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利用Suzuki偶联反应,合成了一种新的二芘基苯的衍生物2,5-二甲基-1,4-双(7-特丁基-1-)芘基苯,并研究了其吸收和发光性质随着溶剂和温度等条件的变化情况.实验表明,与不含特丁基的类似化合物相比,引入特丁基可以明显减弱分子间作用并避免激基缔合物的形成,因而在保持吸收和发射光谱的谱形及峰位基本不变的同时显著地增强了荧光发光效率.该化合物的固态荧光量子效率高达0.82.
A novel 2,5-dimethyl-1,4-bis (7-tert-butyl-1-) pyrenylbenzene derivative of dipenylbenzene was synthesized by Suzuki coupling reaction. Absorption and luminescence properties with the solvent and temperature conditions.The experimental results show that the introduction of t-butyl can significantly reduce the intermolecular interaction and avoid the formation of excimer, compared with similar compounds without t-butyl, Thus, the fluorescence emission efficiency is remarkably enhanced while keeping the spectrum shape and the peak position of the absorption and emission spectra substantially unchanged, and the solid-state fluorescence quantum efficiency of the compound is as high as 0.82.