Studies on poly(ethylenimine)/purple membrane multilayer films fabricated by layer-by-layer self-assembly

被引：6
|
作者：
Chu, JF [1 ]
Li, XC [1 ]
Tang, J [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Colloid & Interface Sci, Beijing 100080, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2005年 / 257-58卷
关键词：
bacteriorhodopsin; purple membrane; poly(ethylenimine); layer-by-layer assembly; films;
D O I：
10.1016/j.colsurfa.2004.10.075
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the present work. we have obtained organized PEI/PM (poly(ethylenimine)/purple membrane) multilayer films by layer-by-layer alternate adsorptions with positively charged polycation PEI and negatively charged purple membrane fragments. The results observed by UV-vis spectroscopy show that each transfer amount of PNI fragments onto the substrate is equal and the characteristic absorption bands of bacteriorhodopsin (bR) are still preserved. AFM and SEM analysis investigated the morphology and cross-section of PM films, respectively. The photocurrent peaks of (PEI/PM)(6) multilayer films corresponding to light-on and light-off are ca. 440 and 250 nA/cm(2). (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：41 / 45
页数：5
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