Abstract:High values of the first (b) and second (g) hyperpolarizabilities were obtained for the halogenated oligomers of the three neutral forms of polyaniline (pernigraniline, emeraldine, and leucoemeraldine). For enhancement of the b and g magnitudes, the t-butyl, t-butoxy, and dimethylamine electron donor groups were introduced into various halogenated oligomers. The effect of the oligomer chain size on the b and g magnitude was also investigated by considering the aniline trimers and hexamers. The highest value of… Show more
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