ICCAS OpenIR
Two orientations and photochromism of polyelectrolyte/bacteriorhodopsin alternative deposition multilayers
Li, ML; Li, BF; Jiang, L; Tussila, T; Tkachenko, N; Lemmetyinen, H
2000-06-01
Source PublicationSCIENCE IN CHINA SERIES B-CHEMISTRY
ISSN1006-9291
Volume43Issue:3Pages:313-322
AbstractA series of organized multilayers have been formed by the alternative adsorption of positively charged poly(dimethyldiallylammonium chloride) (PDAC) and purple membrane (PM) fragments in suspensions at pH = 4-11. Both UV-vis spectrophotometry and quartz crystal microbalance (QCM) technique were used to monitor the deposition process of PDAC/bacteriorhodopsin (bR) multilayers, suggesting that PM fragments and PDAC are deposited alternatively on the substrate uniformly, Upon illumination, all these multilayers generate photovoltages with defined signs. The negative sign of photovoltage accompanying the formation of M-state at pH < 7 indicates that the extracellular side of PM fragments is directed toward the substrate; and the positive sign at pH greater than or equal to 7 indicates that the cytoplasmic side of PM fragments is directed toward the substrate. In addition, the long-lived multiple M-state has been observed in all multilayer films. Moreover, M-state at high pH, which shows the longer lifetime than that at low pH, decays into the ground state (B) completely in 30 min.
KeywordPurple Membrane Bacteriorhodopsin Photovoltage Uv-vis Adsorption Spectra
Indexed BySCI
Language英语
WOS IDWOS:000088248900013
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76502
Collection中国科学院化学研究所
Corresponding AuthorLi, BF
Affiliation1.Tampere Univ Technol, Inst Mat Chem, FIN-33101 Tampere, Finland
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Colloid & Interface, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Li, ML,Li, BF,Jiang, L,et al. Two orientations and photochromism of polyelectrolyte/bacteriorhodopsin alternative deposition multilayers[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2000,43(3):313-322.
APA Li, ML,Li, BF,Jiang, L,Tussila, T,Tkachenko, N,&Lemmetyinen, H.(2000).Two orientations and photochromism of polyelectrolyte/bacteriorhodopsin alternative deposition multilayers.SCIENCE IN CHINA SERIES B-CHEMISTRY,43(3),313-322.
MLA Li, ML,et al."Two orientations and photochromism of polyelectrolyte/bacteriorhodopsin alternative deposition multilayers".SCIENCE IN CHINA SERIES B-CHEMISTRY 43.3(2000):313-322.
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