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    Graphene Oxide-Based Sensor for Ultrasensitive Visual Detection of Fluoride

    Tapas K. Mandal, Yi Hou, Zhenyu Gao, Haoran Ning, Wensheng Yang and Mingyuan Gao

    Version of Record online: 21 JUL 2016 | DOI: 10.1002/advs.201600217

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    Visual fluoride ion detection with a detection limit down to pmol L−1 is achieved through quenching/reactivating the fluorescence of N-doped graphene oxide.

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    Chloride-Reinforced Carbon Nanofiber Host as Effective Polysulfide Traps in Lithium–Sulfur Batteries

    Lei Fan, Houlong L. Zhuang, Kaihang Zhang, Valentino R. Cooper, Qi Li and Yingying Lu

    Version of Record online: 21 JUL 2016 | DOI: 10.1002/advs.201600175

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    A class of chloride-reinforced carbon nanofiber composites is fabricated by co-electrospinning and physical vapor deposition procedures, and is utilized as cathode substrate in a lithium–sulfur battery. The nonconductive halogenated salts can effectively confine lithium polysulfides in the 3D carbon matrix. Sulfide adsorption along with its diffusion near these chloride materials plays an important role on the reversibility of sulfur-based cathode.

  3. You have full text access to this OnlineOpen article
    Capacity Fade Analysis of Sulfur Cathodes in Lithium–Sulfur Batteries

    Jianhua Yan, Xingbo Liu and Bingyun Li

    Version of Record online: 21 JUL 2016 | DOI: 10.1002/advs.201600101

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    Sulfur undergoes a multistep reaction during cycling. In discharge, sulfur is reduced to Li2S by accepting the Li-ions and electrons at cathode; in charge, a reversed reaction takes place. The electrolyte viscosity and polarization in cells influence the discharge and charge curves and therefore influence capacity and capacity fade of liquid-type lithium sulfur batteries.

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    The Role of Local Triplet Excited States and D-A Relative Orientation in Thermally Activated Delayed Fluorescence: Photophysics and Devices

    Fernando B. Dias, Jose Santos, David R. Graves, Przemyslaw Data, Roberto S. Nobuyasu, Mark A. Fox, Andrei S. Batsanov, Tiago Palmeira, Mário N. Berberan-Santos, Martin R. Bryce and Andrew P. Monkman

    Version of Record online: 18 JUL 2016 | DOI: 10.1002/advs.201600080

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    The crucial step in the thermally activated delayed fluorescence (TADF) mechanism is the reverse intersystem crossing that converts triplet to singlet states. Here we show that this is mediated by a spin orbit charge transfer (CT) mechanism between the CT manifold and a local triplet state, and requires dynamic rocking about the D-A bond. This explains how molecular geometry and environment influences TADF and the photophysics of D-A-D molecules.

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    Single Crystal Sub-Nanometer Sized Cu6(SR)6 Clusters: Structure, Photophysical Properties, and Electrochemical Sensing

    Xiaohui Gao, Shuijian He, Chunmei Zhang, Cheng Du, Xi Chen, Wei Xing, Shengli Chen, Andre Clayborne and Wei Chen

    Version of Record online: 14 JUL 2016 | DOI: 10.1002/advs.201600126

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    Single crystal (Cu6(SC7H4NO)6) nanoclusters are synthesized and the structural, electronic, optical properties, and application in electrochemical sensing of H2O2 are studied.

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