Advanced Materials

Cover image for Vol. 29 Issue 3

January 18, 2017

Volume 29, Issue 3

  1. Cover Picture

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    3. Inside Front Cover
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    5. Back Cover
    6. Masthead
    7. Contents
    8. Progress Reports
    9. Reviews
    10. Communications
    11. Frontispiece
    12. Communications
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      2D Materials: Large-Area and High-Quality 2D Transition Metal Telluride (Adv. Mater. 3/2017)

      Jiadong Zhou, Fucai Liu, Junhao Lin, Xiangwei Huang, Juan Xia, Bowei Zhang, Qingsheng Zeng, Hong Wang, Chao Zhu, Lin Niu, Xuewen Wang, Wei Fu, Peng Yu, Tay-Rong Chang, Chuang-Han Hsu, Di Wu, Horng-Tay Jeng, Yizhong Huang, Hsin Lin, Zexiang Shen, Changli Yang, Li Lu, Kazu Suenaga, Wu Zhou, Sokrates T. Pantelides, Guangtong Liu and Zheng Liu

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770015

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      Two-dimensional tellurides are promising for 2D topological insulators and type-II Weyl semimetals. In article 1603471, J. Lin, G. Liu, Z. Liu, and co-workers report the large-scale growth of large-size and high-quality atomically layered MoTe2 and WTe2, using a chemical vapor deposition (CVD) method. STEM imaging identifies the atomic structures of WTe2 and MoTe2. Electric-transport measurements reveal the semimetal-to-insulator transition in WTe2 and superconductivity in MoTe2.

  2. Inside Front Cover

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    3. Inside Front Cover
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    5. Back Cover
    6. Masthead
    7. Contents
    8. Progress Reports
    9. Reviews
    10. Communications
    11. Frontispiece
    12. Communications
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      Bioprinting: Rapid Continuous Multimaterial Extrusion Bioprinting (Adv. Mater. 3/2017)

      Wanjun Liu, Yu Shrike Zhang, Marcel A. Heinrich, Fabio De Ferrari, Hae Lin Jang, Syeda Mahwish Bakht, Mario Moisés Alvarez, Jingzhou Yang, Yi-Chen Li, Grissel Trujillo-de Santiago, Amir K. Miri, Kai Zhu, Parastoo Khoshakhlagh, Gyan Prakash, Hao Cheng, Xiaofei Guan, Zhe Zhong, Jie Ju, Geyunjian Harry Zhu, Xiangyu Jin, Su Ryon Shin, Mehmet Remzi Dokmeci and Ali Khademhosseini

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770016

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      A novel extrusion bioprinting system capable of individually and/or simultaneously depositing multiple different materials through a digitally tunable pneumatic system is developed by Y. S. Zhang, A. Khademhosseini, and co-workers as described in article 1604630. The integration of a single-printhead setup eliminates the need of physical nozzle switches, allowing for rapid and continuous fabrication of multicomponent structures.

  3. Inside Back Cover

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    10. Communications
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      Supercapacitors: Stacked-Layer Heterostructure Films of 2D Thiophene Nanosheets and Graphene for High-Rate All-Solid-State Pseudocapacitors with Enhanced Volumetric Capacitance (Adv. Mater. 3/2017)

      Zhong-Shuai Wu, Yijun Zheng, Shuanghao Zheng, Sen Wang, Chenglin Sun, Khaled Parvez, Taichi Ikeda, Xinhe Bao, Klaus Müllen and Xinliang Feng

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770020

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      Stacked-layer heterostructure films of 2D thiophene nanosheets and graphene are constructed by Z.-S. Wu, K. Müllen, X. L. Feng, and co-workers, as described in article 1602960 for ultrahigh-rate all-solid-state flexible planar micro-supercapacitors with superior volumetric capacitance and ultrahigh scan rate due to the synergetic effect of the ultrathin pseudocapacitive thiophene nanosheets and the capacitive graphene.

