary device. The concentration of surfactant in the middle, oil phase plays a critical role in stabilising the double emulsions. The ultrathin-shell double emulsions (see figure) can be stable for up to several months, and this paves the way for their future applications in various fields.

[Article]
Chun-Xia Zhao, Dong Chen, Yue Hui, David A. Weitz, Anton P. J. Middelberg
ChemPhysChem, March 20, 2017, https://doi.org/10.1002/cphc.201601334 Read article

Photoelectrochemical Probing of Cellular Interfaces and Evaluation of Cellular H2S Production Based on In Situ-Generated CdS-Enhanced TiO2 Nanotube Heterostructures

Photoelectrochemical Probing of Cellular Interfaces and Evaluation of Cellular H2S Production Based on In Situ‐Generated CdS‐Enhanced TiO2 Nanotube Heterostructures

Give me the signal: This work reports the novel photoelectrochemical probing of cellular interfaces and evaluation of cellular H2S production based on in situ-generated CdS-enhanced TiO2 nanotube heterostructures. Through the direct culturing and interfacing of HepG2 cells onto the TiO2 NT electrode, loaded with Cd2+, the pathway of cellular stimulation and H2S generation could be monitored based on the intensities of the photocurrent signals.

[Article]
Yuan-Cheng Zhu, Qian Wang, Li-Bin Zhang, Wei-Wei Zhao, Jing-Juan Xu, Hong-Yuan Chen
ChemElectroChem, March 08, 2017, https://doi.org/10.1002/celc.201700149 Read article

High Toughness in Ultralow Density Graphene Oxide Foam

High Toughness in Ultralow Density Graphene Oxide Foam

A scalable synthesis method of low-density 3D macroscopic structure of graphene oxide (GO) interconnected with the polydimethylsiloxane (PDMS) is demonstrated. High affinity of PDMS molecules to GO functional groups is utilized to interconnect GO nanosheets, resulting in high tensile plasticity and toughness foam.

[Communication]
Peter Samora Owuor, Cristiano F. Woellner, Tong Li, Soumya Vinod, Sehmus Ozden, Suppanat Kosolwattana, Sanjit Bhowmick, Luong Xuan Duy, Rodrigo V. Salvatierra, Bingqing Wei, Syed A. S. Asif, James M. Tour, Robert Vajtai, Jun Lou, Douglas S. Galvão, Chandra Sekhar Tiwary, Pulickel. M. Ajayan
Adv. Mater. Interfaces, March 07, 2017, https://doi.org/10.1002/admi.201700030 Read article

Picene thin films on metal surfaces: Impact of molecular shape on interfacial coupling

Picene thin films on metal surfaces: Impact of molecular shape on interfacial coupling

The peculiar packing structure of picene leads to weak interfacial coupling on clean metal surfaces. In contrast, pentacene is chemisorbed on Ag and Cu surfaces involving electron transfer from the substrate.

[Rapid Research Letter]
Qi Wang, Qian Xin, Rong-Bin Wang, Martin Oehzelt, Nobuo Ueno, Satoshi Kera, Steffen Duhm
Phys. Status Solidi RRL, March 03, 2017, https://doi.org/10.1002/pssr.201700012 Read article

Probing the Surface of a Laccase for Clues towards the Design of Chemo-Enzymatic Catalysts

Probing the Surface of a Laccase for Clues towards the Design of Chemo‐Enzymatic Catalysts

A chemo-enzymatic hybrid: The efficiency of a sensitizer–laccase–O2 system in the bio-inspired oxidation of olefins is greatly influenced by the location of the photocatalyst at the laccase surface. The sensitizer is a ruthenium–polypyridyl complex introduced by selective reductive alkylation chemistry at an accessible lysine residue.

