Kinetics of picosecond laser pulse induced charge separation and proton transfer in bacteriorhodopsin

doi:10.1117/1.1527626

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	Kinetics of picosecond laser pulse induced charge separation and proton transfer in bacteriorhodopsin
	Yao, BL ; Xu, DL ; Hou, X ; Hu, KS ; Wang, AJ ; Yao Baoli
作者部门	瞬态光学国家重点实验室
	2003
发表期刊	JOURNAL OF BIOMEDICAL OPTICS
ISSN	1083-3668
卷号	8 期号:1 页码:48-52
摘要	Bacteriorhodopsin (BR) films oriented by an electrophoretic method are deposited on a transparent conductive ITO glass. A counterelectrode of copper and gelose gel is used to compose a sandwich-type photodetector with the structure of ITO/BR film/gelose gel/Cu. A single 30-ps laser pulse and a mode-locked pulse train are respectively used to excite the BR photodetector. The ultrafast failing edge and the bipolar response signal are measured by the digital oscilloscope under seven different time ranges. Marquardt nonlinear least squares fitting is used to fit all the experimental data and a good fitting equation is found to describe the kinetic process of the photoelectric signal. Data fitting resolves six exponential components that can be assigned to a seven-step BR photocycle model: BR-->K-->KL-->L-->M-->N-->O-->BR. Comparing tests of the BR photodetector with a 100-ps Si PIN photodiode demonstrates that this type of BIR photocletector has at least 100-ps response time and can also serve as a fast photoelectric switch. (C) 2003 Society of Photo-Optical Instrumentation Engineers.
文章类型	Article
关键词	Bacteriorhodopsin Photodetectors Photoelectric Kinetics
学科领域	光学
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI	10.1117/1.1527626
收录类别	SCI ; EI
关键词[WOS]	MEMORIES ; PROTEIN
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
WOS类目	Biochemical Research Methods ; Optics ; Radiology, Nuclear Medicine & Medical Imaging
WOS记录号	WOS:000180755400006
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.opt.ac.cn/handle/181661/7276
专题	瞬态光学研究室
通讯作者	Yao Baoli
作者单位	1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt Technol, Xian 710068, Peoples R China 2.Chinese Acad Sci, Inst Biophys, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Yao, BL,Xu, DL,Hou, X,et al. Kinetics of picosecond laser pulse induced charge separation and proton transfer in bacteriorhodopsin[J]. JOURNAL OF BIOMEDICAL OPTICS,2003,8(1):48-52.
APA	Yao, BL,Xu, DL,Hou, X,Hu, KS,Wang, AJ,&Yao Baoli.(2003).Kinetics of picosecond laser pulse induced charge separation and proton transfer in bacteriorhodopsin.JOURNAL OF BIOMEDICAL OPTICS,8(1),48-52.
MLA	Yao, BL,et al."Kinetics of picosecond laser pulse induced charge separation and proton transfer in bacteriorhodopsin".JOURNAL OF BIOMEDICAL OPTICS 8.1(2003):48-52.

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