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À propos de : Unusual Temperature Dependence of Excited State Proton Transfer Rates in Alcohols        

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  • Unusual Temperature Dependence of Excited State Proton Transfer Rates in Alcohols
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  • The reversible proton dissociation and geminate recombination of photoacids is studied as a function oftemperature in alcohols. For this purpose we used a strong photoacid 5,8-dicyano-2-naphthol (DCN2) (p∼ −4.5 in water) that is capable to transfer a proton to alcohols. The experimental data are analyzed by theDebye−Smoluchowski equation solved numerically with boundary conditions to account for the reversibilityof the reaction. We propose a qualitative model to describe the unusual temperature dependence of the proton-transfer rate constant in alcohols in the liquid phase.
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