Advanced Materials

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Early View (Online Version of Record published before inclusion in an issue)

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  1. Progress Reports

    1. Smart Gating Multi-Scale Pore/Channel-Based Membranes

      Xu Hou

      Version of Record online: 14 JUN 2016 | DOI: 10.1002/adma.201600797

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      Smart gating membranes are important and promising in membrane science and technology. Rapid progress in developing smart membranes is transforming technology in many different fields, from energy and environmental to the life sciences. How a specific smart behavior for controllable gating of porous membranes can be obtained, especially for nano- and micrometer-sized multi-scale pore/channel-based membrane systems is addressed.

  2. Communications

    1. Metal–Organic Covalent Network Chemical Vapor Deposition for Gas Separation

      Nicolas D. Boscher, Minghui Wang, Alberto Perrotta, Katja Heinze, Mariadriana Creatore and Karen K. Gleason

      Version of Record online: 14 JUN 2016 | DOI: 10.1002/adma.201601010

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      The chemical vapor deposition (CVD) polymerization of metalloporphyrin building units is demonstrated to provide an easily up-scalable one-step method toward the deposition of a new class of dense and defect-free metal–organic covalent network (MOCN) layers. The resulting hyper-thin and flexible MOCN layers exhibit outstanding gas-separation performances for multiple gas pairs.

    2. Highly Conductive, Air-Stable Silver Nanowire@Iongel Composite Films toward Flexible Transparent Electrodes

      Weiwei Xiong, Hongliang Liu, Yongzhen Chen, Meiling Zheng, Yuanyuan Zhao, Xiangbin Kong, Ying Wang, Xiqi Zhang, Xiangyu Kong, Pengfei Wang and Lei Jiang

      Version of Record online: 14 JUN 2016 | DOI: 10.1002/adma.201600358

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      A new type of flexible transparent electrode is designed, by employing wettability-induced selective electroless-welding of silver nanowire (AgNW) networks, together with a thin conductive iongel as the protective layer. The obtained electrode exhibits high optical transmittance, and excellent air-stability without sacrificing conductivity.

    3. Superaerophilic Carbon-Nanotube-Array Electrode for High-Performance Oxygen Reduction Reaction

      Zhiyi Lu, Wenwen Xu, Jun Ma, Yingjie Li, Xiaoming Sun and Lei Jiang

      Version of Record online: 14 JUN 2016 | DOI: 10.1002/adma.201504652

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      A micro-/nanostructured “superaerophilic” electrode constructed by direct growth of cobalt-incorporated and nitrogen-doped carbon-nanotube arrays with subsequent hydrophobic modification is demonstrated for a high-performance oxygen-reduction-reaction electrode, superior to the Pt/C–air electrode. This high performance is attributed to the simultaneously accelerated gas-diffusion and electron-transport processes induced by the unique structural advantages.

    4. Visualizing Light Scattering in Silicon Waveguides with Black-Phosphorus Photodetectors

      Tianjiao Wang, Shuren Hu, Bhim Chamlagain, Tu Hong, Zhixian Zhou, Sharon M. Weiss and Ya-Qiong Xu

      Version of Record online: 14 JUN 2016 | DOI: 10.1002/adma.201506277

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      A black-phosphorus photodetector is utilized to investigate the light-scattering patterns of a silicon waveguide through wavelength- and polarization-dependent scanning photocurrent measurements. The photocurrent signals exhibit similar patterns to the light-intensity distribution of the waveguide calculated by finite-difference time-domain simulations, suggesting that photoexcited electron–hole pairs in the silicon waveguide can be injected into phosphorene to induce its photoresponse.

