使用生物分子作用仪MP-SPR表征有机膦酸盐

2016-09-13 13:02  下载量:1

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使用生物分子作用仪MP-SPR表征有机膦酸盐:Phosphonic acids adsorption behavior was studied using Multi-Parametric Surface Plasmon Resonance (MP-SPR). Tetradecylphosphonic acid (TPA) adsorption onto di?erently treated gold surfaces was measured. Piranha and ammonia/hydrogenperoxide treatments were found to be the most optimal surface cleaning method for the SAM formation. TPA, vinylphosphonic acid (VPA), and octylphosphonic acid (OPA) adsorption onto the piranha treated surface was studied, and the thickness and the refractive index of the deposited layers were determined. The SAMs were 0.68 nm (VPA), 1.41 nm (OPA) and 1.73 nm (TPA) thick, thick, which is in good agreement with the expected molecular length.

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