Synthesis and properties of a carbazole-containing hyperbranched poly(aryleneethynylene)s

POLY 220

Han Peng, hpeng@scut.edu.cn1, Xiu Wen Zheng, zhengxiuwen11@163.com1, and Ben Zhong Tang, tangbenz@ust.hk2. (1) Institute of Material Science and Engineering, South China University of Technology, Guangzhou, 510640, China, (2) Department of Chemistry, Hong Kong University of Science & Technology, Hong Kong, China
Hyperbranched poly(aryleneethynylene)s (HPAEs) have been synthesized by one-pot copolycyclotrimerization of aromatic diyne with monoyn. New aromatic diyne 3,7-bis-(4-ethynylphenylethynyl)-9-octyl-carbazole (1) is synthesized by multistep reactions. Copolymerizations of 1 with 1-octyne (2) is effected by CpCo(CO)2 in THF. The structures and properties of the resultant polymers are characterized and evaluated by IR, UV, NMR, TGA, and fluorescence analyses. These polymers are completely soluble in such common solvents as toluene, THF, chloroform, and dichloromethane. All the HPAEs show outstanding thermal stability and carbonize in high yields. Upon photoexcitation, all polymers emit blue light of 400 nm.
 

General Papers: Synthesis and Characterization
6:00 PM-8:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Polymer Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006