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Optics Letters

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  • Vol. 21, Iss. 9 — May. 1, 1996
  • pp: 680–682

Red-shifted photochromic behavior of a bacteriorhodopsin film made from the L93T genetic variant

John D. Downie and Daniel T. Smithey  »View Author Affiliations


Optics Letters, Vol. 21, Issue 9, pp. 680-682 (1996)
http://dx.doi.org/10.1364/OL.21.000680


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Abstract

We present experimental results demonstrating the red-shifted photochromic behavior of a gelatin film made from L93T, a genetic variant of bacteriorhodopsin. The red shift of the absorbance spectrum on illumination with visible light is due to a short M-state lifetime and a longer-lived O state whose absorption peaks at 610 nm. Pump–probe measurements show the O state to have a lifetime of approximately 2.2 s in the gelatin film, with a single exponential decay behavior. We also present holographic kinetic results for both red (633-nm) and blue (442-nm) readout wavelengths.

© 1996 Optical Society of America

History
Original Manuscript: October 30, 1995
Published: May 1, 1996

Citation
John D. Downie and Daniel T. Smithey, "Red-shifted photochromic behavior of a bacteriorhodopsin film made from the L93T genetic variant," Opt. Lett. 21, 680-682 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-9-680


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