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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A visible light-responsive multilayer system, with an azo-containing polymer film as the intermediate layer has been developed for the controlled fabrication of the hierarchically patterned surfaces. It is based on the combined strategy of surface wrinkling with visible light irradiation. This study offers a new avenue to create micro/nano patterned surfaces on diverse functional films based on the stimuli-responsive wrinkling-based adaptive system.
Chuanyong Zong, Yan Zhao, Haipeng Ji, Jixun Xie, Xue Han, Juanjuan Wang, Yanping Cao, Conghua Lu, Hongfei Li, Shichun Jiang
Macromol. Rapid Commun., June 23, 2016, DOI: 10.1002/marc.201600229. Read article
A novel reverse transfection platform, which embraces a wrinkled-surface, is developed for highly efficient long-term gene delivery. Since reverse transfection utilizes the contact between cell and substrate, the increase in the contact area between substrate and cells significantly increases the gene delivery rate. Furthermore, by adopting microwell structures, multiplex, addressable delivery of exogenous materials is successfully demonstrated.
Hyunwoo Joo, Jisoo Shin, Seung-Woo Cho, Pilnam Kim
Adv. Healthcare Mater., June 23, 2016, DOI: 10.1002/adhm.201600354. Read article
This paper reviews recent development of colloidal crystal masks and applications of typical structures fabricated by colloidal lithography in plasmonics, wettability, biology, solar cells and etc., aiming at inspiration of ingenious combination of colloidal technique with practical applications.
Bin Ai, Helmuth Möhwald, Dayang Wang, Gang Zhang
Adv. Mater. Interfaces, June 22, 2016, DOI: 10.1002/admi.201600271. Read article
The layered structures of thin organic films used in organic light-emitting diodes are investigated using neutron reflectometry while under thermal stress. In all cases, diffusion between layers is observed. The onset of diffusion is mediated by the glass transition temperature (Tg) of the materials in the film, with the lowest Tg material initiating the diffusion process.
Jake A. McEwan, Andrew J. Clulow, Paul E. Shaw, Andrew Nelson, Tamim A. Darwish, Paul L. Burn, Ian R. Gentle
Adv. Mater. Interfaces, June 22, 2016, DOI: 10.1002/admi.201600184. Read article
A pronounced chemical redox reaction at an NiOnc-perovskite heterojunction to form the hole-dopant CH3NH3PbI3–2δOδ is determined. This interfacial hole-doping CH3NH3PbI3–2δOδ and NiOnc exhibits superior electronic properties to bring about the energy matching of NiOnc/perovskite interface and enable faster hole transport.
Ming-Wei Lin, Kuo-Chin Wang, Jeng-Han Wang, Ming-Hsien Li, Yu-Ling Lai, Takuji Ohigashi, Nobuhiro Kosugi, Peter Chen, Der-Hsin Wei, Tzung-Fang Guo, Yao-Jane Hsu
Adv. Mater. Interfaces, June 22, 2016, DOI: 10.1002/admi.201600135. Read article
Neural tissue engineering provides a new approach for treating neurodegenerative disease. An innovative method using surface patterning of a thermoresponsive culture substrate and coculture of neurons with patterned astrocytes produces tubular neural tissue constructs without the use of scaffolds. Through a thermally induced harvesting process, neuron bundles can be laid out in any desired pattern within a 3D tissue construct.
Hironobu Takahashi, Kazuyoshi Itoga, Tatsuya Shimizu, Masayuki Yamato, Teruo Okano
Adv. Healthcare Mater., June 22, 2016, DOI: 10.1002/adhm.201600197. Read article
A facile methodology for the fabrication of surfaces with extreme wettabilities is discussed. Open-channel, paper-based microfluidic devices fabricated using these surfaces with extreme wettabilities allow for the localization, manipulation, and transport of virtually all high- and low-surface-tension liquids. This advance enables novel applications never before considered in open-channel microfluidics, including oil–water separation, liquid–liquid extraction, and microfluidic emulsification.
