Salt effects on a proton transfer reaction of excited 1-naphthol in a solid/liquid interface layer. A picosecond time-resolved total internal reflection fluorescence study

Sanyo Hamai*, Naoto Tamai, Masatoshi Yanagimachi, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Analyses of the excited-state proton transfer reaction of 1-naphthol in sapphire/water interface layers have been performed using fluorescence decay data obtained by a picosecond time-resolved total internal reflection fluorescence spectroscopy. The rate constant of the excited-state proton transfer reaction, k1, of 1-naphthol in an interface layer was reduced as compared to that in a bulk aqueous solution. Addition of NaCl to aqueous solution of 1-naphthol resulted in a decrease in k1 for both in the interface layer and in the bulk solution, suggesting that a proton acceptor from excited 1-naphthol is not a single water molecule but a water cluster and that water clusters in an interface layer are also destroyed by NaCl.

Original languageEnglish
Pages (from-to)389-393
Number of pages5
JournalChemical Physics Letters
Volume229
Issue number4-5
DOIs
StatePublished - 4 Nov 1994

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