Two low-cost 9-(2,2-diphenylvinyl)carbazole-based derivatives with aryl substitutions were synthesized by simple procedure and then investigated. The respective glass transition temperatures of the materials were estimated to be higher than 90 °C, which can provide morphologically-stable amorphous films for applications in organic light emitting diodes. The compounds possess adequate ionization potentials and suitable triplet energies, which make them suitable hole transporting materials for use in red phosphorescent organic light-emitting diodes. The respective peak efficiencies of the red devices with the p-type dopants were recorded at 8.7% (5.6 cd/A and 3.9 lm/W) and at 8.7% (5.4 cd/A and 3.8 lm/W), correspondingly, demonstrating high potential of the material for applications in light emitting diodes. The characteristics indicated that the devices with the aryl substituted 9-(2,2-diphenylvinyl)carbazoles exhibit better performance than those of widely used hole transporting 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) -based device.

通过简单的方法合成了两种低成本的具有芳基取代基的9-（2,2-二苯基乙烯基）咔唑基衍生物，然后对其进行了研究。估计材料的各自玻璃化转变温度高于90°C，这可以为有机发光二极管中的应用提供形态稳定的非晶膜。该化合物具有足够的电离势和合适的三重态能量，这使其成为用于红色磷光有机发光二极管的合适的空穴传输材料。带有p型掺杂剂的红色器件的峰值效率分别记录为8.7％（5.6 cd / A和3.9 lm / W）和8.7％（5.4 cd / A和3.8 lm / W），显示出很高的效率。材料在发光二极管中的电势。