Abstract
Abstract The proton-transfer reactions to solvent from electronically excited o-, m-, and p-(trifluoromethyl)phenols (TFOHs) in water have been investigated by picosecond time-resolved fluorescence measurements. The rate constants for the proton dissociation of o-, m-, and p-TFOH are obtained to be 2.2×109, 8.6×108, and 2.5×108 s−1, respectively. On the basis of the rate constants, the effects of substituent and deuterium isotope effects on the proton-transfer reactions are revealed.
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