    5. Construction of 3D Metallic Nanostructures on an Arbitrarily Shaped Substrate

      Fei Chen, Jingning Li, Fangfang Yu, Di Zhao, Fan Wang, Yanbin Chen, Ru-Wen Peng and Mu Wang

      Version of Record online: 13 JUN 2016 | DOI: 10.1002/adma.201602049

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      Constructing conductive/magnetic nanowire arrays with 3D features by electrodeposition remains challenging. An unprecedented fabrication approach that allows to construct metallic (cobalt) nanowires on an arbitrarily shaped surface is reported. The spatial separation of nanowires varies from 70 to 3000 nm and the line width changes from 50 to 250 nm depending on growth conditions.

    6. Self-Junctioned Copper Nanofiber Transparent Flexible Conducting Film via Electrospinning and Electroplating

      Seongpil An, Hong Seok Jo, Do-Yeon Kim, Hyun Jun Lee, Byeong-Kwon Ju, Salem S. Al-Deyab, Jong-Hyun Ahn, Yueling Qin, Mark T. Swihart, Alexander L. Yarin and Sam S. Yoon

      Version of Record online: 13 JUN 2016 | DOI: 10.1002/adma.201506364

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      Self-junctioned copper nanofiber transparent flexible films are produced using electrospinning and electroplating processes that provide high performances of T = 97% and Rs = 0.42 Ω sq−1 by eliminating junction resistance at wire intersections. The film remains conductive after being stretched by up to 770% (films with T = 76%) and after 1000 cycles of bending to a 5 mm radius.

    7. Intelligent Albumin–MnO2 Nanoparticles as pH-/H2O2-Responsive Dissociable Nanocarriers to Modulate Tumor Hypoxia for Effective Combination Therapy

      Qian Chen, Liangzhu Feng, Jingjing Liu, Wenwen Zhu, Ziliang Dong, Yifan Wu and Zhuang Liu

      Version of Record online: 10 JUN 2016 | DOI: 10.1002/adma.201601902

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      A unique type of pH/H2O2 dual-responsive intelligent nanoscale delivery system based on albumin-coated MnO2 is presented, which is capable of modulating the tumor microenvironment (TME) by relieving hypoxia. Additionally, TME-responsive size changes enable effective intratumor diffusion. A highly effective combined photodynamic and chemotherapy is realized with these nanoparticles in a mouse tumor model.

    8. You have full text access to this OnlineOpen article
      Effect of Internal Electric Fields on Charge Carrier Dynamics in a Ferroelectric Material for Solar Energy Conversion

      Madeleine R. Morris, Stephanie R. Pendlebury, Jongin Hong, Steve Dunn and James R. Durrant

      Version of Record online: 9 JUN 2016 | DOI: 10.1002/adma.201601238

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      Spontaneous polarization is shown to enhance the lifetimes of photogenerated species in BaTiO3. This is attributed to polarization-induced surface band bending acting as a thermal barrier to electron/hole recombination. The study indicates that the efficiencies of solar cells and solar fuels devices can be enhanced by the use of ferroelectric materials.

    9. Low-Temperature Chemical Vapor Deposition Synthesis of Pt–Co Alloyed Nanoparticles with Enhanced Oxygen Reduction Reaction Catalysis

      Dong Sung Choi, Alex W. Robertson, Jamie H. Warner, Sang Ouk Kim and Heeyeon Kim

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201600469

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      Novel Pt–Co alloyed nanocatalysts are generated via chemical vapor deposition-assisted facile one-pot synthesis. The method guarantees highly monodisperse Pt–Co alloy nanoparticles with precise control of metallic compositions within 1 at%. A significant features is that a perfectly alloyed single-crystal structure is obtained at temperatures as low as 500 °C, which is much lower than conventional alloying temperatures.

    10. Peapod-Like Carbon-Encapsulated Cobalt Chalcogenide Nanowires as Cycle-Stable and High-Rate Materials for Sodium-Ion Anodes

      Chao Wu, Yu Jiang, Peter Kopold, Peter A. van Aken, Joachim Maier and Yan Yu

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201600964

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      Peapod-like carbon-encapsulated cobalt chalcogenide nanowires are designed and synthesized by a facile method. The nanowires show excellent electrochemical performance for sodium storage, suggesting that chalcogenides, especially selenides, have potential as advanced anodes for sodium-ion batteries.

