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Determination of the First Excited Singlet State Dipole Moments of Coumarins by the Solvatochromic Method*

 

作者: Cyril Párkányi,   MagedShafik Antonious,   Jean-Jacques Aaron,   Michaela Buna,   Alphonse Tine,   Lamine Cissá,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1994）
卷期: Volume 27, issue 4  

页码: 439-449

 

ISSN:0038-7010

 

年代: 1994

 

DOI:10.1080/00387019408007249

 

出版商: Taylor & Francis Group

 

关键词: 4-Hydroxycoumarin;7-Hydroxycoumarin;7-Methoxycoumarin;7-Hydroxy-4-methylcoumarin;7-Amino-4-methylcoumarin;7-Diethylamino-4-methylcoumarin;Electronic Absorption Spectra;Fluorescence Spectra;Solvent Effects;Excited Singlet-State Dipole Moments

 

数据来源: Taylor

 

摘要:

The electronic absorption and fluorescence spectra of 4-hydroxycoumarin, 7-hydroxycoumarin, 7-methoxycoumarin, 7-hydroxy-4-methylcoumarin, 7-amino-4-methylcoumarin, and 7-diethylamino-4-methylcoumarin were measured at room temperature (298K) in several solvents and their first excited singlet-state dipole moments were determined by the solvatochromic shift method. The excited singlet-state dipole moments of the coumarins were compared with the ground-state values.

 

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