  4. Back Cover

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      Semiconductors: Light-Steered Isotropic Semiconductor Micromotors (Adv. Mater. 3/2017)

      Chuanrui Chen, Fangzhi Mou, Leilei Xu, Shaofei Wang, Jianguo Guan, Zunpeng Feng, Quanwei Wang, Lei Kong, Wei Li, Joseph Wang and Qingjie Zhang

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770021

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      In article 1603374, J. Guan, Q. Zhang, and co-workers from Wuhan University of Technology, China develop a new series of intelligent photoresponsive isotropic semiconductor micromotors by taking advantage of the limited penetration depth of light to induce asymmetrical surface chemical reactions. Independent of their Brownian motion, the as-proposed isotropic micromotors are able to continuously move with both motion direction and speed only controlled by illuminated light, and precise manipulation of particles for nanoengineering is possible.

  5. Masthead

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      Masthead: (Adv. Mater. 3/2017)

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770018

  6. Contents

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      Contents: (Adv. Mater. 3/2017)

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770017

  7. Progress Reports

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    1. Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components

      Tran Quang Trung and Nae-Eung Lee

      Version of Record online: 14 NOV 2016 | DOI: 10.1002/adma.201603167

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      Stretchable electronic devices based on stretchable components with intrinsic stretchability have significant advantages over other strategies including a simple fabrication process, high integrity of stacked layers, and low cost. Recent developments in methodologies and fabrication processes to fabricate stretchable devices with intrinsically stretchable components, which are of interest in many exciting next-generation applications, such as e-skin, personal healthcare, robotics, and human–machine interfaces, are reviewed.

  8. Reviews

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    12. Communications
    1. Recent Progress in Ionic Iridium(III) Complexes for Organic Electronic Devices

      Dongxin Ma, Taiju Tsuboi, Yong Qiu and Lian Duan

      Version of Record online: 21 NOV 2016 | DOI: 10.1002/adma.201603253

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      Ionic iridium(III) complexes show high promise for organic electronic devices owing to their excellent luminescence of virtually all colors. Recent progress on material design, characterization, and applications of ionic iridium(III) complexes is highlighted, pointing out their great potential for future organic displays, lighting, and data record storage.

  9. Communications

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    8. Progress Reports
    9. Reviews
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    12. Communications
    1. Large-Area and High-Quality 2D Transition Metal Telluride

      Jiadong Zhou, Fucai Liu, Junhao Lin, Xiangwei Huang, Juan Xia, Bowei Zhang, Qingsheng Zeng, Hong Wang, Chao Zhu, Lin Niu, Xuewen Wang, Wei Fu, Peng Yu, Tay-Rong Chang, Chuang-Han Hsu, Di Wu, Horng-Tay Jeng, Yizhong Huang, Hsin Lin, Zexiang Shen, Changli Yang, Li Lu, Kazu Suenaga, Wu Zhou, Sokrates T. Pantelides, Guangtong Liu and Zheng Liu

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201603471

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      Large-area and high-quality 2D transition metal tellurides are synthesized by the chemical vapor deposition method. The as-grown WTe2 maintains two different stacking sequences in the bilayer, where the atomic structure of the stacking boundary is revealed by scanning transmission electron microscopy. The low-temperature transport measurements reveal a novel semimetal-to-insulator transition in WTe2 layers and an enhanced superconductivity in few-layer MoTe2.

    2. Rapid Continuous Multimaterial Extrusion Bioprinting

      Wanjun Liu, Yu Shrike Zhang, Marcel A. Heinrich, Fabio De Ferrari, Hae Lin Jang, Syeda Mahwish Bakht, Mario Moisés Alvarez, Jingzhou Yang, Yi-Chen Li, Grissel Trujillo-de Santiago, Amir K. Miri, Kai Zhu, Parastoo Khoshakhlagh, Gyan Prakash, Hao Cheng, Xiaofei Guan, Zhe Zhong, Jie Ju, Geyunjian Harry Zhu, Xiangyu Jin, Su Ryon Shin, Mehmet Remzi Dokmeci and Ali Khademhosseini

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201604630

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      The development of a multimaterial extrusion bioprinting platform is reported. This platform is capable of depositing multiple coded bioinks in a continuous manner with fast and smooth switching among different reservoirs for rapid fabrication of complex constructs, through digitally controlled extrusion of bioinks from a single printhead consisting of bundled capillaries synergized with programmed movement of the motorized stage.

