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通过氢键作用使6-氨基香豆素分子内电荷转移激发态失活。

Deactivation of 6-aminocoumarin intramolecular charge transfer excited state through hydrogen bonding.

作者信息

Krystkowiak Ewa, Dobek Krzysztof, Maciejewski Andrzej

机构信息

Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, Poznań 61-614, Poland.

Faculty of Physics, Adam Mickiewicz University in Poznań, Umultowska 85, Poznań 61-614, Poland.

出版信息

Int J Mol Sci. 2014 Sep 19;15(9):16628-48. doi: 10.3390/ijms150916628.

DOI:10.3390/ijms150916628
PMID:25244014
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4200807/
Abstract

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.

摘要

本文介绍了6-氨基香豆素（6AC）在各种非质子性氢键形成溶剂中的光谱（吸收和发射）及光物理研究结果。研究发现，溶剂极性以及氢键形成能力会影响溶质性质。S1电子激发态溶质与溶剂分子之间的氢键相互作用被发现会促进非辐射失活过程。非质子性溶剂中能隙对无辐射失活的依赖性被发现与质子性溶剂中的情况相似。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/5fbf3f5c3bd9/ijms-15-16628-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/82fc04c383ee/ijms-15-16628-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/42ee13e3a5e7/ijms-15-16628-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/7dcddd8e32c9/ijms-15-16628-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/d36eb9ec7dc4/ijms-15-16628-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/5fbf3f5c3bd9/ijms-15-16628-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/82fc04c383ee/ijms-15-16628-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/42ee13e3a5e7/ijms-15-16628-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/7dcddd8e32c9/ijms-15-16628-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/d36eb9ec7dc4/ijms-15-16628-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61ba/4200807/5fbf3f5c3bd9/ijms-15-16628-g006.jpg

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