A novel conformationally adaptive macrocyclic tetramaleimide with flipping pyrene sidewalls  

作　　者：Lingyun Zhu Wei Zeng Menghua Li Meijin Lin 

机构地区：[1]Key Laboratory of Molecule Synthesis and Function Discovery,and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials,College of Chemistry,Fuzhou University,Fuzhou 350116 China [2]College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China

出　　处：《Chinese Chemical Letters》2022年第1期229-233,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21971041 and 22001039);Natural Science Foundation of Fujian Province(Nos.2018J01431,2018J01690 and 2020J01447);Research Foundation of Education Bureau of Fujian Province(No.JT180813)。

摘　　要：The synthesis,structure,and properties of pyrene-based conformationally adaptive macrocycles are described.This new type of conformationally adaptive macrocycle was constructed through Perkin reaction,followed by imidization.By changing the condensation partner as the linking unit,a family of conjugated macrocycles with different sizes of the cavity was synthesized,which provide a simple and modular synthetic strategy towards the conformationally adaptive macrocycles.Furthermore,the macrocycles provide two well-defined conformations through flipping pyrene subunit,which were unambiguously determined by single-crystal X-ray diffraction analysis.The conformational interconversion barrier was determined by density functional theory(DFT)calculations.This new macrocycle also demonstrated unique properties,such as vapochromic behavior and aggregation emission enhancement effect.Furthermore,we have also investigated the effect of the linker on the shape and photophysical properties of the resulting macrocyclic products.

关 键 词：AEE Conjugated macrocycles DFT Flipping sidewalls Vapochromic 

分 类 号：O621.3[理学—有机化学]