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Laser-induced bacteriorhodopsin LB films’ fast photoelectric dynamics

  • Baoli Yao
  • Dalun Xu
  • Xun Hou
  • Baofang Li
  • Long Jiang
Article
  • 22 Downloads

Abstract

Ten layers of oriented bacteriorhodopsin (BR) LB films are prepared on ITO conductive glass to constitute an ITO electrode/BR LB films/KCl solution/Cu electrode wet photocell. A Q-switched double frequency Nd:YAG laser with 10 Hz repetitive rate and 8 ns pulse width is used to excite the BR LB films. The photoelectric signal is directly captured by a 300 MHz digitizing oscilloscope. A theory on the BR photoelectric dynamics is established. By nonlinear least square fitting of the experimental curves acquired at different time bases, the experimental equation corresponding to the theoretical model is obtained, and the charge displacements and the decay time constants for each step in the BR photocycle are calculated.

Keywords

bacteriorhodopsin LB film photoelectric dynamics 

References

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Copyright information

© Science in China Press 1997

Authors and Affiliations

  • Baoli Yao
    • 1
  • Dalun Xu
    • 1
  • Xun Hou
    • 1
  • Baofang Li
    • 2
  • Long Jiang
    • 2
  1. 1.State Key Laboratory of Transient Optics and TechnologyXi’ an Institute of Optics and Precision Mechanics, Chinese Academy of SciencesXi’ anChina
  2. 2.Institute of Photographic ChemistryChinese Academy of SciencesBeijingChina

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