The energy band structures of poly-TPD(PTPD) have been characterized by combining cyclic voltammetry(CV) with UVVis absorption.The influence of the molecule structure of introduced group on the band structure is investigated.It is indicated that the energy band structures of PTPD have few change after TPD is polymerized through the maximum UV-VIS absorption spectrum of polymer PTPD and molecule TPD in trichloromethane and the materials have a better electrochemistry stability through the curve of cyclic vol...