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

✍ Scribed by Sanyo Hamai; Naoto Tamai; Masatoshi Yanagimachi; Hiroshi Masuhara

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 494 KB
• Volume: 229
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)01087-0

✦ Synopsis

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, k,, of I-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 k, 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.