Fluorescence spectrum characteristic of ethanol--water excimer and mechanism of resonance energy transfer
Liu Ying(刘莹)a)b), Song Chun-Yuan(宋春元)a), Luo Xiao-Sen(骆晓森)b), Lu Jian(陆建)b), and Ni Xiao-Wu(倪晓武)a)b)†
a Department of Physics, Xuzhou Normal University, Xuzhou 221009, China; b College of Science, Nanjing University of Science Technology, Nanjing 210094, China
Abstract The steady-state fluorescence spectrum characteristic of ethanol--water excimer has been studied in this paper. By analysing the features of the sharp emission spectrum with fine structures in a shortwave band and the characteristics of the broad and featureless fluorescence peaks in the longwave band, one can conclude that the excimers are formed between the new ethanol--water cluster molecules in the excited state and the ground state through the interaction among different chromophores. The excitation spectra in the two fluorescence bands have been studied, and their emission mechanisms have been ascertained based on the energy transfer theory. Furthermore, the critical distance of the resonance energy transfer has been calculated.
Received: 08 March 2006
Revised: 27 November 2006
Accepted manuscript online:
PACS:
78.55.Bq
(Liquids)
Fund: Project supported by the cultivating innovation on graduate student of
Jiangsu Province, China (2004) and the Teaching and Research Award Program for
Outstanding Young Professor in Higher Education Institute, China (2003--2008).
Cite this article:
Liu Ying(刘莹), Song Chun-Yuan(宋春元), Luo Xiao-Sen(骆晓森), Lu Jian(陆建), and Ni Xiao-Wu(倪晓武) Fluorescence spectrum characteristic of ethanol--water excimer and mechanism of resonance energy transfer 2007 Chinese Physics 16 1300
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