Photo-induced morphology transition of a multifunctional photochromic bisthienylethene molecule with switchable aggregation-induced emission

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2018,（10）
• 页码范围: 1301-1306
• 页数: 6页
• 语种: 英文

摘要

A novel multifunctional molecule BTE-CNPH was designed and synthesized by connecting 2-(3',5'-bis(trifluoromethyl)-biphenyl-4-yl)-2-cyanovinyl group to both side of the bisthienylethene (BTE),which exhibited excellent aggregation-induced emission (AIE) and bistable photochromism.High-contrast (＞60) reversible fluorescence switching was achieved in the 1D nanowires,solid of BTE-CNPH and also in a polymethyl methacrylate (PMMA) film loaded with 1％ BTE-CNPH under the alternative irradiation by 365 nm and visible light.Interestingly,the nanowire-like assembly morphology of BTE-CNPH in aqueous tetrahydrofuran (THF) solution of specific concentration was observed to translate into amorphous pieces gradually upon prolonged irradiation by the 365 nm,accompanying with photo-tunable AIE emission.