【摘要】 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.更多还原

【Abstract】 A novel 1,4-di(pyren-1-yl)benzene derivative has been prepared using the Suzuki-Miyaura reaction,and its photophysical properties were examined to investigate their dependence on solvent and temperature,and their variation between the solution and the solid state.Compared to the unsubstituted analogue,the introduction of tert-butyl substitutents on the pyrenyl results in enhanced photoluminescent efficiency but only very small shifts in the absorption and emission maxima in the solid state compared to solution,which can probably be attributed to weaker intermolecular interactions and less excimer formation.The quantum yield of this compound in the solid state is impressive(0.82).更多还原