Synthesis, Characterization and Properties of Some Novel Structural Asymmetric Triarylamines

Four structural asymmetric triarylamines were synthesized by diarylamines and 3,5-dimethyl-iodobenzene as the starting materials using Ullmann reaction. They are new compounds except the compound I. The structures of the target compounds were characterized by IR, H-1 NMR, C-13 NMR, HRMS and elemental analysis. The optical, electrochemical, and thermal properties were examined. The results indicated that the synthesized compounds emitted green fluorescence in chloroform, and exhibited a good electrochemical and thermal stability. The synthesized triarylamines are potential hole-transporting materials and green-light-emitting materials.