| Abstract: | The structurally ordered polymer, triphenylamine‐pendant polypeptide (PATPA: polyγ‐4‐(N,N‐diphenylamino‐phenyl)‐L ‐glutamine]), was prepared in order to obtain high hole mobility and high thermal stability. The hole mobility obtained for PATPA (ca. 10−5 cm2/Vsec) at room temperature is higher than that for poly(N‐vinylcarbazole) (PVK) (ca. 10−7 cm2/Vsec) or that of carbazole‐pendant polypeptide (PCLG) (ca. 10−8 cm2/Vsec). These results are supported by thermally stimulated current (TSC) measurements because the TSC can be correlated with the mobility. The glass‐transition temperature (Tg) of PATPA was estimated to be about 130° by differential scanning calorimetry (DSC). From these results, PATPA is an alternative candidate as a photoconductive polymer with high thermal stability and high hole mobility. The ordered structure along the main chain is thought to facilitate hole transport. © 2000 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 38: 362–368, 2000 |
