Small-molecule based thermally activated delayed fluorescence materials with dual-emission characteristics

• 作者: Xuping Li Shen Shen Chenchen Zhang Miaoqing Liu Jianjun Lu Liangliang Zhu
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: REVIEWS
• 页码范围: 534-546
• 页数: 13页
• 语种: 英文

摘要

Organic thermally activated delayed fluorescence (TADF) emitters have attracted increasing concerns,owing to their atypical photophysical features that can pave the way to the innovative engineering applications.As cutting-edge type of luminescent molecules,however,most of them only exert a single-wavelength emission from the lowest excited state,according to Kasha's rule.To develop their potential applications in multicolor luminescence and multi-functional luminescent probes for biological imaging,researchers have begun to turn their attention to design organic TADF molecules with dual-emission characteristics,by employing an additional fluorescence,phosphorescence,or TADF signal within a single-component system.We herein summarized the design principles as well as the luminescence mechanism of organic donor-acceptor TADF compounds with dual-emission characteristics,the superiority of which can cover unique material applications in modern luminescencerelated fields.