Chloro benzoate cyanine picolinium photoacid excited-state proton transfer to water

Journal of Photochemistry and Photobiology A: Chemistry(2017)

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Abstract
•The excited-state proton transfer (ESPT) to water time-constant of the photoacid is 160fs.•The kinetic isotope effect in H2O and D2O is 1.7.•Intermolecular donor-acceptor vibration controls the ESPT rate.
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Key words
Excited-state proton transfer,Photoacid,Time-resolved fluorescence,Nonradiative rate,Kinetic isotope effect
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