Title of article :
Highly fluorescent intramolecular dimmers of two pyrenyl-substituted fluorenes bridged by 1,6-hexanyl: synthesis, spectroscopic, and self-organized properties
Author/Authors :
He، نويسنده , , Chao and He، نويسنده , , Qingguo and Chen، نويسنده , , Qing and Shi، نويسنده , , Liqi and Cao، نويسنده , , Huimin and Cheng، نويسنده , , Jiangong and Deng، نويسنده , , Changmin and Lin، نويسنده , , Tong، نويسنده ,
Abstract :
Two intramolecular dimmers of 4-, 8-pyrenyl-substituted fluorenes bridged 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 ∼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.
