title: Photophysics of ANS. IV. Electron transfer quenching of ANS in alcoholic solvents and mixtures.
abstract: ANS is observed to decay from the fluorescent state with distributed kinetics in nearly pure ethanol solvent, notwithstanding that in mixed ethanol/water solvents the decay is discrete and biexponential. The origin of this behavior is investigated. In particular, a theory of electron transfer theory in the adiabatic regime is adduced, with specific involvement of solvent cage structure in the form of the solvent-electron polaron wave function. Properties of various polarons for various solvent systems are predicted and, for the case of ethanol and cyclohexanol, employed to generate the observed Arrhenius-type decay parameters in a quantitative fashion.
authors.affiliation: Mayo Foundation, Rochester, MN 55902, USA. kirk.william@mayo.edu
authors.forename: William
authors.initials: W
authors.lastname: Kirk
authors.forename: William
authors.initials: W
authors.lastname: Wessels
mesh_terms: D000817:Anilino Naphthalenesulfonates / Q000737:chemistry*; D003511:Cyclohexanols / Q000737:chemistry; D004579:Electron Transport; D000431:Ethanol / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D005470:Fluorometry; D005990:Glycerol / Q000737:chemistry; D007700:Kinetics; D008956:Models, Chemical; D010777:Photochemistry; D055585:Physical Phenomena; D010825:Physics; D012997:Solvents / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D000817:Anilino Naphthalenesulfonates; D003511:Cyclohexanols; D005456:Fluorescent Dyes; D012997:Solvents; D014867:Water; D000431:Ethanol; C027132:1-anilino-8-naphthalenesulfonate; D005990:Glycerol