Synthesis and photochemistry of novel bromo substituted stilbene derivatives as triplet state sensitizers for the generation of singlet oxygen  

作　　者：Hong Ru Li Qin Yuan Guo Ting Xie Fang Gao Sheng Tao Zhang 

机构地区：[1]College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China

出　　处：《Chinese Chemical Letters》2009年第12期1415-1418,共4页中国化学快报（英文版）

基　　金：support from National Natural Science Foundation of China(Nos. 20776165,20702065,20872184);Key Foundation of Chongqing Science and Technology Commission"(No.CSTC 2008BA4020);"A Foundation for the Author of National Excellent Doctoral Dissertation of PR China(200735)"for financial support;sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry as well(Nos.20071108-1, 20071108-5).

摘　　要：We have presented the synthesis and characterization of three new bromo substituted stilbene derivatives, p-3,4,5-trimethoxy-p′- 2,3,4,5,6-pentabromostilbene （C1）, p-N,N-dimethylamino-p′-2,3,4,5,6-pentabromostilbene （C2） and p-N,N-diphenylamino-p′- 2,3,4,5,6-pentabromostilbene （C3） in this letter. The UV/vis absorption and photoluminescence were investigated in various solvents. The maximal absorption wavelength of C1 exhibited blue-shift to those of C2 and C3 in different solvents. No florescence emission could be detected for these compounds at room temperature. Singlet oxygen could be efficiently produced with these sensitizers under near-ultraviolet and visible light irradiation.We have presented the synthesis and characterization of three new bromo substituted stilbene derivatives, p-3,4,5-trimethoxy-p′- 2,3,4,5,6-pentabromostilbene （C1）, p-N,N-dimethylamino-p′-2,3,4,5,6-pentabromostilbene （C2） and p-N,N-diphenylamino-p′- 2,3,4,5,6-pentabromostilbene （C3） in this letter. The UV/vis absorption and photoluminescence were investigated in various solvents. The maximal absorption wavelength of C1 exhibited blue-shift to those of C2 and C3 in different solvents. No florescence emission could be detected for these compounds at room temperature. Singlet oxygen could be efficiently produced with these sensitizers under near-ultraviolet and visible light irradiation.

关 键 词：SYNTHESIS PHOTOCHEMISTRY Triplet state Bromo substitution Singlet oxygen 

分 类 号：TQ613.1[化学工程—精细化工] O625.12[理学—有机化学]