Dual fluorescence of single LH2 antenna nanorings

被引：10

作者：

Freiberg, A

Rätsep, M

Timpmann, K

Trinkunas, G

机构：

[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia

[2] Univ Tartu, Inst Mol & Cell Biol, EE-51010 Tartu, Estonia

[3] Inst Phys, LT-02300 Vilnius, Lithuania

来源：

JOURNAL OF LUMINESCENCE | 2004年 / 108卷 / 1-4期

关键词：

fluorescence; molecular nanoaggregates; self-trapped excitons;

D O I：

10.1016/j.jlumin.2004.01.025

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A dual nature of fluorescence from LH2 pigment-protein complexes, which is a part of the light harvesting system of purple bacteria, is confirmed by fluorescence-lifetime dependence on recording wavelength and spectrally selective spectroscopy. An analysis based on the Holstein molecular crystal model, modified by allowing diagonal disorder, suggests coexistence of large- and small-radius self-trapped excitons, which serve as the origin of the dual fluorescence. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：107 / 110

页数：4

共 9 条

[1] Self-trapped excitons in LH2 antenna complexes between 5 K and ambient temperature [J].