Yang Sheng-Yi, Feng Zi-Qi, Fu Zhiyuan, Zhang Kai, Chen Song, Yu You-Jun, Zou Bo, Wang Kai, Liao Liang-Sheng, Jiang Zuo-Quan
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, China.
State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.
Angew Chem Int Ed Engl. 2022 Aug 22;61(34):e202206861. doi: 10.1002/anie.202206861. Epub 2022 Jul 8.
Organic materials with multi-stimulus response (MSR) properties have demonstrated many potential and practical applications. Herein, a π-stacked thermally activated delayed fluorescence (TADF) material with multi-stimulus response (MSR) properties, named SDMAC, was designed and synthesized using distorted 9,9-dimethyl-10-phenyl-9,10-dihydroacridine as a donor. SDMAC possesses a rigid π-stacked configuration with intramolecular through-space interactions and exhibits aggregation-induced emission enhancement (AIEE), solvatochromic, piezochromic, and circularly polarized luminescence (CPL) under different external stimuli. The rigid molecular structure and efficient TADF properties of SDMAC can be used in displays and lighting. Using SDMAC as an emitter, the maximum external quantum efficiency (EQE) of the fabricated organic light-emitting diodes (OLEDs) is as high as 28.4 %, which make them the most efficient CP-TADF OLEDs based on the through-space charge transfer strategy. The CP organic light-emitting diodes (CP-OLEDs) exhibit circularly polarized electroluminescence (CPEL) signals.
具有多刺激响应（MSR）特性的有机材料已展现出许多潜在的实际应用。在此，一种具有多刺激响应（MSR）特性的π堆积热激活延迟荧光（TADF）材料，名为SDMAC，以扭曲的9,9-二甲基-10-苯基-9,10-二氢吖啶作为供体进行设计与合成。SDMAC具有刚性的π堆积结构，存在分子内的空间相互作用，并在不同外部刺激下表现出聚集诱导发光增强（AIEE）、溶剂致变色、压致变色和圆偏振发光（CPL）。SDMAC的刚性分子结构和高效的TADF特性可用于显示和照明。以SDMAC作为发光体，所制备的有机发光二极管（OLED）的最大外量子效率（EQE）高达28.4%，这使其成为基于空间电荷转移策略的最高效的CP-TADF OLED。该圆偏振有机发光二极管（CP-OLED）表现出圆偏振电致发光（CPEL）信号。
