First Hyperpolarizability and Multiphoton Induced Fluorescence in Different Forms of Polyaniline

Abstract

The first hyperpolarizability β per monomeric residue of polyaniline in three oxidation states and in the doped emeraldine salt form was determined by hyper-Rayleigh scattering. Multiphoton induced fluorescence was observed and, together with light absorption at the fundamental (ω) and double (2ω) frequencies was taken into account in the calculation of β.