Nonlinear Optical Property of Poly(Phenylenevinylene) Bearing π-Conjugated Radicals

Abstract

The third order nonlinear optical susceptibility, χ(3), of an open-shell and alternant polymer based on a π-conjugated polymer, poly(1,2-phenylenevinylene) bearing phenoxyl radicals at 4-position, was evaluated. The real and imaginary parts of χ⁽³⁾ of the poly(1,2-phenylenevinylene) derivative were enhanced three orders of magnitude at ca. 680 nm and reached ca. 10⁻⁹ esu due to the phenoxyl radical formation.

Key Words:

• polyradical
• π-conjugated polymer
• nonlinear optical susceptibility
• poly(phenylenevinylene)
• phenoxyl radical