Abstract

Electric and optical properties of organic charge-transfer (CT) compounds have been attracted a lot of attention from both fundamental science and practical applications. Remarkable progress have been made in development of electroactive CT materials such as organic metals, conducting polymers, and organic photoconductor. Recently organic intracharge transfer compounds have been experimentally and theoretically elucidated to exhibit anomalously large nonlinear optical responses.¹ Nonlinear optical properties of several CT complex systems have been studied and recently photorefractive effects have been observed in CT complex crystal and poled photo- conductive polymers. These poled polymers consist of three components: the nonlinear optically active chromophore (NLO-phore) to provide the electro-optic response, a hole transporting molecule and a photosensitizer which exhibit photoconductive properties.²

© 1993 Optical Society of America