Fabrication of an organic thin film having orientation or structure controlled at a molecular level

摘要

A metallic substrate is immersed as an electrode in an electrolyte solution dissolving an organic compound therein, and held at a controlled potential so as to hold electrochemical equilibrium between the organic compound and the metallic substrate. Thereby, the organic molecule is adsorbed onto the metallic substrate and grown up to a monomolecular adsorption film thereon.;The orientation or structure of the film is controlled by selection of a metallic substrate as well as control of an electrode potential. Since the organic film obtained in this way has orientation and/or structure controlled at a molecular level, it is useful as a functional film such as a liquid-crystalline oriented film, a photo-electric transfer element, a nonlinear element or a sensor.