화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.294, 245-250, 1997
3rd-Order Nonlinear-Optical Properties of One-Dimensional Conjugated Polymers
We have measured third-harmonic susceptibilities in various one-dimensional conjugated polymer films at a fundamental wavelength of 1.907 mu m. The relationship between polymer structure and the third-order nonlinear optical responses of four kinds of processable conjugated polymer systems were studied : substituted polyacetylenes, polyaniline, polythiophene derivatives and poly(p-phenylene benzothiazole). We discuss the influence of planarity and conformation on the effective conjugation and also demonstrated the alignment of polymer chain by stretching and flow orientation to obtain the enhanced third-order nonlinear optical susceptibility.