    11. Unveiling the Switching Riddle of Silver Tetracyanoquinodimethane Towards Novel Planar Single-Crystalline Electrochemical Metallization Memories

      Fangxu Yang, Qiang Zhao, Chunhui Xu, Ye Zou, Huanli Dong, Yonggang Zheng and Wenping Hu

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201600902

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      It is unveiled that the switching riddle of AgTCNQ is caused by the solid electrolyte mechanism. Both factors of bulk phase change and contact issue play key roles in the efficient work of the devices. An effective strategy is developed to locate the formation/disruption of Ag conductive filaments using the planar asymmetric configuration of Au/AgTCNQ/AlOx/Al. These novel electrochemical metallization memories demonstrate many promising properties.

    12. Catalase-Loaded TaOx Nanoshells as Bio-Nanoreactors Combining High-Z Element and Enzyme Delivery for Enhancing Radiotherapy

      Guosheng Song, Yuyan Chen, Chao Liang, Xuan Yi, Jingjing Liu, Xiaoqi Sun, Sida Shen, Kai Yang and Zhuang Liu

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201602111

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      A novel type of bio-nanoreactor with catalase loaded inside TaOx hollow nanoshells is fabricated via a mild one-step method. Such bio-nanoreactors could efficiently improve the tumor oxygenation by supplying oxygen via decomposition of endogenic H2O2 in a tumor microenvironment, and thus synergistically enhance the efficacy of cancer radiotherapy by both depositing radiation energy within the tumor and overcoming hypoxia-induced radiotherapy resistance.

    13. Utilization of Electrochromically Luminescent Transition-Metal Complexes for Erasable Information Recording and Temperature-Related Information Protection

      Kenneth Yin Zhang, Xiaojiao Chen, Guanglan Sun, Taiwei Zhang, Shujuan Liu, Qiang Zhao and Wei Huang

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201601978

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      Transition metal complexes containing pyrazinium or pyridinium moieties display reversible luminescence changes in response to electrical stimuli, which is useful in the development of erasable information recording electric devices. These complexes are also suitable for temperature-related information protection, since chemically-induced luminescence turn-on is temperature-dependent.

    14. Ultrahigh Thermal Conductivity of Interface Materials by Silver-Functionalized Carbon Nanotube Phonon Conduits

      Daewoo Suh, Choong Man Moon, Duckjong Kim and Seunghyun Baik

      Version of Record online: 8 JUN 2016 | DOI: 10.1002/adma.201600642

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      An ultrahigh thermal conductivity (κ = 160 W m−1K−1) of thermal interface materials is achieved with a high enhancement factor (96). A small amount (2.3 vol%) of 1D multiwalled carbon nanotubes (MWNTs) with high κ constructs effective phonon transport pathways between microscale silver-flake islands, and a solid phonon transport junction is realized by the coalescence of silver nanoparticles pre-functionalized on the MWNTs.

    15. Modulate Organic-Metal Oxide Heterojunction via [1,6] Azafulleroid for Highly Efficient Organic Solar Cells

      Chang-Zhi Li, Jiang Huang, Huanxin Ju, Yue Zang, Jianyuan Zhang, Junfa Zhu, Hongzheng Chen and Alex K.-Y. Jen

      Version of Record online: 7 JUN 2016 | DOI: 10.1002/adma.201601161

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      By creating an effective π-orbital hybridization between the fullerene cage and the aromatic anchor (addend), the azafulleroid interfacial modifiers exhibit enhanced electronic coupling to the underneath metal oxides. High power conversion efficiency of 10.3% can be achieved in organic solar cells using open-cage phenyl C61 butyric acid methyl ester (PCBM)-modified zinc oxide layer.

