Two-photon excited fluorescence and molecular reorientations in liquid solutions

被引：6
|
作者：
Ryderfors, Linus
Mukhtar, Emad
Johansson, Lennart B. -A. [1 ]
机构：
[1] Umea Univ, Dept Chem Biophys Chem, S-90187 Umea, Sweden
[2] Univ Uppsala, Dept Photochem & Mol Sci, S-75120 Uppsala, Sweden
来源：
JOURNAL OF FLUORESCENCE | 2007年 / 17卷 / 05期
关键词：
two-photon excited fluorescence; two-photon excited fluorescence depolarisation; two-photon excited anisotropy; theory of rotational motion; rotational diffusion; librations; perylene;
D O I：
10.1007/s10895-007-0189-x
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Theoretical expressions are derived that relate the two-photon excited fluorescence depolarisation experiments to the molecular symmetry and the rotational motions of fluorescent molecules. Diffusive rotational motions in liquid solvents are considered, as well as the influence of fast unresolved motions (e.g. librations). The results obtained are compared with one-photon excited fluorescence depolarisation experiments. The derived theoretical expressions can be applied for detailed analyses of the molecular rotation in solvent. Several of the results are useful for determining and assigning the components of two-photon absorption tensors.
引用
收藏
页码：466 / 480
页数：15
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