Plasmonic coupling-enhanced in situ photothermal nanoreactor with shape selective catalysis for C-C coupling reaction
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Plasmonic coupling-enhanced in situ photothermal nanoreactor with shape selective catalysis for C–C coupling reaction Zhenxing Li1 (), Yixuan Gong1, Xin Zhang1, Yangyang Wen1, Jiasai Yao1, Mingliang Hu1, Miao He1, Jiahao Liu1, Rui Li1, Fuqiang Wang2, and Chuanxin Zhang2 () 1
Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, Beijing Key Laboratory of Biogas Upgrading Utilization, China University of Petroleum (Beijing), Beijing 102249, China 2 School of New Energy, Harbin Institute of Technology at Weihai, 2 West Wenhua Road, Weihai 264209, China © Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Received: 9 April 2020 / Revised: 19 May 2020 / Accepted: 13 June 2020
ABSTRACT Carbon-carbon (C–C) coupling reactions represent one of the most powerful tools for the synthesis of complex natural products, bioactive molecules developed as drugs and agrochemicals. In this work, a multifunctional nanoreactor for C–C coupling reaction was successfully fabricated via encapsulating the core-shell Cu@Ni nanocubes into ZIF-8 (Cu@Ni@ZIF-8). In this nanoreactor, Ni shell of the core-shell Cu@Ni nanocubes was the catalytical active center, and Cu core was in situ heating source for the catalyst by absorbing the visible light. Moreover, benefiting from the plasmonic resonance effect between Cu@Ni nanocubes encapsulated in ZIF-8, the absorption range of nanoreactor was widened and the utilization rate of visible light was enhanced. Most importantly, the microporous structure of ZIF-8 provided shape-selective of reactant. This composite was used for the highly shape-selective and stable photocatalysed C–C coupling reaction of boric acid under visible light irradiation. After five cycles, the nanoreactor still remained high catalytical activity. This Cu@Ni@ZIF-8 nanoreactor opens a way for photocatalytic C–C coupling reactions with shape-selectivity.
KEYWORDS nanoreactor, metal-organic framework, photocatalysis, shape selective catalysis, C–C coupling reaction
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Introduction
Carbon-carbon (C–C) coupling reaction is one of the most significant reaction types in organic synthesis [1], which meets the requirements of high atomic economic efficiency, allowing chemists to obtain complex compounds accurately and efficiently. C–C coupling reaction can be widely applied in the production of agrochemicals and pharmaceutical drugs or in materials science [2, 3]. Due to the breakthrough in C–C coupling reaction, Suzuki and Heck were jointly awarded the 2010 Nobel Prize in Chemistry [4]. Recently, due to its recyclable, ligand-free and environmentally friendly characteristics, heterogeneous metal nanocatalysts have developed rapidly in C–C coupling reactions. Up till the present moment, most of the nanocatalysts in C–C coupling reactions were Pd or Ni nanoparticles [5–12]. Kiseong et al. [13]. reported Pd nanoparticles with controllable oxidation state. Most important of all, the halogenation of C–H bonds and formation of C–C bonds were connected via precisely adjusting the
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