Light-mediated CO_(2)-responsiveness of metallopolymer microgels  

作　　者：Xiaofei Wang Xuezhen Lin Huijuan Qiu Jianda Xie Zhengyu Lu Yusong Wang Weitai Wu 

机构地区：[1]State Key Laboratory for Physical Chemistry of Solid Surfaces,Collaborative Innovation Center of Chemistry for Energy Materials,The Key Laboratory for Chemical Biology of Fujian Province,and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [2]School of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China [3]Hefei National Laboratory for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China [4]School of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,China

出　　处：《Chinese Chemical Letters》2022年第3期1445-1449,共5页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos. 21774105, 21805164, 20923004);Chuying Plan Youth Top-notch Talents of Fujian Province;National Fund for Fostering Talents of Basic Science (No. J1310024)。

摘　　要：Here, we report a finding on light-mediated CO_(2)^(-)responsiveness. It is found on the microgels that are made of side-chain type metallopolymers containing metalla-aromatics. Turbidity and laser light scattering studies on dilute aqueous dispersion of these microgels in dark indicate high CO_(2)^(-)responsivity, but poor reversibility upon N2 purge, which can be improved by exposing to light. This light-mediated CO_(2)^(-)responsiveness can be elucidated by the loss of aromaticity from initial photoexcitation and concurrent formation of a less reactive, antiaromatic excited state of relatively low CO_(2) binding affinity, and by subsequent relief of antiaromaticity that can enhance the CO_(2) removal. The finding is also checked by CO_(2) uptake-release experiments on the microgels, which enables both CO_(2) capture of high capacity and CO_(2) removal of good reversibility under a mild condition, allowing effective and reversible response to dilute CO_(2).

关 键 词：STIMULI-RESPONSIVE METALLOPOLYMERS LIGHT Dilute CO_(2) Reversible uptake-release 

分 类 号：TQ317[化学工程—高聚物工业] TQ427.26