银颗粒表面尿嘧啶分子的SERS实验研究——KCl对尿嘧啶分子吸附状态的影响  

Experimental SERS study of the uracil adsorbed on aqueous silver sol——the influence of KC1 on the orientation of uracil adsorbed on silver sol

作　　者：刘西社[1] 李雷 郑克哲[1] 张鹏翔[2] 赵铁南 傅克德[3] 王天真[3] 苗润才[3] 

机构地区：[1]西安应用光学研究所,西安710100 [2]中国科学院物理研究所,北京100080 [3]陕西师范大学物理系,西安710062

出　　处：《光学学报》1993年第3期234-238,共5页Acta Optica Sinica

基　　金：国家自然科学基金资助课题

摘　　要：利用表面增强喇曼散射(SERS)在灰银胶体系中研究了KCl对尿嘧啶分子吸附状态的影响,并将实验结果与Oh等人在黄银胶体系中的实验结果进行了详细比较.对这一实验现象进行了定性解释.The influence of KCl on the orientation of the Uracil molecules adsorbed on the grey aqueous silver sol has been studied by means of surface enhaned Raman scattering (SERS) spectra. The experimental results have been compared with those of W. S. Oh' s in detail and discussed analytically. It is shown that the molecules of Uracil lay flat on the silver surface, while, after adding a small volume of an aqueous solution of KCl to the silver sol solution, the molecules of uracil under go a reorientation from flat-lying state to the state of perpendicular to the surface Via O-4

关 键 词：尿嘧啶 吸附 银 喇曼效应 氯化钾 

分 类 号：O437.3[机械工程—光学工程]