    3. Stacked-Layer Heterostructure Films of 2D Thiophene Nanosheets and Graphene for High-Rate All-Solid-State Pseudocapacitors with Enhanced Volumetric Capacitance

      Zhong-Shuai Wu, Yijun Zheng, Shuanghao Zheng, Sen Wang, Chenglin Sun, Khaled Parvez, Taichi Ikeda, Xinhe Bao, Klaus Müllen and Xinliang Feng

      Version of Record online: 15 NOV 2016 | DOI: 10.1002/adma.201602960

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      Stacked-layer heterostructure films of 2D thiophene nanosheets and electrochemically exfoliated graphene are constructed for ultrahigh-rate all-solid-state flexible pseudocapacitors and micro-supercapacitors with superior volumetric capacitance due to the synergetic effect of the ultrathin pseudocapacitive thiophene nanosheets and the capacitive electrochemically exfoliated graphene.

    4. Significant Radiation Tolerance and Moderate Reduction in Thermal Transport of a Tungsten Nanofilm by Inserting Monolayer Graphene

      Shuyao Si, Wenqing Li, Xiaolong Zhao, Meng Han, Yanan Yue, Wei Wu, Shishang Guo, Xingang Zhang, Zhigao Dai, Xinwei Wang, Xiangheng Xiao and Changzhong Jiang

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201604623

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      Tungsten–graphene multilayer composites are fabricated using a stacking method. The thermal resistance induced by the graphene interlayer is moderate. An ion-implantation method is used to verify the radiation tolerance. The results show that graphene inserted among tungsten films plays a dominant role in reducing radiation damage. Furthermore, the performance of different tungsten period-thicknesses in radiation tolerance is systematically analyzed.

    5. Core–Shell Gold Nanorod@Metal–Organic Framework Nanoprobes for Multimodality Diagnosis of Glioma

      Wenting Shang, Chaoting Zeng, Yang Du, Hui Hui, Xiao Liang, Chongwei Chi, Kun Wang, Zhongliang Wang and Jie Tian

      Version of Record online: 18 NOV 2016 | DOI: 10.1002/adma.201604381

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      One of the most significant challenges in the diagnosis of brain cancer is efficient in vivo imaging using nontoxic nanoprobes. Core–shell gold nanorod@MIL-88(Fe) nanostars are successfully constructed as triple-modality imaging (computed tomography/magnetic-resonance imaging/photoacoustic imaging) nanoprobes that show low cytotoxicity, high contrast, high penetration depth, and high spatial resolution for accurate and noninvasive imaging and diagnosis of gliomas.

    6. Temperature Dependence of Anisotropic Thermal-Conductivity Tensor of Bulk Black Phosphorus

      Bo Sun, Xiaokun Gu, Qingsheng Zeng, Xi Huang, Yuexiang Yan, Zheng Liu, Ronggui Yang and Yee Kan Koh

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201603297

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      The anisotropic thermal-conductivity tensor of bulk black phosphorus (BP) for 80 ≤T ≤ 300 K is reported. Despite the anisotropy, phonons are predominantly scattered by Umklapp processes in all the crystallographic orientations. It is also found that the phonon mean-free-paths of BP are rather long (up to 1 µm) in the through-plane direction.

    7. Conductance Oscillations in a Graphene/Nanocluster Hybrid Material: Toward Large-Area Single-Electron Devices

      Florian Godel, Louis Donald Notemgnou Mouafo, Guillaume Froehlicher, Bernard Doudin, Stéphane Berciaud, Yves Henry, Jean-François Dayen and David Halley

      Version of Record online: 21 NOV 2016 | DOI: 10.1002/adma.201604837

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      Large assemblies of self-organized aluminum nanoclusters embedded in an oxide layer are formed on graphene templates and used to build tunnel-junction devices. Unexpectedly, single-electron-transport behavior with well-defined Coulomb oscillations is observed for a record junction area of up to 100 µm2 containing millions of metal islands. Such graphene–metal nanocluster hybrid materials offer new prospects for single-electron electronics.

