Highly fluorescent intramolecular dimmers of two pyrenyl-substituted fluorenes bridged by 1,6-hexanyl: synthesis, spectroscopic, and self-organized properties
2010; Elsevier BV; Volume: 51; Issue: 9 Linguagem: Inglês
10.1016/j.tetlet.2009.12.136
ISSN1873-3581
AutoresChao He, Qingguo He, Qing Chen, Liqi Shi, Huimin Cao, Jiangong Cheng, Changmin Deng, Tong Lin,
Tópico(s)Synthesis and Biological Evaluation
ResumoTwo 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.
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