Chao Li, Mathew Boban, Sarah A. Snyder, Sai P. R. Kobaku, Gibum Kwon, Geeta Mehta, Anish Tuteja
Adv. Funct. Mater., June 22, 2016, DOI: 10.1002/adfm.201601821. Read article
An interfacial etching approach is developed for the synthesis of highly monodisperse and ultrasmall thiolated palladium nanoclusters (Pd NCs, 1.1±0.1 nm) using Zr-UiO-66-NH2 metal–organic frameworks (MOFs) as sacrificial templates. The Pd NCs size can be tuned by using MOF templates with different cavity sizes. The Pd NCs displayed activity in the Suzuki–Miyaura coupling reaction.
Xinle Li, Tian Wei Goh, Chaoxian Xiao, Alexandria L. D. Stanton, Yuchen Pei, Prashant K. Jain, Wenyu Huang
ChemNanoMat, June 20, 2016, DOI: 10.1002/cnma.201600121. Read article
Breaking out of established patterns: A facile strategy is demonstrated to generate protein and cellular patterns without employing a backfilling process using an activated, non-biofouling copolymer film grafted from gold surfaces by surface-initiated controlled radical polymerization.
Bong Soo Lee, Juno Lee, Gyeongyeop Han, EunRae Ha, Insung S. Choi, Jungkyu K. Lee
Chem. Asian J., June 20, 2016, DOI: 10.1002/asia.201600585. Read article
Liquid interfaces: For a full understanding of the ion transfer during solvent extraction knowledge about the extractant and ion distributions across the water–oil interface is necessary. The extractant and ion distributions at the water–oil interface were studied by X-ray and neutron reflectivity measurements for two different diamide extractants (see picture).
Ernesto Scoppola, Erik B. Watkins, Richard A. Campbell, Oleg Konovalov, Luc Girard, Jean-Francois Dufrêche, Geoffroy Ferru, Giovanna Fragneto, Olivier Diat
Angew. Chem. Int. Ed., June 20, 2016, DOI: 10.1002/anie.201603395. Read article
Self-assembled alumina-capped Ag particles, acting as “pinning points”, and unalloyed Ag particles are mixed together to form a mosaic structure, which can contribute to the excellent thermal tolerance of a new type solar absorber. Through a low-temperature pretreatment in air, this absorber exhibits desirable stability even after annealing at 500 °C for 1002 h.
Junhua Gao, Xiaoyu Wang, Bing Yang, Chengjun Tu, Lingyan Liang, Hongliang Zhang, Fei Zhuge, Hongtao Cao, Yousheng Zou, Ke Yu, Fei Xia, Yingying Han
Adv. Mater. Interfaces, June 20, 2016, DOI: 10.1002/admi.201600248. Read article
The mask-free patterning technique is employed to fabricate arrays of MoS2 and WS2 structures on silicon and graphene substrates with quality interfaces. By depositing precursor inks with the AFM cantilevers and subsequent heat treatment in the CVD furnace, it is demonstrated that MoS2 and WS2 structures can be formed on graphene surfaces at predefined device architectures.
Rui Dong, Logan Moore, Leonidas E. Ocola, Irma Kuljanishvili
Adv. Mater. Interfaces, June 20, 2016, DOI: 10.1002/admi.201600098. Read article
A dual responsive surface is constructed on hydrophilic polymer brushes to modulate cell migration ability on demand. The responsibility is based on the dynamic host–guest interaction between β-CD and azobenzene. Both competitive guest molecules and UV radiation are able to release azobenzene-REDV from the substrate, weakening the cell–substrate interaction and modulating the cell migration rate.
