Ground and Excited State Properties of Some New Highly Water Soluble N-Substituted Thiazine Dyes For Photogalvanic Applications

David Creed, University of Southern Mississippi
Willie C. Burton, University of Southern Mississippi
Newton C. Fawcett, University of Southern Mississippi

Abstract

Increasing remote cationic charge on the thiazine dye chromophore greatly suppresses ground state aggregation in water, increases the rate constants for intersystem crossing and quenching of the triplet state (T₁) by Fe^II, and the fraction of T₁ reduced by Fe^II, but does not affect the self-quenching of T₁ by the ground state.