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Proceedings Paper

Photochromic properties of chemically modified bacteriorhodopsin films
Author(s): Bing Liang; Liqian Li; Meiling Li; Baofang Li; Long Jiang
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Paper Abstract

The lifetime of M-state in the bacteriorhodopsin photocycle was remarkably prolonged in bR-gelatin film by using 1,4,7,10-tetraoxa-13- azacyclopentadecane (aza-15-crown-5) as chemical additive. Spectral and kinetic measurements were carried out at room temperature. It is observed that the M-state in the film has a long lifetime ((tau) 1/e) of 360s with bR/aza-15-crown-5 weight ratio of 1:3 under room conditions. To investigate the mechanism of aza-15-crown-5 on the photocycle of bR 15-crown-5 was used as chemical additive too. It was suggested that the strong complexing property towards H+ of aza-15- crown-5 played an important role in the prologation. The fitting of the M-state decay kinetics curves corresponded to a sum of three and two exponential components for bR-films using aza-15-crown-5 and 15-crown-5 as chemical additive respectively.

Paper Details

Date Published: 13 November 2000
PDF: 7 pages
Proc. SPIE 4104, Organic Photorefractives, Photoreceptors, and Nanocomposites, (13 November 2000); doi: 10.1117/12.406479
Show Author Affiliations
Bing Liang, Institute of Chemistry (China)
Liqian Li, Institute of Chemistry (China)
Meiling Li, Institute of Chemistry (China)
Baofang Li, Institute of Photographic Chemistry (China)
Long Jiang, Institute of Chemistry (China)


Published in SPIE Proceedings Vol. 4104:
Organic Photorefractives, Photoreceptors, and Nanocomposites
Keith L. Lewis; Klaus Meerholz; Klaus Meerholz, Editor(s)

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