Donor-acceptor type[4+3]covalent organic frameworks:sub-stoichiometric synthesis and photocatalytic application  

作　　者：Qiaobo Liao Wentao Xu Xin Huang Can Ke Qi Zhang Kai Xi Jin Xie 

机构地区：[1]State Key Laboratory of Coordination Chemistry,Jiangsu Key Laboratory of Advanced Organic Materials,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China

出　　处：《Science China Chemistry》2020年第5期707-714,共8页中国科学（化学英文版）

基　　金：supported by the Ministry of Science and Technology of China(2017YFA0700503);the Fundamental Research Funds for the Central Universities(020514380149);1000-Youth Talent Plan,Nanjing University Graduate Interdisciplinary Research and Innovation Project(2018CL05)。

摘　　要：Three unprecedented 2 D[4+3]covalent organic frameworks(TTCOF-1,TTCOF-2,and TTCOF-3)have been prepared by substoichiometric condensation of tetratopic and tritopic monomers,overcoming the limitations of the design rules of conventional topologies.By reticulating the tetraphenylethylene(TPE)-based and triazine-based moieties into COF frameworks,novel electron donor-acceptor(D-A)type structures were obtained.These TTCOFs have good photocatalytic activity in aerobic C(sp3)–H bond functionalization and arylboronic acid oxidation driven by visible light,with yields up to 94%.This can expedite possibilities of COFs with new structural and topological complexities and can also expand the application of COF-based photocatalysis in synthetic chemistry.

关 键 词：COF sub-stoichiometric synthesis crystal engineering photocatalysis aerobic oxidation 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] O641.3