Charge Transport Property in the Lyotropic Liquid Crystalline Cell Composed of Carbazolyl Groups Pendant Poly(glutamate)

Polypeptide having carbazolyl groups (poly-γ-[2-(9-carbazolyl) ethyl]-L-glutamate) (PCLG) was synthesized in order to prepare a lyotropic liquid crystalline cell with higher mobility. Typical Time-Of-Flight (TOF) method was employed to analyze its charge transport property. Transient photocurrent for the liquid crystalline cell showed nondispersive transport property. Relatively high drift mobility of ca.10-3 (cm2/V·s) was obtained in the cell composed of PCLG with both intra and interchain ordered structure.