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  1. Toward Activity Origin of Electrocatalytic Hydrogen Evolution Reaction on Carbon-Rich Crystalline Coordination Polymers

    Lihuan Wang, Diana C. Tranca, Jian Zhang, Yanpeng Qi, Stavroula Sfaelou, Tao Zhang, Renhao Dong, Xiaodong Zhuang, Zhikun Zheng and Gotthard Seifert

    Version of Record online: 25 JUL 2017 | DOI: 10.1002/smll.201700783

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    The fundamental understanding of electrocatalytic hydrogen-evolution reaction active sites is important for the development of metal complex involved carbon electrocatalysts with low kinetic barrier. Here, the molecular active centers are selectively incorporated into ladder-type, highly crystalline coordination polymers as model carbon electrocatalysts for H2 generation from water. The activity origin is clarified.

  2. Efficient Organic Solar Cells with Non-Fullerene Acceptors

    Shuixing Li, Wenqing Liu, Chang-Zhi Li, Minmin Shi and Hongzheng Chen

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/smll.201701120

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    Fullerene-free organic solar cells (OSCs) have made great progress in recent years with efficiencies surpassing 12%. In this Review, recent high-performance non-fullerene acceptors developed for OSCs are summarized, mainly correlating factors like absorption, energy loss and morphology of new materials to their correspondent photovoltaic performance. The perspectives for fullerene-free OSCs with efficiency of 15% are briefly discussed.

  3. Integration of IR-808 Sensitized Upconversion Nanostructure and MoS2 Nanosheet for 808 nm NIR Light Triggered Phototherapy and Bioimaging

    Jiating Xu, Arif Gulzar, Yuhui Liu, Huiting Bi, Shili Gai, Bin Liu, Dan Yang, Fei He and Piaoping Yang

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/smll.201701841

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    A novel nanostructure with photodynamic therapy (PDT) and photothermal therapy (PTT) effect is first synthesized by grafting highly efficient photodynamic upconversion nanoparticles on a MoS2 nanosheet, which exhibits high tumor inhibition efficacy due to a synergetic PDT and PTT mediated by a biocompatible near infrared laser, and the therapeutic process can be visualized by trimodal (upconversion luminescence/computed tomography (CT)/magnetic resonance imaging (MRI) imaging.

  4. Homopolymer Nanolithography

    Moritz Tebbe, Elizabeth Galati, Gilbert C. Walker and Eugenia Kumacheva

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/smll.201702043

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    A homopolymer nanolithography strategy is reported. The approach utilizes surface segregation of end-grafted homopolymer in a poor solvent. The methodology yields random surface nanostructures including spherical micelles, worm-like structures, networks, and porous layers, all obtained from the same homopolymer by tuning its grafting density. The nanopatterns are used to achieve site-selective deposition of small molecules, polymers, and nanoparticles.

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    3D Orientational Control in Self-Assembled Thin Films with Sub-5 nm Features by Light

    Koen Nickmans, Gerardus M. Bögels, Carlos Sánchez-Somolinos, Jeffrey N. Murphy, Philippe Leclère, Ilja K. Voets and Albertus P. H. J. Schenning

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/smll.201701043

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    Highly ordered nanopatterns are obtained at sub-5 nm periodicities by the photoalignment of hybrid oligo(dimethylsiloxane) liquid crystals. By using light, aligned structures can be realized on macroscopic length scales in a noncontact fashion with 3D control over the thin-film orientation.