铈离子与银表面NAD自组装单分子层作用的SERS光谱研究

The SERS Observation of Impact of the Ce^(3+) on the Structure of NAD Monolayers at the Silver Surface

本文采用表面增强拉曼光谱,观察了稀土三价铈离子与银表面NAD自组装单层膜的相互作用。实验结果和PM3理论计算表明,三价铈离子是与NAD+分子中磷酸酯及核糖部分发生配位,从而影响单分子层的吸附结构。

The structure of NAD^＋ monolayers at the silver surface and the impact of Ce^3＋ on it were investigated by using SERS spectroscopy. The results of spectra and vibration calculations with PM3 method suggest that Ce^3＋ trend to form complex with the phosphate and ribose on the nicotinamide side of NAD^＋, leading to the change of its adsorption mode.