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| 在酸、碱条件下甘氨酸酐在正电性纳米银上的SERS研究 | |
| 引用本文： | 司民真,自兴发,武荣国,张鹏翔.在酸、碱条件下甘氨酸酐在正电性纳米银上的SERS研究[J].光谱学与光谱分析,2006,26(8):1472-1475. |
| 作者姓名： | 司民真 自兴发 武荣国 张鹏翔 |
| 作者单位： | 1. 楚雄师范学院物理与电子科学系，云南 楚雄 675000 2. 楚雄市环境监测站，云南 楚雄 675000 3. 昆明理工大学, 光电子新材料研究所，云南 昆明 651000 |
| 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。 |
| 关 键 词： | 甘氨酸酐 正电性纳米银 Raman光谱 SERS 吸附 密度泛函理论 |
| 文章编号： | 1000-0593（2006）08-1472-04 |
| 收稿时间： | 2005-04-28 |
| 修稿时间： | 2005-08-08 |
The SERS of Glycine Anhydride on Positive Silver Colloids |
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| SI Min-zhen,ZI Xing-fa,WU Rong-guo,ZHANG Peng-xiang.The SERS of Glycine Anhydride on Positive Silver Colloids[J].Spectroscopy and Spectral Analysis,2006,26(8):1472-1475. | |
| Authors: | SI Min-zhen ZI Xing-fa WU Rong-guo ZHANG Peng-xiang |
| Institution: | 1. Department of Physics and Electronic Science, Chuxiong Teacher’s College, Chuxiong 675000, China2. Chuxiong Environmental Monitoring Station, Chuxiong 675000, China3. IAMPE，Kunming University of Science and Technology, Kunming 651000, China |
| Abstract: | 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 B3LYP 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. |
| Keywords: | Glycine anhydride Positive silver colloid Raman spectrum SERS Adsorption B3LYP/6-31g(d) |
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