Synthesis and properties of dicarbazolyltriphenylethylene-substituted fluorene derivatives exhibiting aggregation-induced emission enhancement

[摘要] Two novel dicarbazolyltriphenylethylene-substituted fluorene derivatives DctF and Dct 2 F were synthesized by the Wittig-Horner and Suzuki coupling reactions. It was reasoned that introducing linear alkyl chains into the fluorene structure could facilitate the deposition of high-quality films by an economical and simple process. The thin solid films of DctF and Dct 2 F show strongly enhanced emissions in comparison to their dilute solutions, which indicate the aggregation-induced emission enhancement (AIEE). Their decomposition temperatures ( T d ) exceed 400°C and the glass transition temperature ( T g ) of DctF is 105°C. The maximum fluorescence emission wavelengths are in the region of 458–469 nm.

[学科分类] 内科医学

[关键词] aggregation;carbazole;emission;fluorene;Suzuki coupling