摘要
测定了甘氨酸酐的Raman谱以及甘氨酸酐在酸、碱环境条件下在正电性纳米银上的表面增强拉曼散射光谱(SERS),用B3LYP/6-31g(d)计算了甘氨酸酐的Raman光谱,借助理论计算的结果对实验得出的Raman光谱及酸性环境条件下的SERS进行了指认,得知在此条件下分子物理吸附在纳米银上;碱性环境条件下的甘氨酸酐的SERS与酸性环境条件下的甘氨酸酐的SERS谱及甘氨酸酐的Raman谱相比有了较大的变化,经过分析,可以认为甘氨酸酐可能在银表面发生水解反应成了为甘氨酸二肽。
The Raman spectrum and SERS of glycine anhydride in acidic and basic media on positive silver colloids were recorded. Calculations of the vibration frequencies were performed for glycine anhydride by B3L YP at 6-31g（d） level. The assignment of Raman spectrum and SERS of glycine anhydride in acidic media were obtained with the help of calculation. It was found that the glycine anhydride is physically adsorbed on the surface of silver. The SERS of glycine anhydride is very different in acidic media from that in basic media. This seems to mean that the geometry of glycine anhydride on positive silver colloid in basic media has changed.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第8期1472-1475,共4页
Spectroscopy and Spectral Analysis
基金
国家留学基金资助项目