    8. Efficient Electrochemical and Photoelectrochemical Water Splitting by a 3D Nanostructured Carbon Supported on Flexible Exfoliated Graphene Foil

      Yang Hou, Ming Qiu, Tao Zhang, Ji Ma, Shaohua Liu, Xiaodong Zhuang, Chris Yuan and Xinliang Feng

      Version of Record online: 18 NOV 2016 | DOI: 10.1002/adma.201604480

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      A novel 3D Co–Nx|P-complex-doped carbon grown on flexible exfoliated graphene foil is designed and constructed for both electrochemical and photoelectrochemical water splitting. The coordination of CoNx active centers hybridized with that of neighboring P atoms enhances the electron transfer and optimizes the charge distribution of the carbon surface, which synergistically promotes reaction kinetics by providing more exposed active sites.

    9. An Arbitrary Color Light Emitter

      Wei-Chun Tan, Yu-Chi Chen, Yi-Rou Liou, Han-Wen Hu, Mario Hofmann and Yang-Fang Chen

      Version of Record online: 21 NOV 2016 | DOI: 10.1002/adma.201604076

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      The integration of a light-emitting transistor based on graphene/insulator/semiconductor with downconversion emitters enables the manipulation of emitted light covering the whole chromaticity space, including white-light emission. This novel arbitrary-color light emitter offers a promising approach for new applications in optoelectronic devices ranging from displays to solid-state lighting.

    10. Electrochemical Reduction of N2 under Ambient Conditions for Artificial N2 Fixation and Renewable Energy Storage Using N2/NH3 Cycle

      Di Bao, Qi Zhang, Fan-Lu Meng, Hai-Xia Zhong, Miao-Miao Shi, Yu Zhang, Jun-Min Yan, Qing Jiang and Xin-Bo Zhang

      Version of Record online: 11 NOV 2016 | DOI: 10.1002/adma.201604799

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      Using tetrahexahedral gold nanorods as a heterogeneous electrocatalyst, an electrocatalytic N2 reduction reaction is shown to be possible at room temperature and atmospheric pressure, with a high Faradic efficiency up to 4.02% at −0.2 V vs reversible hydrogen electrode (1.648 µg h−1 cm−2 and 0.102 µg h−1 cm−2 for NH3 and N2H4·H2O, respectively).

    11. An Artificial CO2-Driven Ionic Gate Inspired by Olfactory Sensory Neurons in Mosquitoes

      Xiaomeng Shang, Ganhua Xie, Xiang-Yu Kong, Zhen Zhang, Yuqi Zhang, Wei Tian, Liping Wen and Lei Jiang

      Version of Record online: 27 OCT 2016 | DOI: 10.1002/adma.201603884

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      A novel CO2-driven ionic gate, mimicking the function of olfactory sensory neurons of mosquitoes, is successfully developed by functionalizing the walls of the nanochannels using 1-(4-amino-phenyl)-2,2,2-trifluoro-ethanone. This artificial nanochannel can switch between the ON-state and OFF-state in the presence and absence of CO2, with an ultrahigh gating ratio of up to 1250, and has potential applications in CO2-related sensing, gating, and nanofluidic systems.

