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| Type |
Poster Presentation |
| Area |
물리화학 |
| Room No. |
포스터발표장 |
| Time |
4월 20일 (목요일) 11:00~12:30 |
| Code |
PHYS.P-27 |
| Subject |
Fluorescence studies of the excited-state proton transfer of pyranine in the aqueous sugar and alcohol solutions |
| Authors |
홍영호, 조한국*, 정병서*
인천대학교 화학과, Korea
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| Abstract |
The excited-state proton transfer(ESPT) of a photoacid, pyranine has been studied in the several aqueous sugar solutions. Fluorescence emission from the normal and tautomer forms of the molecule was observed, and the ratios of fluorescence emission intensities of the two forms were measured as a function of sugar concentrations to determine the degree of the ESPT reaction. Comparisons were made with the results in the aqueous solutions of alcohols. Temperature-dependence of the ratio of fluorescence intensities of the normal and tautomer forms was interpreted on the basis of the van't Hoff equation, and the ratio was also correlated with the conductivity of the solution. The dynamic processes of the excited-state proton transfer of pyranine in the sugar and alcohol solutions were discussed. |
| E-mail |
hyh0838@gmail.com |
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119th General Meeting of the KCS