Jiang Qian, Zhang Mingguang, Wang Zhonglong, Song Jie, Yang Yiqin, Li Wenchao, Gu Wen, Xu Xu, Xu Haijun, Wang Shifa
College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 P. R. China.
Department of Chemistry and Biochemistry, University of Michigan-Flint Flint MI 48502 USA.
RSC Adv. 2018 Aug 24;8(52):30055-30060. doi: 10.1039/c8ra05031g. eCollection 2018 Aug 20.
Four difluoroboron (BF) β-diketonate nopinone complexes 3a-3d that exhibited typical aggregation-induced emission (AIE) properties were synthesized using the natural renewable β-pinene derivative nopinone as the starting material. The thermal, photophysical, electrochemical and electroluminescent properties as well as the AIE properties of complexes 3a-3d were analyzed systematically. The data of photophysical and electrochemical demonstrated that compound 3b with a methoxy group exhibited the largest bathochromic shift, the highest absolute photoluminescence quantum yields and narrowest optical bandgap among 3a-3d. Using 3b as the emitter, electroluminescent (EL) device I exhibits blue-green light with CIE coordinates of (0.2774, 0.4531) and showed a better performance with a luminous efficacy ( ) of 7.09 lm W and correlated color temperature ( ) of 7028 K. The results demonstrate that new AIE compounds are promising solid-state luminescent materials with practical utility in electroluminescent materials.
以天然可再生的β-蒎烯衍生物诺蒎酮为起始原料，合成了四种具有典型聚集诱导发光（AIE）性质的二氟硼（BF）β-二酮诺蒎酮配合物3a - 3d。系统地分析了配合物3a - 3d的热、光物理、电化学和电致发光性质以及AIE性质。光物理和电化学数据表明，在3a - 3d中，带有甲氧基的化合物3b表现出最大的红移、最高的绝对光致发光量子产率和最窄的光学带隙。以3b为发光体，电致发光（EL）器件I发出蓝绿色光，CIE坐标为（0.2774, 0.4531），发光效率（ ）为7.09 lm W，相关色温（ ）为7028 K，表现出较好的性能。结果表明，新型AIE化合物有望成为在电致发光材料中具有实际应用价值的固态发光材料。