  10. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
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    5. Back Cover
    6. Masthead
    7. Contents
    8. Progress Reports
    9. Reviews
    10. Communications
    11. Frontispiece
    12. Communications
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      Light-Emitting Diodes: Bright Multicolor Bandgap Fluorescent Carbon Quantum Dots for Electroluminescent Light-Emitting Diodes (Adv. Mater. 3/2017)

      Fanglong Yuan, Zhibin Wang, Xiaohong Li, Yunchao Li, Zhan'ao Tan, Louzhen Fan and Shihe Yang

      Version of Record online: 13 JAN 2017 | DOI: 10.1002/adma.201770019

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      The first full-color electroluminescent light-emitting diodes (LEDs) that directly use bandgap-emission carbon quantum dots (CQDs) with a quantum yield up to 75% as active emission layer are fabricated by Z. A. Tan, L. Z. Fan, and co-workers, as described in article 1604436. Without using a holetransport layer, the maximum luminance of blue LEDs reached about 136 cd m−2, a record for CQD-based monochrome LEDs.

  11. Communications

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    1. Bright Multicolor Bandgap Fluorescent Carbon Quantum Dots for Electroluminescent Light-Emitting Diodes

      Fanglong Yuan, Zhibin Wang, Xiaohong Li, Yunchao Li, Zhan'ao Tan, Louzhen Fan and Shihe Yang

      Version of Record online: 23 NOV 2016 | DOI: 10.1002/adma.201604436

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      Multicolor bandgap fluorescent carbon quantum dots (MCBF-CQDs) from blue to red with quantum yield up to 75% are synthesized using a solvothermal method. For the first time, monochrome electroluminescent light-emitting diodes (LEDs) with MCBF-CQDs directly as an active emission layer are fabricated. The maximum luminance of blue LEDs reaches 136 cd m−2, which is the best performance for CQD-based monochrome electroluminescent LEDs.

    2. Variation of Topology in Magnetic Bubbles in a Colossal Magnetoresistive Manganite

      Xiuzhen Yu, Yusuke Tokunaga, Yasujiro Taguchi and Yoshinori Tokura

      Version of Record online: 13 OCT 2016 | DOI: 10.1002/adma.201603958

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      The emergence of zero-bias bubbles (≈100 nm in diameter) with various Bloch lines and their triangular lattice is revealed in a colossal magnetoresistive material, La1−xSrxMnO3, by means of Lorentz transmission electron microscopy (LTEM). The magnetization dynamics, and accompanying changes of the topological number of bubbles via the field-driven motion of the Bloch lines, are demonstrated by in situ LTEM observations.

    3. High-Performance Photothermal Conversion of Narrow-Bandgap Ti2O3 Nanoparticles

      Juan Wang, Yangyang Li, Lin Deng, Nini Wei, Yakui Weng, Shuai Dong, Dianpeng Qi, Jun Qiu, Xiaodong Chen and Tom Wu

      Version of Record online: 11 NOV 2016 | DOI: 10.1002/adma.201603730

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      Ti2O3 nanoparticles with high performance of photothermal conversion are demonstrated for the first time. Benefiting from the nanosize and narrow-bandgap features, the Ti2O3 nanoparticles possess strong light absorption and nearly 100% internal solar–thermal conversion efficiency. Furthermore, Ti2O3-nanoparticle-based thin film shows potential use in seawater desalination and purification.

    4. Bimetal-Organic Framework Derived CoFe2O4/C Porous Hybrid Nanorod Arrays as High-Performance Electrocatalysts for Oxygen Evolution Reaction

      Xue-Feng Lu, Lin-Fei Gu, Jia-Wei Wang, Jun-Xi Wu, Pei-Qin Liao and Gao-Ren Li

      Version of Record online: 16 NOV 2016 | DOI: 10.1002/adma.201604437

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      Porous CoFe2O4/C NRAs supported on nickel foam@NC (denoted as NF@NC-CoFe2O4/C NRAs) are directly fabricated by the carbonization of bimetal–organic framework NRAs grown on NF@poly-aniline(PANI), and they exhibit high electrocatalytic activity, low overpotential, and high stability for the oxygen evolution reaction in alkaline media.

