【摘要】 用化学方法制备了一种规则的片状三角形银纳米颗粒 ,边长为 10 0± 10nm ,厚度约为 30nm .紫外 可见光谱分析表明了三角形银纳米颗粒形貌的完整性 .颗粒表面修饰的有机分子 ,使三角形银纳米颗粒在碳膜上自组织形成二维单层膜 ,在硅片上形成高取向银膜 ,该银膜对吡啶分子具有很强的表面增强拉曼散射效应 ,增强因子可达 10 8.更多还原

【Abstract】 Triangular silver nanoplates with its border size of 100±10nm and thickness of 30nm were synthesized by a chemical method. These triangular silver nanoplates were characterized by TEM, UV Vis spectroscopy and x rays diffraction analysis. Results obtained showed that these triangular silver nanoplates are perfect with sharp corners and self assembled into two dimensional ordered monolayer on the carbon covered copper grid due to the adsorption of organic molecules in between these silver nanoplates. The well aligned silver film on Si (100) substrate showed strong surface enhanced Raman scattering for pyridine molecules.更多还原