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以对苯二胺、芳香醛为主要原料设计合成了两种具有空穴传输性能的双Schiff碱有机发光材料1,4-二(4-甲氧基苯基亚甲基)苯二胺(M1)和1,4-二(4-(N,N-二苯)氨基苯基亚甲基)苯二胺(M2)。通过FTIR、1H NMR和元素分析对其结构进行了表征,并考察了其UV-Vis吸收光谱、荧光光谱、电化学行为和热稳定性。实验结果表明,M1在溶液中能发射紫色荧光,而其固态薄膜则发射蓝色荧光;M2的溶液和固态薄膜均显示较强的绿色荧光;M1和M2的电离势分别为5.10,4.91 eV,与正电极的功函数(4.8 eV)相匹配,可有效降低空穴注入的能垒,有利于空穴的传输;M1和M2的热分解温度分别为375,350℃,均具有良好的热稳定性。
Two p-phenylenediamine and aromatic aldehyde as the main raw materials were designed and synthesized two kinds of double Schiff base organic light-emitting materials with hole transport properties of 1,4-bis (4-methoxyphenylmethylene) phenylenediamine (M1 ) And 1,4-bis (4- (N, N-diphenyl) aminophenylmethylene) phenylenediamine (M2). Its structure was characterized by FTIR, 1H NMR and elemental analysis. The UV-Vis absorption spectra, fluorescence spectra, electrochemical behavior and thermal stability were also investigated. The experimental results show that M1 can emit purple fluorescence in solution, while the solid film emits blue fluorescence; both M2 solution and solid film show strong green fluorescence; the M1 and M2 ionization potentials are 5.10 and 4.91 eV respectively, And the work function of the positive electrode (4.8 eV) match, which can effectively reduce the energy barrier of hole injection, is conducive to the hole transport; M1 and M2 pyrolysis temperature 375, 350 ℃, all have good thermal stability.