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
DOI:10.1007/s11426-019-9696-3
日期:2020.5
Three unprecedented 2D [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
通过四位和三位单体的亚化学计量缩合,已经克服了常规拓扑设计规则的局限性,制备了三种前所未有的2D [4 + 3]共价有机骨架(TTCOF-1,TTCOF-2和TTCOF-3)。通过将基于四苯乙烯(TPE)和基于三嗪的部分网状化为COF骨架,获得了新型的电子供体-受体(DA)型结构。这些TTCOF在可见光驱动的好氧C(sp 3)-H键官能化和芳基硼酸氧化中具有良好的光催化活性,收率高达94%。这可以加快具有新的结构和拓扑复杂性的COF的可能性,还可以扩展基于COF的光催化在合成化学中的应用。