    16. Strong Electron-Deficient Polymers Lead to High Electron Mobility in Air and Their Morphology-Dependent Transport Behaviors

      Yu-Qing Zheng, Ting Lei, Jin-Hu Dou, Xin Xia, Jie-Yu Wang, Chen-Jiang Liu and Jian Pei

      Version of Record online: 7 JUN 2016 | DOI: 10.1002/adma.201600541

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      Planar backbone, locked conformation, and low lowest unoccupied molecular orbital level provide polymer F4BDOPV-2T with ultrahigh electron mobilities of up to 14.9 cm2 V−1 s−1 and good air stability. It is found that the nonlinear transfer curves can be tuned to near-ideal ones by changing fabrication conditions, indicating that film morphology largely contributes to the nonlinear transfer curves in high-mobility conjugated polymers.

  3. Reviews

    1. Multifunctional Nanoparticles Self-Assembled from Small Organic Building Blocks for Biomedicine

      Pengyao Xing and Yanli Zhao

      Version of Record online: 6 JUN 2016 | DOI: 10.1002/adma.201600906

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      Nanoparticles self-assembled from small organic building blocks show a promising application potential for biomedical applications such as cancer theranostics. The dynamic property of rationally designed building blocks enables self-assembled nanoparticles with high performance in biosensors, bioimaging, and drug delivery.

  4. Communications

    1. Band Engineering by Controlling vdW Epitaxy Growth Mode in 2D Gallium Chalcogenides

      Hui Cai, Emmanuel Soignard, Can Ataca, Bin Chen, Changhyun Ko, Toshihiro Aoki, Anupum Pant, Xiuqing Meng, Shengxue Yang, Jeffrey Grossman, Frank D. Ogletree and Sefaattin Tongay

      Version of Record online: 6 JUN 2016 | DOI: 10.1002/adma.201601184

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      Atomically thin quasi-2D GaSe flakes are synthesized via van-der-Waals (vdW) epitaxy on a polar Si (111) surface. The band gap is continuously tuned from its commonly accepted value at 620 down to 700 nm range, which was only attained previously by alloying Te into GaSe (GaSexTe1−x). This is accomplished by manipulating various vdW epitaxy kinetic factors, which allows us to choose between screw-dislocation driven and layer-by-layer growth, and design different morphologies with different material–substrate interaction (strain) energies.

  5. Reviews

    1. Sodium-Oxygen Batteries: A Comparative Review from Chemical and Electrochemical Fundamentals to Future Perspective

      Hossein Yadegari, Qian Sun and Xueliang Sun

      Version of Record online: 3 JUN 2016 | DOI: 10.1002/adma.201504373

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      Various aspects of Na-O2 cell from fundamental (electro)chemistry of sodium and oxygen to the chemical and electrochemical reaction mechanisms of the cell are discussed. Specifically, effects of various factors, e.g. physicochemical and kinetic parameters, humidity, air electrode, binders, electrolyte, and electrocatalysis on the performance of Na-O2 cell are reviewed over the recent studies and future research perspectives are accordingly proposed.

  6. Communications

    1. Piezotronic Effect Modulated Heterojuction Electron Gas in AlGaN/AlN/GaN Heterostructure Microwire

      Xingfu Wang, Ruomeng Yu, Chunyan Jiang, Weiguo Hu, Wenzhuo Wu, Yong Ding, Wenbo Peng, Shuti Li and Zhong Lin Wang

      Version of Record online: 3 JUN 2016 | DOI: 10.1002/adma.201601721

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      The piezotronic effect is applied to modulate the physical properties of heterojunction electron gas and thus tune the electric transport in AlGaN/AlN/GaN heterostructure microwires. At room temperature, the conductance is increased by 165% under −1.78% compressive strains, and reduced by 48% under 1.78% tensile strains; at 77 K, this modulating effect is further improved by 890% and 940% under compressive and tensile strains, respectively.

