Characterization of self-assembled monolayers for biosensor applications

被引:62
作者
Nyquist, RM [1 ]
Eberhardt, AS [1 ]
Silks, LA [1 ]
Li, Z [1 ]
Yang, X [1 ]
Swanson, BI [1 ]
机构
[1] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA
关键词
D O I
10.1021/la990018r
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Mixed monolayers of thiol-terminated poly(ethylene glycol) (PEG) and thioacetyl GM1 glycolipid on Au(lll) were examined utilizing atomic force microscopy, infrared spectroscopy, and grazing incidence X-ray diffraction to determine the composition, structure, and morphology and to characterize the specific and nonspecific interactions with protein. These monolayer architectures are robust and are readily controlled to provide a network of receptor GM1 in the PEG-terminated matrix. However, we also find significant levels of nonspecific and nonnative protein binding that reader this simplistic model system unsuitable for highly sensitive biosensor device applications.
引用
收藏
页码:1793 / 1800
页数:8
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