    5. Active Photoswitching of Sharp Fano Resonances in THz Metadevices

      Manukumara Manjappa, Yogesh Kumar Srivastava, Longqing Cong, Ibraheem Al-Naib and Ranjan Singh

      Version of Record online: 14 NOV 2016 | DOI: 10.1002/adma.201603355

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      Fano resonances offer exciting features in enhancing the non-linearity and sensing capabilities in metamaterial systems. An active photoswitching of Fano resonances in a terahertz metadevice at low optical pump powers is demonstrated, which signifies the extreme sensitivity of the high-quality-factor resonant electric field to the external light illumination.

    6. Interwoven MXene Nanosheet/Carbon-Nanotube Composites as Li–S Cathode Hosts

      Xiao Liang, Yverick Rangom, Chun Yuen Kwok, Quan Pang and Linda F. Nazar

      Version of Record online: 14 NOV 2016 | DOI: 10.1002/adma.201603040

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      The complex surface chemistry that dictates the interaction between MXene and polysulfides – the formation of thiosulfate via consumption of –OH surface groups, followed by Lewis acid–base interaction between the exposed Ti atoms and polysulfides – is unravelled. Interweaving carbon nanotubes between the MXene layers creates a porous, conductive network with high polysulfide adsorptivity, enabling sulfur hosts with excellent performance even at high loading (5.5 mg cm–2).

    7. 3D Lifetime Tomography Reveals How CdCl2 Improves Recombination Throughout CdTe Solar Cells

      Edward S. Barnard, Benedikt Ursprung, Eric Colegrove, Helio R. Moutinho, Nicholas J. Borys, Brian E. Hardin, Craig H. Peters, Wyatt K. Metzger and P. James Schuck

      Version of Record online: 15 NOV 2016 | DOI: 10.1002/adma.201603801

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      Using two-photon tomography, carrier lifetimes are mapped in polycrystalline CdTe photovoltaic devices. These 3D maps probe subsurface carrier dynamics that are inaccessible with traditional optical techniques. They reveal that CdCl2 treatment of CdTe solar cells suppresses nonradiative recombination and enhances carrier lifetimes throughout the film with substantial improvements particularly near subsurface grain boundaries and the critical buried p–n junction.

    8. Ultrastrong Boron Frameworks in ZrB12: A Highway for Electron Conducting

      Teng Ma, Hui Li, Xu Zheng, Shanmin Wang, Xiancheng Wang, Huaizhou Zhao, Songbai Han, Jian Liu, Ruifeng Zhang, Pinwen Zhu, Youwen Long, Jinguang Cheng, Yanming Ma, Yusheng Zhao, Changqing Jin and Xiaohui Yu

      Version of Record online: 15 NOV 2016 | DOI: 10.1002/adma.201604003

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      ZrB12, with a high symmetrical cubic structure, possesses both high hardness ≈27.0 GPa and ultralow electrical resistivity ≈18 µΩ cm at room temperature. Both the superior conductivity and hardness of ZrB12 are associated with the extended B[BOND]B 3D covalent bonding network as it is not only favorable for achieving high hardness, but also provides conducting channels for transporting electrons.

    9. Mapping Polymer Donors toward High-Efficiency Fullerene Free Organic Solar Cells

      Yuze Lin, Fuwen Zhao, Yang Wu, Kai Chen, Yuxin Xia, Guangwu Li, Shyamal K. K. Prasad, Jingshuai Zhu, Lijun Huo, Haijun Bin, Zhi-Guo Zhang, Xia Guo, Maojie Zhang, Yanming Sun, Feng Gao, Zhixiang Wei, Wei Ma, Chunru Wang, Justin Hodgkiss, Zhishan Bo, Olle Inganäs, Yongfang Li and Xiaowei Zhan

      Version of Record online: 10 NOV 2016 | DOI: 10.1002/adma.201604155

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      Five polymer donors with distinct chemical structures and different electronic properties are surveyed in a planar and narrow-bandgap fused-ring electron acceptor (IDIC)-based organic solar cells, which exhibit power conversion efficiencies of up to 11%.

