CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
|
|
|
|
The Fluorescence Dynamics of Chlorophyll a and Sodium Magnesium Chlorophyllin |
WANG Ya-Lan1, ZHOU Zhang-Kai1,2, PENG Xiao-Niu1, ZHOU Li1**, HAO Zhong-Hua1**, WANG Qu-Quan1 |
1Department of Physics, Wuhan University, Wuhan 430072 2School of Physics and Engineering, SunYat-Sen University, Guangzhou 510275
|
|
Cite this article: |
WANG Ya-Lan, ZHOU Zhang-Kai, PENG Xiao-Niu et al 2013 Chin. Phys. Lett. 30 098702 |
|
|
Abstract The concentration dependence of the fluorescence spectra and lifetimes of chlorophyll a and sodium magnesium chlorophyllin are compared to explore the influences of intramolecular relaxation and intermolecular interaction of chlorophylls on the fluorescence dynamics. With different concentrations of chlorophyll a and sodium magnesium chlorophyllin in the suspensions, three different fluorescence emission bands are observed. Intermolecular interactions increase as the concentrations increase, which lead to redshifts in both fluorescence and lifetime spectra. Additionally, the lifetime is increased by re-absorption in the sodium magnesium chlorophyllin suspensions. These observations increase the understanding of the light harvesting and energy relaxation mechanisms of chlorophyll molecules.
|
|
Received: 21 June 2013
Published: 21 November 2013
|
|
PACS: |
87.15.M-
|
(Spectra of biomolecules)
|
|
33.50.Dq
|
(Fluorescence and phosphorescence spectra)
|
|
33.70.Ca
|
(Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factors)
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|