Surface plasmon studies of specific recognition reactions at self-assembled monolayers on gold

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Abstract

Specific recognition reactions of proteins at functionalized interfaces were observed with plasmon surface polariton (PSP) spectroscopy. This optical method offers a vertical resolution of about 0.2 nm in aqueous media. Different types of receptor surfaces were prepared, either by self-assembly of biotinylated alkane thiols or by specific adsorption of streptavidin monolayers. The corresponding substrates were streptavidin and a biotinylated monoclonal antibody. Their binding properties are inversely related to the packing density of the receptors. A good accessibility is only given in the case of a "diluted" presentation of the receptors at the interface. Both binding site and diffusion limited adsorption have been observed. © 1992.

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Schmitt, F. J., Häussling, L., Ringsdorf, H., & Knoll, W. (1992). Surface plasmon studies of specific recognition reactions at self-assembled monolayers on gold. Thin Solid Films, 210211(PART 2), 815–817. https://doi.org/10.1016/0040-6090(92)90412-5

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