[Full Paper]
Viviane Robert, Emanuele Monza, Lionel Tarrago, Ferran Sancho, Anna De Falco, Ludovic Schneider, Eloïne Npetgat Ngoutane, Yasmina Mekmouche, Pierre Rousselot Pailley, A. Jalila Simaan, Victor Guallar, Thierry Tron
ChemPlusChem, March 02, 2017, https://doi.org/10.1002/cplu.201700030 Read article

Colloidal Metal Nanoparticles Prepared by Laser Ablation and their Applications

Colloidal Metal Nanoparticles Prepared by Laser Ablation and their Applications

The technology of pulsed laser ablation in liquid (PLAL) opens a promising venue for the preparation of colloidal metal nanoparticles through a physical process. The PLAL nanoparticles possess unique surface features that are significantly distinctive from their counterparts synthesized chemically. This has rendered them attractive candidates for many interesting applications in catalysis, biology, sensing, and clean energy generation and storage.

[Review]
Jianming Zhang, Jerome Claverie, Mohamed Chaker, Dongling Ma
ChemPhysChem, February 27, 2017, https://doi.org/10.1002/cphc.201601220 Read article

Dual-functional crystalline BeO layer in enhancement-mode ZnO/Si thin film transistors

Dual‐functional crystalline BeO layer in enhancement‐mode ZnO/Si thin film transistors

It is a challenging task to fabricate crystalline oxides on Si since Si is reactive with many elements, especially oxygen, resulting in extensive inter-diffusion or chemical reactions. Here Liang et al. report an interface-engineering approach to this issue by molecular beam epitaxy. A thin-film transistor working in the enhancement mode was achieved, demonstrating it can potentially combine multi-functional crystalline oxides with the well-developed Si infrastructure.

[Rapid Research Letter]
Huili Liang, Zengxia Mei, Daqian Ye, Junqiang Li, Wen-Chiang Hong, Qinghua Zhang, Yaoping Liu, Lin Gu, Richeng Yu, Yicheng Lu, Xiaolong Du
Phys. Status Solidi RRL, February 23, 2017, https://doi.org/10.1002/pssr.201600443 Read article

Theoretical Investigation of 2D Layered Materials as Protective Films for Lithium and Sodium Metal Anodes

Theoretical Investigation of 2D Layered Materials as Protective Films for Lithium and Sodium Metal Anodes

The practicability of the typical 2D layered materials (h-BN, graphene, silicene, germanene, stanene, phosphorene, SnS, and SnSe) as protecting films for lithium or sodium metal anodes from aspects of both the diffusion and mechanical properties is studied by first-principles calculations, and the study focuses on their relationship with the crystalline structures, defect feature, and metal's proximity effect.

[Full Paper]
Hongzhen Tian, Zhi Wei Seh, Kai Yan, Zhongheng Fu, Peng Tang, Yingying Lu, Ruifeng Zhang, Dominik Legut, Yi Cui, Qianfan Zhang
Adv. Energy Mater., February 17, 2017, https://doi.org/10.1002/aenm.201602528 Read article

A Disposable Homemade Screen Printed Electrochemical Sensor for Vitamin B1 Determination in Multivitamin Ampoules: Potentiometric and Surface Morphology Studies

A Disposable Homemade Screen Printed Electrochemical Sensor for Vitamin B1 Determination in Multivitamin Ampoules: Potentiometric and Surface Morphology Studies

[Full Paper]
Yousry M. Issa, Omaima E. Sherif, Ahmed S. Abo Dena
Electroanalysis, February 16, 2017, https://doi.org/10.1002/elan.201700034 Read article

A Plasmonic Coupling Substrate Based on Sandwich Structure of Ultrathin Silica-Coated Silver Nanocubes and Flower-Like Alumina-Coated Etched Aluminum for Sensitive Detection of Biomarkers in Urine

A Plasmonic Coupling Substrate Based on Sandwich Structure of Ultrathin Silica‐Coated Silver Nanocubes and Flower‐Like Alumina‐Coated Etched Aluminum for Sensitive Detection of Biomarkers in Urine

Ag@SiO2/f-Al2O3/e-Al substrate is developed with strong plasmonic coupling of edge–edge orientation within Ag@SiO2 nanocubes. The sandwich structure creates a “multiple light source effect” to enhance efficiency of surface plasmon hotspots and shows a reproducible bifunctionality for detecting creatinine and flavin adenine dinucleotide by surface-enhanced Raman scattering and metal-enhanced photoluminescence.

