Novel synthetic methods of condensation polymers and their applications as new composite and optoelectronic materials

Abstract

A direct polycondensation reaction, which is carried out by using phosphorylating agents such as triphenylphosphine as an initiator, was applied to the in-situ formation of various condensation polymers including high temperature polymers within various matrix polymers so that those rigid rod-like polymers were well dispersed within the matrix polymers. Improvements in tensile strength and modulus of the matrix polymers were achieved and new concept of molecular composite materials was established. Ultra thin films of high temperature polymers such as poly(benzimidazole) (PBI) or poly(benzthiazole)(PBT) were successfully formed at air/water interface by using Langmuir-Blodgett method. Thgse ultra-thin films of high temperature polymers were quite stable up to 300UC and were highly insulative for electric current. They also exibited interesting behaviors in terms of Non-Linear Optical properties. © 1991 IUPAC