Tanchen Ren, Yelin Ni, Wang Du, Shan Yu, Zhengwei Mao, Changyou Gao
Adv. Mater. Interfaces, June 20, 2016, DOI: 10.1002/admi.201500865. Read article
The response of progenitor neural stem cells to dense high aspect ratio polymer pillars on the nano- and microscale is investigated. Cells on the nanotopography show large cell spread area, high random migration dynamics, and high traction forces. Cells on the microtopography show a confined cell spread with large topographical insertions, persistent quasi-directional migration, and large traction forces.
Felipe Viela, Daniel Granados, Angel Ayuso-Sacido, Isabel Rodríguez
Adv. Funct. Mater., June 20, 2016, DOI: 10.1002/adfm.201601817. Read article
Rapid versus slow synthesis: The effect of tin (Sn4+) modification on the surface of hematite electrodes synthesized by an aqueous solution route for different times is investigated. This modification results in changes to wettability and an enhancement of the photocurrent response for all hematite electrodes investigated (see figure).
Waldemir M. Carvalho, Flavio L. Souza
ChemPhysChem, June 17, 2016, DOI: 10.1002/cphc.201600316. 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
Here, we report hydrogen peroxide generation at 2-nitrophenyloctyl ether (NPOE)-water interface with decamethylferrocene as an electron donor. The progress of this reaction was detected by the observation of color change of the organic and aqueous phases in series of shake-flask experiments. The shape change of cyclic voltammograms recorded at carbon paste electrode with decamethylferrocene solution in NPOE also indicates (electro)catalytic reaction. Hydrogen peroxide was electrochemically detected at Pt microelectrode tip positioned in front of carbon paste electrode. For this purpose, scanning electrochemical microscopy (SECM) approach curves were recorded. Analogous experiments demonstrated the possibility of electrochemical regeneration of the electron donor. The (electro)catalytic effect of MoS2 on hydrogen peroxide generation was found by both shake-flask and SECM experiments.
Justyna Jedraszko, Olga Krysiak, Wojciech Adamiak, Wojciech Nogala, Hubert Girault, Marcin Wojciech Opallo
ChemElectroChem, June 15, 2016, DOI: 10.1002/celc.201600242. Read article
Moldable superhydrophobic surfaces are produced by freely covering a solid surface with specifically designed microcapsules. Owing to the presence of Fe-particles within the former microcapsules, they can be temporarily fixed on different substrates using a permanent magnet. Such systems are prospective candidates for the fabrication of water/oil repellent surfaces, liquid marbles, or microfluidic channels and as templates for microspheres fabrication.
Ana M. S. Costa, Nadya V. Dencheva, Sofia G. Caridade, Zlatan Z. Denchev, João F. Mano
Adv. Mater. Interfaces, June 15, 2016, DOI: 10.1002/admi.201600074. Read article
Repeat RNA Binding: Structure-binding studies of a series of naphthyridine-azaquinolone derivatives are described. NBzA with the tricyclic system of benzoazaquinolone induced a more extensive conformational change on the CAG repeat. The linker structure in NA and NBzA was suitable for the binding to CAG DNA and RNA, and the tricyclic benzoazaquinolone did not interfere with the binding.
Jinxing Li , Akihiro Sakata, Hanping He, Li-Ping Bai, Asako Murata, Chikara Dohno, Kazuhiko Nakatani
Chem. Asian J., June 14, 2016, DOI: 10.1002/asia.201600527. Read article
Strongly coupled gold hole arrays and J-aggregate molecules form a hybrid system that can be tuned to the strongest possible coupling regime. Transient absorption spectra show two distinctive, period-independent bleaching bands, as a clear indicator of the hybrid exciton–plasmon state. These states show a remarkably long lifetime, corresponding to the presence of a trap state.
