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  1. A New Design Strategy for Efficient Thermally Activated Delayed Fluorescence Organic Emitters: From Twisted to Planar Structures

    Xian-Kai Chen, Youichi Tsuchiya, Yuma Ishikawa, Cheng Zhong, Chihaya Adachi and Jean-Luc Brédas

    Version of Record online: 17 OCT 2017 | DOI: 10.1002/adma.201702767

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    A new strategy is proposed for the molecular design of efficient thermally activated delayed fluorescence (TADF) emitters that combine small singlet–triplet energy gaps and large fluorescence oscillator strengths. This strategy goes beyond the traditional framework of twisted TADF emitters and opens the way for coplanar molecules to be efficient TADF emitters.

  2. Thiol–Ene Clickable Gelatin: A Platform Bioink for Multiple 3D Biofabrication Technologies

    Sarah Bertlein, Gabriella Brown, Khoon S. Lim, Tomasz Jungst, Thomas Boeck, Torsten Blunk, Joerg Tessmar, Gary J. Hooper, Tim B. F. Woodfield and Juergen Groll

    Version of Record online: 17 OCT 2017 | DOI: 10.1002/adma.201703404

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    Allylated gelatin as a thiol–ene clickable bioink platform provides application for distinct biofabrication techniques. Cross-linking of this cytocompatible system results in controlled homogeneous dimerized networks without additional nondegradable components, in contrast to conventional free radical polymerization. Moreover, UV- and visible-light initiation of the hydrogels are compared.

  3. Lateral Graphene-Contacted Vertically Stacked WS2/MoS2 Hybrid Photodetectors with Large Gain

    Haijie Tan, Wenshuo Xu, Yuewen Sheng, Chit Siong Lau, Ye Fan, Qu Chen, Martin Tweedie, Xiaochen Wang, Yingqiu Zhou and Jamie H. Warner

    Version of Record online: 17 OCT 2017 | DOI: 10.1002/adma.201702917

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    WS2/MoS2 vertical heterostructures are known to have type-II band alignment and form layer-separated electron–hole pairs upon illumination. Lateral photodetectors based on WS2/MoS2 heterostacks with graphene electrodes are demonstrated using crystals grown by chemical vapor deposition. The unique device architecture results in superior photosensing performance with large photoconductive gain due to long-lived interlayer excitons and the photogating mechanism.

  4. Engineering 2D Nanofluidic Li-Ion Transport Channels for Superior Electrochemical Energy Storage

    Chunshuang Yan, Chade Lv, Yue Zhu, Gang Chen, Jingxue Sun and Guihua Yu

    Version of Record online: 17 OCT 2017 | DOI: 10.1002/adma.201703909

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    The stacked ultrathin Co3O4 nanosheets with surface functionalization possess 2D nanofluidic channels for rapid Li-ion transport in both half- and full-cells.

  5. Biomimetic Inspired Core–Canopy Quantum Dots: Ions Trapped in Voids Induce Kinetic Fluorescence Switching

    Arpita Saha, Elena Oleshkevich, Clara Vinas and Francesc Teixidor

    Version of Record online: 17 OCT 2017 | DOI: 10.1002/adma.201704238

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    Quantum dots with the architecture of packed spheres/pillars/ground are prepared. This architecture generates inner channels and openings. The channels can be filled with ions, tuning the charge of the quantum dots' construction. The channels are filled with Cl, inducing a negative charge in the assembly that is compensated by outer cations leading to unprecedented kinetic fluorescence switching.