文献类型：期刊文献

英文题名：Two-dimensional semiconducting covalent organic frameworks via condensation at arylmethyl carbon atoms

作者：Bi, Shuai[1];Yang, Can[2];Zhang, Wenbei[1];Xu, Junsong[1];Liu, Lingmei[3];Wu, Dongqing[1];Wang, Xinchen[2];Han, Yu[3];Liang, Qifeng[4];Zhang, Fan[1]

机构：[1]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;[2]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China;[3]KAUST, Adv Membranes & Porous Mat Ctr, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia;[4]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2019

卷号：10

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：SCI-EXPANDED(收录号：WOS:000470248000001)、、Scopus(收录号：2-s2.0-85066975301)、WOS

基金：We thank Shanghai Committee of Science and Technology for financial support within the project 16JC1400703. Furthermore, this work was financially supported by National Natural Science Foundation of China (21720102002, 21774072, 21574080, 21425309, 21761132002, 21861130353, and 21802022), the National Key Technologies R&D Program of China (2018YFA0209301) and the 111 Project (D16008). Open Project Program of the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (2019-01, Jilin University). S.B. acknowledges the Instrumental Analysis Center of SJTU for the NMR measurements. We thank Professor Feng Liu for his precious help.

语种：英文

外文摘要：Construction of organic semiconducting materials with in-plane it-conjugated structures and robustness through carbon-carbon bond linkages, alternatively as organic graphene analogs, is extremely desired for powerfully optoelectrical conversion. However, the poor reversibility for sp(2) carbon bond forming reactions makes them unavailable for building high crystalline well-defined organic structures through a self-healing process, such as covalent organic frameworks (COFs). Here we report a scalable solution-processing approach to synthesize a family of two-dimensional (2D) COFs with trans-disubstituted C = C linkages via condensation reaction at arylmethyl carbon atoms on the basis of 3,5-dicyano-2,4,6-trimethylpyridine and linear/trigonal aldehyde (i.e., 4,4 ''-diformyl-p-terphenyl, 4,4'-diformyl-1,1'-biphenyl, or 1,3,5-tris(4-formylphenyl)benzene) monomers. Such sp(2) carbon-jointedpyridinyl frameworks, featuring crystalline honeycomb-like structures with high surface areas, enable driving two half-reactions of water splitting separately under visible light irradiation, comparable to graphitic carbon nitride (g-C3N4) derivatives.