Hai Wang, Hai-Yu Wang, Angelo Bozzola, Andrea Toma, Simone Panaro, Waseem Raja, Alessandro Alabastri, Lei Wang, Qi-Dai Chen, Huai-Liang Xu, Francesco De Angelis, Hong-Bo Sun, Remo Proietti Zaccaria
Adv. Funct. Mater., June 10, 2016, DOI: 10.1002/adfm.201601452. Read article
Cotton fabrics with hierarchical structures are developed by mimicking the fine morphology of fish scale. The developed materials can separate a wide range of commercial oily products from oil–water mixtures, with separation efficiencies more than 99% in a gravity-driven filtration operation, and provide a simple solution for environmental remediations, including cleanup of oil spills, fuel purification, and wastewater treatment.
Masud Rana, Jun-Teng Chen, Sudong Yang, Peng-Cheng Ma
Adv. Mater. Interfaces, June 09, 2016, DOI: 10.1002/admi.201600128. Read article
A top-down strategy to construct various hollow metal–organic frameworks (MOFs) is reported via synergistic etching and surface functionalization by using phenolic acid. Simultaneous surface modification not only allows precise etching inside the MOFs, but also results in a metal–phenolic coating on the MOFs. The metal–phenolic coating endows the MOFs with near infrared laser responsiveness.
Ming Hu, Yi Ju, Kang Liang, Tomoya Suma, Jiwei Cui, Frank Caruso
Adv. Funct. Mater., June 09, 2016, DOI: 10.1002/adfm.201601193. Read article
A bi-functional layer based on hydrophobic ligand capped FeS2 nanoparticles is an outstanding inorganic hole transporting materials (HTMs) for perovskite solar cells (PSCs). PSCs with FeS2 bi-functional layer show high photovoltaic performance and improved long-term stability because HTMs based on FeS2 have excellent hole transport ability and moisture-proof performance. Our approach will contribute to reliability improvement of PSCs.
Bonkee Koo, Heesuk Jung, Minwoo Park, Jae-Yup Kim, Hae Jung Son, Jinhan Cho, Min Jae Ko
Adv. Funct. Mater., June 09, 2016, DOI: 10.1002/adfm.201601119. Read article
A 2D array of electronically coupled quantum boxes is fabricated by means of on-surface self-assembly assuring ultimate precision of each box. The quantum states embedded in the boxes are configured by adsorbates, whose occupancy is controlled with atomic precision. The electronic interbox coupling can be maintained or significantly reduced by proper arrangement of empty and filled boxes.
Sylwia Nowakowska, Aneliia Wäckerlin, Ignacio Piquero-Zulaica, Jan Nowakowski, Shigeki Kawai, Christian Wäckerlin, Manfred Matena, Thomas Nijs, Shadi Fatayer, Olha Popova, Aisha Ahsan, S. Fatemeh Mousavi, Toni Ivas, Ernst Meyer, Meike Stöhr, J. Enrique Ortega, Jonas Björk, Lutz H. Gade, Jorge Lobo-Checa, Thomas A. Jung
Small, June 08, 2016, DOI: 10.1002/smll.201600915. Read article
Ag fractals on porous TiO2 matrix, emerged from a sputtered Ag:TiO2 nanocomposite thin film, after annealing at 500 °C. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim)
Ag:TiO2 nanocomposite thin films were prepared by magnetron sputtering and the mechanism associated to the formation of dendrite-type fractals was found to be controlled by diffusion-limited-aggregation of Ag atoms, promoted by a thermal annealing. The fractal structures that were formed became surrounded by a porous TiO2 matrix, and are expected to find important applications in surface enhanced spectroscopies and plasmonic sensing.
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J. Borges, M. S. Rodrigues, C. Lopes, D. Costa, A. Ferreira, R. M. S. Pereira, M. F. Costa, M. I. Vasilevskiy, F. Vaz
Phys. Status Solidi RRL, June 07, 2016, DOI: 10.1002/pssr.201600131. Read article
Single-molecule AFM studies reveal that 3,4-dihydroxyphenylalanine (DOPA) can bind to different rutile TiO2 crystal surfaces, namely, (110), (011), (111), and (100). The different binding modes are discussed.
