Enhanced head-to-head photodimers in the photocyclodimerization of anthracenecarboxylic acid with a cationic pillar[6]arene  

作　　者：Jian-Chang Gui Zhi-Qiang Yan Yuan Peng Ji-Gao Yi Da-Yang Zhou Dan Su Zhi-Hui Zhong Guo-Wei Gao Wan-Hua Wu Cheng Yang 

机构地区：[1]Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China [2]Chengdu Environmental Monitoring Center, Chengdu 610042, China [3]Comprehensive Analysis Center, ISIR, Osaka University, 8-I Mihogaoka, lbaraki, Osaka 5670047, Japan

出　　处：《Chinese Chemical Letters》2016年第7期1017-1021,共5页中国化学快报（英文版）

基　　金：supported by the grants from National Natural Science Foundation of China (Nos. 21372165, 21321061 and 21572142 for CY, No. 21402129 for WW);State Key Laboratory of Polymer Materials Engineering (No. sklpme2014-2-06)

摘　　要：The complexation behaviors of anthracenecarboxylic acid and water-soluble cationic pillararenes have been investigated by 1H NMR,UV-vis and ITC methods.The cationic pillar[6]arene was found to stepwise form 1：1 and 1：2 complexes,having a large K1 and a relatively small K2 values.Photocyclodimerization of AC within the pillar[6]arene improved the yield of the head-to-head photodimers.Up to 4.97 HH/HT ratio has been reached by optimizing the reaction conditions.The complexation behaviors of anthracenecarboxylic acid and water-soluble cationic pillararenes have been investigated by 1H NMR,UV-vis and ITC methods.The cationic pillar[6]arene was found to stepwise form 1：1 and 1：2 complexes,having a large K1 and a relatively small K2 values.Photocyclodimerization of AC within the pillar[6]arene improved the yield of the head-to-head photodimers.Up to 4.97 HH/HT ratio has been reached by optimizing the reaction conditions.

关 键 词：arene Photocyclodimerization Anthracenecarboxylic acid Supramolecular complexation 

分 类 号：O631.5[理学—高分子化学]