【摘要】 芴类化合物作为有机电致发光材料近年来引起了人们的广泛关注,其具有高亮度和高工作效率等性能.本论文采用量子化学方法研究了一种新型的芴类发光材料,9,9-二-(3-(9-苯咔唑基))-2,7-芘基芴的光电性质.具体研究内容包括基态和激发态几何结构、前线分子轨道、能隙、电离能、电子亲和势、重组能以及吸收光谱和发射光谱等.理论计算结果表明,9,9-二-(3-(9-苯咔唑基))-2,7-芘基芴发射光谱为450.6 nm,其在电致发光器件应用上是一种具有开发前景和实用价值的蓝光发光材料.更多还原

【Abstract】 Fluorene derivatives have attracted considerable attention in recent years as organic light-emitting materials due to their high brightness and high performance.In this paper,theoretical analysis on optoelectronic properties of a novel emitting material,9,9-bis-(3-(9-phenyl-carbazoyl))-2,7-dipyrenylfluorene(DCDPF) is systematically characterized by quantum-chemical methods.And the authors pay attention to its geometric structures of the ground state and excited state,frontier molecular orbital,energy gap,ionization potential,electron affinity,reorganization energy,absorption and emission spectra.All the calculated results show that the molecule gives rise to fluorescent emission at 450.6 nm and is promising as a blue light emitting material in the organic light-emitting diodes(OLEDs).更多还原