共价结合法制备细菌视紫质分子薄膜及薄膜光电特性与微结构

Foreparation of Bacteriorhodopsin Molecular Films by Covalent Coupling Method and Investigation of the Photoelectric Properties of Films and Observation of Films Appearance

本文报导了一种引入活性基团共价结合细菌视紫质制备分子薄膜的方法,并对该分子膜的光电压、光电流、光谱响应、光强影响、响应时间和弛豫时间进行了测定。发现其光电压和光电流的产生随光照强度的增加而增加,当入射光功率密度为1mW/cm^2时,可产生光电流密度为9.6×10^(-8)A/cm^2和光电压密度为11.6mV/cm^2,响应时间为1s,弛豫时间3.5s。同时借扫描电镜术对分子薄膜的形貌进行了观察。

A method preparing Bacteriorhodopsin molecular films by covalent binding withactive groups was reported. The photovoltage, photocurrent, spectrum response,effect of light intensity, response time and relaxing time of molecular films weredetermined. It was found that the photovoltage and photocurrent were increased withthe increase of light intensity. The greatest photocurrent and photovoltage of mole-cular films were 9.6×10^(-8)A/cm^2.mW and 11.6mV/cm^2. mW, respectively. The res-ponse time and relaxing time of molecular films were 1s and 3.5s, respectively. Theappearance of molecular films were observed by scanning electronic microscope.