Yiran Li, Huanyu Liu, Tiankuo Wang, Meng Qin, Yi Cao, Wei Wang
ChemPhysChem, June 07, 2016, DOI: 10.1002/cphc.201600374. 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
Polyamidoamine (PAMAM)-conjugated alumina nanotubes are examined as novel potential nanomaterials for drug delivery, using three model therapeutic compounds. The PAMAM-conjugated material shows enhanced drug loading and releasing performances compared to pristine nanotubes.
Cristian H. Campos, Carola F. Díaz, José L. Guzmán, Joel B. Alderete, Cecilia C. Torres, Verónica A. Jiménez
Macromol. Chem. Phys., June 03, 2016, DOI: 10.1002/macp.201600136. Read article
A high-performance SERS substrate was fabricated by combining electro-oxidative lithography and self-assembly procedures. High SERS enhancement factors of 5×106 with good reproducibility were achieved by the interparticle and the intercluster plasmon coupling of the Au nanoparticle cluster arrays.
He Liu, Almut M. Schwenke, Florian Kretschmer, Stephanie Hoeppener, Ulrich S. Schubert
ChemNanoMat, June 03, 2016, DOI: 10.1002/cnma.201600063. Read article
A novel surface enhanced Raman scattering substrate based on bacterial nanocellulose film that offers a high density of nanostructures and low surface roughness leading to excellent uniformity is demonstrated. Owing to the flexibility of the BNC film, the novel SERS substrate can be used as a swab to collect, detect, and identify bacteria on real-world surfaces.
Limei Tian, Qisheng Jiang, Keng-Ku Liu, Jingyi Luan, Rajesh R. Naik, Srikanth Singamaneni
Adv. Mater. Interfaces, June 03, 2016, DOI: 10.1002/admi.201600214. Read article
Sebastian Watzele, Aliaksandr S. Bandarenka
Electroanalysis, June 01, 2016, DOI: 10.1002/elan.201600178. Read article
Halogenated amino acids within the naphthalenediimide (NDI) moieties can positively influence the degree of surface binding when designing functional nanomaterials. The noncovalent functionalization of planar carbon systems such as thermally reduced graphene oxide and coronene by using amino acid tagged NDIs is reported here and its potential as a prostate cancer bioimaging agent investigated via fluorescence microscopy, UV–vis, fluorescence spectroscopy, NMR, CD, TCSPC, SEM, TEM, and EDX.
James A. Tyson, Vincenzo Mirabello, David G. Calatayud, Haobo Ge, Gabriele Kociok-Köhn, Stanley W. Botchway, G. Dan Pantoş, Sofia I. Pascu
Adv. Funct. Mater., June 01, 2016, DOI: 10.1002/adfm.201601123. Read article
At the interface: A facile and cost-effective method is demonstrated to improve graphene oxide (GO) dispersion and interface quality in an epoxy matrix by simultaneously functionalizing and reducing GO by covalently grafting organic aminopropyl-functionalized nanosilica sols (OAS). The covalent functionalization of GO with OAS makes the hydrophilic GO become hydrophobic and provides the active sites that allow linking between the graphene-based sheets and the epoxy matrix, which ensures improved thermal conductivity and mechanical properties.
Jifang Fu, Peisong Zong, Liya Chen, Xing Dong, Dapeng Shang, Wenqi Yu, Liyi Shi, Wei Deng
ChemNanoMat, May 31, 2016, DOI: 10.1002/cnma.201600131. Read article
Monodispersed Li4Ti5O12 (LTO) nanoparticles were prepared with precise control of the particle size between 30–50 nm throughout the synthesis process. The as-prepared LTO electrodes demonstrated high rate performance and outstanding cyclability, which benefits from the preserved well-controlled nanoparticle size and morphology.
Yunchao Li, Guoyi Fu, Mark Watson, Stephen Harrison, M. Parans Paranthaman
ChemNanoMat, May 31, 2016, DOI: 10.1002/cnma.201600106. Read article
Be flexible! The temporal stability of metal-chloride doping of graphene is investigated. Doping graphene and thereby decreasing its sheet resistance is a key step to make use of it in flexible electronics. The temporal evolution of the electrical resistance as a function of metal chloride exposureare investigated herein.
