Photolumincscent Properties of Polyacetylenes Carbazole  

作　　者：XUE Qing HUANG Yuan-ming 

机构地区：[1]Department of Mathematics and Physics, Huaihai Institute of Technology, Lianyungang 222005, CHN [2]Department of Applied Physics, Shantou University, Shantou 515063, CHN

出　　处：《Semiconductor Photonics and Technology》2007年第3期192-195,共4页半导体光子学与技术（英文版）

基　　金：The Project Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars ,State Education Ministry ,2005;Natural Science Foundation of Guangdong Province(5300568);Key Scienceand Technology Research Foundation of State Education Ministry (206110);National Natural ScienceFoundation of China(10674091)

摘　　要：The optical properties of one mono-substituted polyacetylene and two di-substituted polyacetylenes have been investigated. Each of the substituted polyacetylenes bears a carbazole unit in the side chain. In spite of the differences in their molecular structures, the dilute solutions(about 1×10-6 M) of these substituted polyacetylenes exhibit the same absorptions and deep-blue emissions(about 360 nm). Interestingly, the absorption and emission spectra of these substituted polyacetylenes are similar to those of the small molecule carbazole. As the concentration of the substituted polyacetylenes increases to about 1×10-6 M, we have detected intense blue emissions at about 475 nm. Our results indicate that the absorption, the deep-blue emission(about 360 nm) and the intense blue emission(about 475 nm) originate from the carbazole chromophores in the side chain.The optical properties of one mono-substituted polyacetylene and two di-substituted polyacetylenes have been investigated. Each of the substituted polyacetylenes bears a carbazole unit in the side chain. In spite of the differences in their molecular structures, the dilute solutions（about 1 × 10^-6 M） of these substituted polyacetylenes exhibit the same absorptions and deep-blue emissions （about 360 nm）. Interestingly, the absorption and emission spectra of these substituted polyacetylenes are similar to those of the small molecule carbazole. As the concentration of the substituted polyacetylenes increases to about 1 × 10^-6 M, we have detected intense blue emissions at about 475 nm. Our results indicate that the absorption, the deep-blue emission（about 360nm） and the intense blue emission （about 475nm） originate from the carbazole chromophores in the side chain.

关 键 词：PHOTOLUMINESCENCE electronic structures conjugate backbone of polymer 

分 类 号：TQ17[化学工程—硅酸盐工业]