  7. Reviews

    1. Hierarchical Targeting Strategy for Enhanced Tumor Tissue Accumulation/Retention and Cellular Internalization

      Sheng Wang, Peng Huang and Xiaoyuan Chen

      Version of Record online: 3 JUN 2016 | DOI: 10.1002/adma.201601498

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      Hierarchical targeting, which combines the advantages of both enhanced tumor tissue accumulation/retention and enhanced cellular internalization, is a promising strategy to improve the tumor targeting efficiency of nanoparticles. The different strategies are summarized including the exploitation of changeable particle sizes, switchable surface charges and activatable surface ligands to develop hierarchical targeting nanoplatforms.

  8. Communications

    1. Preparation and Characterization of Newly Discovered Fibrous Aggregates of Single-Walled Carbon Nanohorns

      Ryota Yuge, Fumiyuki Nihey, Kiyohiko Toyama and Masako Yudasaka

      Version of Record online: 25 MAY 2016 | DOI: 10.1002/adma.201602022

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      Fibrous aggregates composed of radially assembled graphene-based single-walled nanotubules are prepared, named here as fibrous aggregates of single-walled carbon nanohorns (fib-CNHs), whose structure resembles that of chenille stems. The newly discovered fib-CNHs are 30–100 nm in diameter and 1–10 μm in length. The fib-CNHs show high dispersibility and conductivity. The fib-CNHs increase the advantages of nanocarbons in various fields.

    2. You have full text access to this OnlineOpen article
      Unraveling Unprecedented Charge Carrier Mobility through Structure Property Relationship of Four Isomers of Didodecyl[1]benzothieno[3,2-b][1]benzothiophene

      Yusuke Tsutsui, Guillaume Schweicher, Basab Chattopadhyay, Tsuneaki Sakurai, Jean-Baptiste Arlin, Christian Ruzié, Almaz Aliev, Artur Ciesielski, Silvia Colella, Alan R. Kennedy, Vincent Lemaur, Yoann Olivier, Rachid Hadji, Lionel Sanguinet, Frédéric Castet, Silvio Osella, Dmytro Dudenko, David Beljonne, Jérôme Cornil, Paolo Samorì, Shu Seki and Yves H. Geerts

      Version of Record online: 25 MAY 2016 | DOI: 10.1002/adma.201601285

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      The structural and electronic properties of four isomers of didodecyl[1]-benzothieno[3,2-b][1]benzothiophene (C12-BTBT) have been investigated. Results show the strong impact of the molecular packing on charge carrier transport and electronic polarization properties. Field-induced time-resolved microwave conductivity measurements unravel an unprecedented high average interfacial mobility of 170 cm2 V−1 s−1 for the 2,7-isomer, holding great promise for the field of organic electronics.

    3. Near Room-Temperature Memory Devices Based on Hybrid Spin-Crossover@SiO2 Nanoparticles Coupled to Single-Layer Graphene Nanoelectrodes

      Anastasia Holovchenko, Julien Dugay, Mónica Giménez-Marqués, Ramón Torres-Cavanillas, Eugenio Coronado and Herre S. J. van der Zant

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/adma.201600890

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      The charge transport properties of SCO [Fe(Htrz)2(trz)](BF4) NPs covered with a silica shell placed in between single-layer graphene electrodes are reported. A reproducible thermal hysteresis loop in the conductance above room-temperature is evidenced. This bistability combined with the versatility of graphene represents a promising scenario for a variety of technological applications but also for future sophisticated fundamental studies.

  9. Research News

    1. Albumin Carriers for Cancer Theranostics: A Conventional Platform with New Promise

      Qian Chen and Zhuang Liu

      Version of Record online: 25 APR 2016 | DOI: 10.1002/adma.201600038

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      Albumin, in addition to its applications as conventional drug carriers, can also serve as the building block in the construction of multifunctional nanoplatforms with integrated imaging and therapy functions. Very recent progress, mainly in the past two years, regarding the development of albumin-based multifunctional nanotheranostics is discussed.

  10. Book Reviews

    1. Microemulsions

      Dr. Dominic Walsh

      Version of Record online: 3 SEP 2009 | DOI: 10.1002/adma.200901360

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