导电玻璃上自组装双层脂质膜的制备及其光电性质

Fabrication and photoelectric properties of self-assembled bilayer lipid membranes on conducting glass.

作者信息

Gao H, Luo G A, Feng J, Ottova A L, Tien H T

机构信息

Department of Chemistry, Tsinghua University, Beijing, China.

出版信息

J Photochem Photobiol B. 2000 Dec;59(1-3):87-91. doi: 10.1016/s1011-1344(00)00140-8.

DOI:10.1016/s1011-1344(00)00140-8

PMID:11332895

Abstract

Supported bilayer lipid membranes (s-BLMs with and without the doping of fullerene C60) self-assembled on indium-tin oxide (ITO) glass were fabricated and characterized by cyclic voltammetry and electrochemical impedance spectroscopy using a three-electrode system. The photoelectric properties of the ITO supported planar lipid bilayers were studied. Light intensity of irradiation, bias voltage, and concentration of donors have been found to be limiting factors of the transmembrane photocurrent. The facilitation effect of C60 doping in s-BLMs on the photoinduced electron transfer across s-BLM is discussed. This novel self-assembled ITO/s-BLM system may provide a simple and mechanically stable model for the study of the photoelectric and photodynamic properties of biomembranes.

摘要

制备了自组装在氧化铟锡（ITO）玻璃上的支撑双层脂质膜（掺杂和未掺杂富勒烯C60的s-BLM），并使用三电极系统通过循环伏安法和电化学阻抗谱对其进行了表征。研究了ITO支撑的平面脂质双层的光电特性。已发现辐照光强度、偏置电压和供体浓度是跨膜光电流的限制因素。讨论了C60掺杂到s-BLM中对光诱导电子穿过s-BLM转移的促进作用。这种新型的自组装ITO/s-BLM系统可能为研究生物膜的光电和光动力特性提供一个简单且机械稳定的模型。