[Full Paper]
Minh-Kha Nguyen, Wei-Nien Su, Bing-Joe Hwang
Adv. Healthcare Mater., February 02, 2017, https://doi.org/10.1002/adhm.201601290 Read article

A Polymer Interfacial Modifier Synthesized by Living Anionic Polymerization: Incorporation of Inorganic Blocks to Chain Ends

A Polymer Interfacial Modifier Synthesized by Living Anionic Polymerization: Incorporation of Inorganic Blocks to Chain Ends

An interfacial modifier, poly(methyl methacrylate) (PMMA) having inorganic blocks at the chain ends, is prepared by living anionic polymerization. It is preferentially segregated in the mixture of PMMA to regulate the surface wettability and functions, which depend on the fed ratio. The effect of the interfacial modifications is clearly demonstrated in the cell proliferation behaviors on PMMA films.

[Full Paper]
Kentaro Yamamoto, Tomoyasu Hirai, Yukari Oda, Daisuke Kawaguchi, Hisao Matsuno, Keiji Tanaka
Macromol. Chem. Phys., January 25, 2017, https://doi.org/10.1002/macp.201600473 Read article

Effects of Water Intercalation and Tribochemistry on MoS2 Lubricity: An Ab Initio Molecular Dynamics Investigation

Effects of Water Intercalation and Tribochemistry on MoS2 Lubricity: An Ab Initio Molecular Dynamics Investigation

Sliding away: The atomistic mechanisms that govern the observed decrease of lubricating capabilities of MoS2 in humid environments is examined by means of ab initio molecular dynamic calculations.

[Article]
Giacomo Levita, Maria C. Righi
ChemPhysChem, January 09, 2017, https://doi.org/10.1002/cphc.201601143 Read article

Engineering the Fullerene-Protein Interface by Computational Design: The Sum is More than its Parts

Engineering the Fullerene‐Protein Interface by Computational Design: The Sum is More than its Parts

[Full Paper]
Francesco Trozzi, Tainah Dorina Marforio, Andrea Bottoni, Francesco Zerbetto, Matteo Calvaresi
Isr. J. Chem., December 22, 2016, https://doi.org/10.1002/ijch.201600127 Read article

Precise Synthesis and Surface Characterization of End-Functionalized Polystyrene with Perfluoroalkyl Group via Ionic Bond Formation of Diethylamino End-Group with Perfluoroalkylcarboxylic Acid

Precise Synthesis and Surface Characterization of End‐Functionalized Polystyrene with Perfluoroalkyl Group via Ionic Bond Formation of Diethylamino End‐Group with Perfluoroalkylcarboxylic Acid

Well-defined polystyrene end-functionalized with N,N-diethylamino group is prepared by a living anionic polymerization and applied for the ionic bond formation with C8F17COOH. The ionic-bonded C8F17 group segregates at the top of film surface and can be removed by soaking in methanol. Moreover, the group that remained inside appears at the film surface by annealing, suggesting the surface reconstruction by environmental changes.

[Full Paper]
Kenji Sugiyama, Takeshi Yamada
Macromol. Chem. Phys., December 08, 2016, https://doi.org/10.1002/macp.201600444 Read article

Bacterial Interactions with Immobilized Liquid Layers

Bacterial Interactions with Immobilized Liquid Layers

The number of bacterial cells adherent on an immobilized liquid layer of silicone oil is significantly affected by the presence or absence of orbital flow, the species of bacteria, and the bacterial cell morphology. In all tested experimental conditions, however, immobilized liquid layers show superior resistance to irreversible bacterial adhesion compared to equivalent solid polydimethylsiloxane surfaces.

[Full Paper]
Yevgen Kovalenko, Irini Sotiri, Jaakko V. I. Timonen, Jonathan C. Overton, Gareth Holmes, Joanna Aizenberg, Caitlin Howell
Adv. Healthcare Mater., December 08, 2016, https://doi.org/10.1002/adhm.201600948 Read article

First-Principles Study of Perovskite Ultrathin Films: Stability and Confinement Effects

First‐Principles Study of Perovskite Ultrathin Films: Stability and Confinement Effects

[Full Paper]
Marco Arrigoni, Eugene A. Kotomin, Joachim Maier
Isr. J. Chem., November 15, 2016, https://doi.org/10.1002/ijch.201600056 Read article

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