THIN CHEMICALLY ANISOTROPIC POLYPORPHYRIN FILMS WITH POTENTIAL APPLICATION IN NONLINEAR OPTICS

Following our studies on anisotropic polymer films, we have investigat ed the interfacial polymerization of porphyrins bearing functional gro ups (e.g. amine and acid chloride or carbonyl and hydroxyl groups) whi ch leads to thin films which have an asymmetry of functional groups at the surfaces. The structure of such films was characterized. Further investigations were carried out by means of the self-assembly method o f deposition of arachidic acid (a model substance) onto these films. T hey show that ordered, thermally stable layers can be obtained. These results demonstrate that novel, organic thin films can be used as a su pport for various amphiphilic and polar molecules leading to interesti ng and controlled, thin layered systems.