Second order hyperpolarizability of hydroxystilbazolium salts and their betaines-relationship to chemical structure

Abstract

Amphiphilic hydroxystilbazolium cations and their corresponding neutral betaines exhibit large off-resonant positive and negative, respectively, second order hyperpolarizabilities which were measured by DFWM and Z-scan experiments. Quantitative structure-property relations were established from semi-empirical calculations.

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