Synthesis of Two-Dimensional C–C Bonded Truxene-Based Covalent Organic Frameworks by Irreversible Brønsted Acid-Catalyzed Aldol Cyclotrimerization  

作　　者：Qingsong Zhang Yunlong Sun Haijing Li Kun Tang Yu-Wu Zhong Dong Wang Yunlong Guo Yunqi Liu 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Beijing Synchrotron Radiation Facility,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Research》2022年第1期91-98,共8页研究（英文）

基　　金：support from the Research Program of the Chinese Academy of Sciences(No.XDB30000000);the National Natural Science Foundation of China(Nos.21633012,61890940,and 21922511);the National Basic Research Program of China the Strategic Priority(2016YFA0200101 and 2018YFA0703200);the CAS Key Research Program of Frontier Sciences(QYZDY-SSWSLH029).

摘　　要：The synthesis of new C–C bonded two-dimensional(2D)covalent organic frameworks(COFs)is highly desirable.Here,a simple but effective synthetic strategy has been developed using an irreversible Brønsted acid-catalyzed aldol cyclotrimerization reaction by virtue of truxene as a linkage.Nonolefin C–C bonded 2D truxene-based covalent organic frameworks(Tru-COFs)were constructed by polymerization of 1,3,5-triindanonebenzene(TDB).The structure formation was confirmed by wide-angle X-ray scattering,Fourier-transform infrared spectroscopy,and solid-state ^(13)C CP/MAS NMR.The results showed that the Tru-COFs were porous(645 m^(2)/g)and chemically stable.Benzyl methylene in conjugated Tru-COFs more effectively produced photoinduced radicals than the model truxene compound.Due to the radical photoresponsiveness,Tru-COFs were efficient catalysts for photocatalytic oxidation of sulfides.We expect that this will provide a new synthetic methodology to obtain C–C bonded functional 2D COFs.

关 键 词：bonded REVERSIBLE valent 

分 类 号：O62[理学—有机化学]