Deactivation of 6-Aminocoumarin Intramolecular Charge Transfer Excited State through Hydrogen Bonding

被引：10
|
作者：
Krystkowiak, Ewa [1 ]
Dobek, Krzysztof [2 ]
Maciejewski, Andrzej [1 ,3 ]
机构：
[1] Adam Mickiewicz Univ, Fac Chem, PL-61614 Poznan, Poland
[2] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland
[3] Adam Mickiewicz Univ, Ctr Ultrafast Spect, PL-61614 Poznan, Poland
来源：
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2014年 / 15卷 / 09期
关键词：
6-aminocoumarin; solvatochromism; hydrogen bonding; donor-acceptor system; electronic excited state; energy gap law; COUMARIN LASER-DYES; SOLVATION ENERGY RELATIONSHIPS; PHOTOPHYSICAL PROPERTIES; RADIATIONLESS DEACTIVATION; QUANTUM YIELDS; FLUORESCENCE; SOLVENT; DERIVATIVES; EMISSION; DYNAMICS;
D O I：
10.3390/ijms150916628
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
This paper presents results of the spectral (absorption and emission) and photophysical study of 6-aminocoumarin (6AC) in various aprotic hydrogen-bond forming solvents. It was established that solvent polarity as well as hydrogen-bonding ability influence solute properties. The hydrogen-bonding interactions between S1-electronic excited solute and solvent molecules were found to facilitate the nonradiative deactivation processes. The energy-gap dependence on radiationless deactivation in aprotic solvents was found to be similar to that in protic solvents.
引用
收藏
页码：16628 / 16648
页数：21
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