Moon H. Kang, William I. Milne, Matthew T. Cole
ChemPhysChem, May 30, 2016, DOI: 10.1002/cphc.201600260. Read article
SERS on nanoparticles: Monte Carlo simulations of positively charged dopamine adsorbed to semiconducting metal oxide clusters in a solvent are performed to elucidate the role of the solvent in charge transfer and, consequently, in surface-enhanced Raman scattering.
Yoelvis Orozco-Gonzalez, Pilarisetty Tarakeshwar, Sylvio Canuto, Vladimiro Mujica
ChemPhysChem, May 30, 2016, DOI: 10.1002/cphc.201600164. Read article
Trending: Nanocrystalline molybdenum carbide is modified with metal nanoparticles for potential replacement of bulk platinum in water electrolyzers. The activity trends for alkaline and acid hydrogen evolution reactions (HERs) are established and compared to the trends predicted by the DFT calculated hydrogen binding energy. The effects of Pt on passivated versus non-passivated carbide surfaces on the HER activity is also demonstrated.
Qian Zhang, Brian M. Tackett, Qiyuan Wu, Jingguang G. Chen
ChemElectroChem, May 30, 2016, DOI: 10.1002/celc.201600171. Read article
A large, flexible metasurface with arbitrary designed iridescent patterns is developed. Such naked-eye recognizable patterns on flexible films lead to new functionalities and novel applications thanks to the excellent plasmonic properties. Non-invasive SERS sensing, reflective displays, and information encryption are all demonstrated as novel applications of these low-cost metafilms.
Xiangjiang Liu, Jiajun Wang, Longhua Tang, Lijuan Xie, Yibin Ying
Adv. Funct. Mater., May 30, 2016, DOI: 10.1002/adfm.201601154. Read article
Inspired by the concept of sacrificial bond, a strong yet sacrificial interface composed of metal–ligand coordination bonds is constructed in the rubber/graphene composite. The strong interface ensures a high efficient stress transfer meanwhile it is sacrificial during stretching, which dissipates enormous energy. As a result, the composite exhibits a combination of high strength and high toughness.
Jing Huang, Zhenghai Tang, Zhijun Yang, Baochun Guo
Macromol. Rapid Commun., May 27, 2016, DOI: 10.1002/marc.201600226. Read article
When an external electric field is applied to a bilayer junction of La0.7Ca0.3MnO3 (LCMO) and PrBa2Cu3O7 (PBCO), it alters the positions of the Mn atoms at the LCMO/PBCO interface, turning On/Off a magnetic dead layer (MDL). The switching of MDL causes memristive hysteresis in the LCMO/PBCO bilayer junction.
Xiao Shen, Timothy J. Pennycook, David Hernandez-Martin, Ana Pérez, Yevgeniy S. Puzyrev, Yaohua Liu, Suzanne G. E. te Velthuis, John W. Freeland, Padraic Shafer, Chenhui Zhu, Maria Varela, Carlos Leon, Zouhair Sefrioui, Jacobo Santamaria, Sokrates T. Pantelides
Adv. Mater. Interfaces, May 27, 2016, DOI: 10.1002/admi.201600086. Read article
Membranes of cross-linked Au Nanoparticles (NPs) are assembled at an oil–water interface during the coalescence phase. Owing to the decreasing surface available, Au NPs are driven to pack and form a membrane, constituted of one or a few monolayers, which spans over square centimeters. The process is compatible with the coassembly of other nanosized objects, as demonstrated with carbon nanotubes.