    10. Control of Periodic Zigzag Structures of DNA by a Simple Shearing Method

      Yun Jeong Cha and Dong Ki Yoon

      Version of Record online: 15 NOV 2016 | DOI: 10.1002/adma.201604247

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      A periodic zigzag structure of DNA material is successfully fabricated by a simple shearing method. The periodicity of the pattern can be finely controlled by combining the mechanical shearing method with topographic patterns of microchannels. The resultant zigzag patterns can be used as a template to control the alignment of rod-like liquid crystals due to its highly regular periodicity.

    11. Giant Rashba Splitting in Pb1–xSnxTe (111) Topological Crystalline Insulator Films Controlled by Bi Doping in the Bulk

      Valentine V. Volobuev, Partha S. Mandal, Marta Galicka, Ondřej Caha, Jaime Sánchez-Barriga, Domenico Di Sante, Andrei Varykhalov, Amir Khiar, Silvia Picozzi, Günther Bauer, Perla Kacman, Ryszard Buczko, Oliver Rader and Gunther Springholz

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201604185

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      The topological properties of lead-tin chalcogenide topological crystalline insulators can be widely tuned by temperature and composition. It is shown that bulk Bi doping of epitaxial Pb1-xSnxTe (111) films induces a giant Rashba splitting at the surface that can be tuned by the doping level. Tight binding calculations identify their origin as Fermi level pinning by trap states at the surface.

    12. Light-Steered Isotropic Semiconductor Micromotors

      Chuanrui Chen, Fangzhi Mou, Leilei Xu, Shaofei Wang, Jianguo Guan, Zunpeng Feng, Quanwei Wang, Lei Kong, Wei Li, Joseph Wang and Qingjie Zhang

      Version of Record online: 17 OCT 2016 | DOI: 10.1002/adma.201603374

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      Intelligent photoresponsive isotropic semiconductor micromotors are developed by taking advantage of the limited penetration depth of light to induce asymmetrical surface chemical reactions. Independent of the Brownian motion of themselves, the as-proposed isotropic micromotors are able to continuously move with both motion direction and speed just controlled by light, as well as precisely manipulate particles for nanoengineering.

    13. Thermally Active Liquid Crystal Network Gripper Mimicking the Self-Peeling of Gecko Toe Pads

      Hamed Shahsavan, Seyyed Muhammad Salili, Antal Jákli and Boxin Zhao

      Version of Record online: 17 NOV 2016 | DOI: 10.1002/adma.201604021

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      Self-peeling of gecko toes is mimicked by integration of film-terminated fibrillar adhesives to hybrid nematic liquid crystal network (LCN) cantilevers. A soft gripper is developed based on the gecko-inspired attachment/detachment mechanism. Performance of the fabricated gripper for transportation of thin delicate objects is evaluated by the optimum mechanical strength of the LCN and the maximum size of the adhesive patch.

    14. High Performance Graphene/Ni2P Hybrid Anodes for Lithium and Sodium Storage through 3D Yolk–Shell-Like Nanostructural Design

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

      Version of Record online: 14 NOV 2016 | DOI: 10.1002/adma.201604015

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      A 3D yolk–shell-like electrode material composed of a porous interconnected graphene network and embedded Ni2P nanoparticles is designed and fabricated by an assembly and self-template strategy. This novel nanoarchitecture integrates the advantages of nanostructure and microstructure, and provides highly efficient and stable electrochemical circuits involving the active nanoparticles, leading to excellent electrochemical performance in terms of reversibility, rate capability, and cycle stability.

    15. Graphene Oxide Nanoribbon Assembly toward Moisture-Powered Information Storage

      Fei Zhao, Lixia Wang, Yang Zhao, Liangti Qu and Liming Dai

      Version of Record online: 14 NOV 2016 | DOI: 10.1002/adma.201604972

      Thumbnail image of graphical abstract

      Moisture-powered potential switching is achieved by establishing ion channels and an oxygen-functional-group gradient in graphene oxide nanoribbon network assemblies. The resulting flexible membrane is used to fabricate breath-powered write-once-read-many-times-type memory devices with a remarkably low error risk (ON/OFF ratio of 106), and long-term stability for reading out with human breath.

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