中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1300-1306.doi: 10.1088/1009-1963/16/5/023

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Fluorescence spectrum characteristic of ethanol--water excimer and mechanism of resonance energy transfer

骆晓森1, 陆建1, 宋春元2, 刘莹3, 倪晓武3   

  1. (1)College of Science, Nanjing University of Science Technology, Nanjing 210094, China; (2)Department of Physics, Xuzhou Normal University, Xuzhou 221009, China; (3)Department of Physics, Xuzhou Normal University, Xuzhou 221009, China;College of Science, Nanjing University of Science Technology, Nanjing 210094, China \\
  • 收稿日期:2006-03-08 修回日期:2006-11-27 出版日期:2007-05-20 发布日期:2007-05-20
  • 基金资助:
    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).

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)†   

  1. a Department of Physics, Xuzhou Normal University, Xuzhou 221009, China; b College of Science, Nanjing University of Science Technology, Nanjing 210094, China
  • Received:2006-03-08 Revised:2006-11-27 Online:2007-05-20 Published:2007-05-20
  • Supported by:
    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).

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摘要： 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.

关键词: fluorescence spectrum, energy transfer, ethanol--water cluster, excimer

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.

Key words: fluorescence spectrum, energy transfer, ethanol--water cluster, excimer

中图分类号:  (Liquids)

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