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

页码：16628 / 16648

页数：21

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