Benjamin Le Ouay, Stefan Guldin, Zhi Luo, Sergio Allegri, Francesco Stellacci
Adv. Mater. Interfaces, May 25, 2016, DOI: 10.1002/admi.201600191. Read article
Cardiac diseases are the most prevalent causes of mortality in the world. Cell-based transplanting and tissue engineering have gained significant attention for cardiac therapy. In this article, we explore tissue engineering strategies, which have emphasized on the use of nano-enabled approaches (e.g. nanoparticles, nanotopographies) in combination with stem cells for regeneration and repair of injured myocardium upon myocardial infarction (MI).
Mahshid Kharaziha, Adnan Memic, Mohsen Akbari, David A. Brafman, Mehdi Nikkhah
Adv. Healthcare Mater., May 19, 2016, DOI: 10.1002/adhm.201600088. Read article
A novel percolative nanocomposite with super-high permittivity and supressed dielectric loss is achieved, which is due to the hierarchical interfaces induced by BaSrTiO3 nanocuboid dotted graphene sheets and further modification of dapamine.
Hang Luo, Kechao Zhou, Christopher Bowen, Fuqiang Zhang, Anqi Wei, Zhong Wu, Chao Chen, Dou Zhang
Adv. Mater. Interfaces, May 18, 2016, DOI: 10.1002/admi.201600157. Read article
Photoreactive polymer systems are synthesized from a commercially available polyether via polymer analogous introduction of benzophenone moieties. The obtained polymers are able to create surface-attached polymer networks upon brief UV irradiation via C,H insertion crosslinking. The BP-modified polymers can serve as negative photo-resists which allow in a very simple manner the generation of relief structures on various substrates, even on chemically rather inert polymer substrates such as polyolefins.
Anne-Katrin Schuler, Oswald Prucker, Jürgen Rühe
Macromol. Chem. Phys., May 17, 2016, DOI: 10.1002/macp.201600065. Read article
Reverse micelles: At low water content, incorporation of tri-n-octyl phosphine oxide (TOPO) in sodium 1,4-bis-2-ethylhexylsulfosuccinate (AOT) reverse micelles causes a progressive decrease in the mixed interfacial micropolarity, the hydrogen-bond donor capability of water, and the “bulk-like” water formation (see figure; QB=1-methyl-8-oxyquinolinium betaine).
Emmanuel Odella, R. Darío Falcone, Juana J. Silber, N. Mariano Correa
ChemPhysChem, May 13, 2016, DOI: 10.1002/cphc.201600216. Read article
Single-crystalline W-doped VO2 nanobeams are obtained via rolling from a 2D precursor, exhibiting uniform tungsten doping, a low transition temperature and dual surface plasmon resonance peaks.
Ning Wang, Martial Duchamp, Can Xue, Rafal E. Dunin-Borkowski, Guowei Liu, Yi Long
Adv. Mater. Interfaces, May 11, 2016, DOI: 10.1002/admi.201600164. Read article
Self-assembling of monolayer has been used to include a nitronyl-nitroxide radical in organic spin-valves demonstrating that the presence of the molecular paramagnetic layer does not hamper the observation of a significant magnetoresistance that is altered by a spin filtering exerted by this engineered spinterface.
Lorenzo Poggini, Giuseppe Cucinotta, Abdul-Muizz Pradipto, Marco Scarrozza, Paolo Barone, Andrea Caneschi, Patrizio Graziosi, Marco Calbucci, Raimondo Cecchini, Valentin Alek Dediu, Silvia Picozzi, Matteo Mannini, Roberta Sessoli
Adv. Mater. Interfaces, May 06, 2016, DOI: 10.1002/admi.201500855. Read article
Surfaces of variable atom transfer radical polymerization (ATRP) initiator density can be prepared by self-initiated photografting polymerization, as indicated by dry graft layer thickness following ATRP. The technique requires only UV light and an ATRP initiator monomer to enable coupling, and the presence of a diluent monomer to provide density control.
