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三芳胺是传统的空穴传输材料,该文将其引入磷光配体2-苯基吡啶中,得到一种具有双重性质的磷光配体2,5-双〔4-(N,N-二苯基)氨基苯基〕吡啶,并通过元素分析,核磁共振氢谱对其结构进行了确认。通过比较其与另外两种磷光配体在二氯甲烷中的紫外吸收光谱和光致发光光谱表明,由于二苯胺这样一个强供电子性基团的引入,增强了π电子的离域范围,降低了这种磷光配体的HOMO轨道和LUMO轨道之间的能壑,使其最大吸收峰波长红移99 nm,最大发射峰波长红移48 nm,且吸收和发射的强度增加,Stokes位移为72 nm。
Triarylamine is a traditional hole-transporting material, which is introduced into the phosphorescent ligand 2-phenylpyridine to give a dual nature phosphorescent ligand 2,5-bis [4- (N, N-diphenyl Yl) aminophenyl] pyridine, and its structure was confirmed by elemental analysis and 1H nuclear magnetic resonance spectroscopy. By comparing the UV absorption spectrum with that of the other two phosphorescent ligands in dichloromethane, it was shown that due to the introduction of a strongly electron donating group such as diphenylamine, the delocalization range of π electron was enhanced and the The gully between the HOMO orbitals and the LUMO orbitals of this phosphorescent ligand red shifts the maximum absorption peak wavelength by 99 nm and the maximum emission peak wavelength by 48 nm, and the absorption and emission intensities increase with a Stokes shift of 72 nm .