【摘要】 制备了两种不同电性的纳米银粒子的脉体 ,发现当邻菲罗啉分子分别吸附在这两种纳米银上时 ,其表面增强喇曼谱有明显的不同 .在正电性纳米银上 ,面外弯曲模式受到增强 ,而在负电性纳米银上 ,面内伸缩模式受到增强 ,通过分析增强谱的差异表明 ,分子在这两种不同电性胶态纳米银表面上可能分别以平躺及站立方式吸附 .更多还原

【Abstract】 Both negatively and positively charged colloids (for short,PCS and NCS) with nano-silver particles were prepared.Surface enhanced Raman scattering (SERS) from 1,10-Phenanthroline molecules on the two colloids of nano-silver particles were recorded respectively and compared with each other.The results show that there are lot of different SERS spectra observed when the molecule was adsorbed on the NCS and PCS.That indicates the molecule adsorbs on the two kinds of silver surface in different way.The geometry of 1,10-Phenanthroline on the PCS is "flat on" adsorption and on the NCS is "stand on" adsorption.更多还原