Katie E. Styan, Christopher D. Easton, Lucy G. Weaver, Laurence Meagher
Macromol. Rapid Commun., May 04, 2016, DOI: 10.1002/marc.201600059. Read article
Surface and interface effects can virtually split a conjugated polymer thin film into vertically heterogeneous layers, each having different thermal and structural properties, leading to the deviations of these properties near surface and interface regions compared to those in the bulk of the film, and consequently affecting electronic properties of the thin film.
Hui Qin, Dan Liu, Tao Wang
Adv. Mater. Interfaces, May 04, 2016, DOI: 10.1002/admi.201600084. Read article
Reduced graphene oxide gel (femtogel) is fabricated using pulsed laser ablation in liquid. This novel technique involves focusing femtosecond laser pulses at the air/liquid interface of a high concentration single-flake aqueous graphene oxide solution. The hydroxyl groups, carbonyl groups, and water molecules are removed to facilitate the gel formation. The gel properties can be tuned by controlling the processing parameters.
Khaled H. Ibrahim, Mehrdad Irannejad, Mojtaba Hajialamdari, Ali Ramadhan, Kevin P. Musselman, Joseph Sanderson, Mustafa Yavuz
Adv. Mater. Interfaces, May 04, 2016, DOI: 10.1002/admi.201500864. Read article
Reentrant spin glass state with enhanced ferromagnetism is observed in ultrathin manganite/cuprate superlattices made of ferromagnetic La0.7Sr0.3MnO3 and antiferromagnetic La2CuO4. The evolution of the rich magnetic properties is attributed to the competition between multiple energetic ground states at the interfaces, which is confirmed by first-principles calculations.
Junfeng Ding, Fabrizio Cossu, Oleg I. Lebedev, Yuqin Zhang, Zhidong Zhang, Udo Schwingenschlögl, Tom Wu
Adv. Mater. Interfaces, May 04, 2016, DOI: 10.1002/admi.201500676. Read article
Engineering interfaces of distinct extracellular compartments mimicking native tissues are key for in-depth in vitro studies on developmental and disease processes in biology and medicine. Sharp interfaces of extracellular matrices are constructed based on fibrillar collagen I networks with a multiparameter control of topology, mechanics, and composition, and their distinct impact on triggering the directionality of cancer cell migration is demonstrated.
Jiranuwat Sapudom, Stefan Rubner, Steve Martin, Tilo Pompe
Adv. Healthcare Mater., April 29, 2016, DOI: 10.1002/adhm.201600295. Read article
Harsh reality: The modification of electrodes with carbon nanotubes (CNTs) is currently employed in numerous applications as a way to improve their performance. Here, the effects of harsh (hno3) and mild (h2o2) oxidative treatments of CNTs are highlighted. Depending on the oxidative route, their electrochemical performances are indubitably different.
Rui Gusmão, Zdeněk Sofer, Michal Nováček, Martin Pumera
ChemElectroChem, April 27, 2016, DOI: 10.1002/celc.201600082. Read article
Mixed-matrix membranes (MMMs) were developed to overcome the limitations of polymeric and inorganic membranes and are regarded as state-of-the-art polymer-inorganic hybrids. Potential applications of layered silicates as inorganic fillers in MMM fabrication for CO2/CH4 separation are reviewed together with challenges for successful formation of layered silicate-based MMMs and future prospects.
Asif Jamil, Oh Pei Ching, Azmi B. M. Shariff
Chem. Eng. Technol., April 5, 2016, DOI: 10.1002/ceat.201500395. 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.
LIB it up: Homogeneous Li4Ti5O12–TiO2 nanoporous composites can be easily fabricated through a nitrogen calcination process. The prepared samples (S-750-N) exhibit high capacity as well as good cycling stability when tested both at room temperature and 55 °C, which provides a novel method for the synthesis of composites used in relevant fields.
Wei Zhang, Zhongyi Liu, Xingcheng Xiao, Dawei Liu
CHEMELECTROCHEM, August 12, 2015, DOI: 10.1002/celc.201500299. 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.