引用本文:
高放, 杨永源. 香豆素酮染料光谱性质的研究[J]. 物理化学学报,
1999, 15(06): 550-554.
doi:
10.3866/PKU.WHXB19990613
Citation: Gao Fang, Yang Yong-Yuan. Spectra Studies of Ketocoumarin Dye[J]. Acta Physico-Chimica Sinica, 1999, 15(06): 550-554. doi: 10.3866/PKU.WHXB19990613
Citation: Gao Fang, Yang Yong-Yuan. Spectra Studies of Ketocoumarin Dye[J]. Acta Physico-Chimica Sinica, 1999, 15(06): 550-554. doi: 10.3866/PKU.WHXB19990613
English
Spectra Studies of Ketocoumarin Dye
Abstract:
Ketocoumarin dye 3-acetyl-7-diethylaminecoumrin was synthesized and charaterized. The spectra and photophysics behavior were studied in different aprotic solvents. Results showed that the fluorescence quantum yield had a maximum and the ratio of non-radiative transition rate to radiative transition rate had a minimum with the increasing of the solvent polarity. Also, the fluorescence of the dye can be quenched by triethylamine and the change is in accordance with the Stern-Volmer formula. These phenomenon was discussed preliminarily.
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Key words:
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Aprotic solvent effect
- / Ketocoumarin dye
- / Spectrum
- / Fluorescence quantum yield
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