On the photo-stability of single molecules. Dibenzoterrylene in 2,3-dimethylnaphthalene crystals

被引：13

作者：

Deperasinska, I. ^{[1
]}

Karpiuk, E. ^{[1
]}

Banasiewicz, M. ^{[1
]}

Kozankiewicz, B. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 492卷 / 1-3期

关键词：

P-TERPHENYL; TERRYLENE; FLUORESCENCE; SPECTROSCOPY; NAPHTHALENE; SYSTEM;

D O I：

10.1016/j.cplett.2010.04.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fluorescence intensity traces of single dibenzoterrylene molecules in 2,3-dimethylnaphthalene crystals were studied at 270 K. It was found that these molecules are considerably more photo-stable than those of terrylene in the same crystal. Quantum-chemical calculations indicated that the creation of the reactive singlet oxygen state via the triplet state is not probable for dibenzoterrylene, in contrast to terrylene. This reaction provides the first step in typical hydrocarbon oxidation. Therefore, the lack of the triplet channel in the case of dibenzoterrylene, and its domination in the photo-oxidation of terrylene, may explain the different photo-stability of the two compounds. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：93 / 97

页数：5

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