Abstract
Substances showing insulator-to-conductor conversion by irradiation of light may have a potential for novel highly functional materials. Our purpose of the study is to develop a novel photochemical doping reaction for generation of electrical conductivity. Tetrtacyanoquinodimethane(TCNQ) has been known to show electrical conductivity upon partial doping of electrons. If TCNQ is doped by a sacrificial donor which releases electron irreversibly by photochemical reactions, photo-generation of conductivity is expected. The Langmuir-Blodgett (LB) technique was employed in this study, which has been used to fabricate thin-film molecular assemblies. LB films prepared as alternating layers of octadecyl-TCNQ and the donor on interdigitated array electrode, upon photo-irradiation, showed conductivity by the doping reaction.
