Highly fluorescent intramolecular dimmers of two pyrenyl-substituted fluorenes bridged by 1,6-hexanyl: synthesis, spectroscopic, and self-organized properties
作者:Chao He、Qingguo He、Qing Chen、Liqi Shi、Huimin Cao、Jiangong Cheng、Changmin Deng、Tong Lin
DOI:10.1016/j.tetlet.2009.12.136
日期:2010.3
Two intramolecular dimmers of 4-, 8-pyrenyl-substituted fluorenes budged by 1,6-hexanyl unit have been synthesized. They showed very strong fluorescent emission with the emission peak at around 450 nm and fluorescence efficiency as high as similar to 0 9. The absorption spectra also had high extinction coefficients. The cyclic voltammetric curves showed that they can be used as electron-donating materials. The DSC results suggested the dimmers have higher glass transition temperature. It was also found that these novel dimmers can self-organize into spherical particles from the solutions due to evaporation of the solvent. (C) 2010 Elsevier Ltd All rights reserved.