| 利用和频振动光谱研究空气/短链脂肪酸界面的分子取向 |
| |
| 引用本文： | 黄芝,郭源. 利用和频振动光谱研究空气/短链脂肪酸界面的分子取向[J]. 高等学校化学学报, 2012, 33(6): 1271-1277. DOI: 10.3969/j.issn.0251-0790.2012.06.025 |
| |
| 作者姓名： | 黄芝 郭源 |
| |
| 作者单位： | 1.中国科学院化学研究所,北京分子科学国家实验室,分子反应动力学国家重点实验室,北京100190;中国科学院研究生院,北京100049;2.中国科学院化学研究所,北京分子科学国家实验室,分子反应动力学国家重点实验室,北京100190 |
| |
| 基金项目： | 国家自然科学基金,中国科学院知识创新工程重要方向项目计划 |
| |
| 摘 要： | 利用和频振动光谱(SFG-VS)方法检测了5种短链脂肪酸分子(乙酸、丙酸、正丁酸、正戊酸及正己酸)在空气/纯液体界面的结构,得到了3种偏振组合(ssp,PPP,sps)下的和频振动光谱.通过偏振选择定则对各个谱峰进行了指认和分析,同时计算出空气/纯脂肪酸液体界面上脂肪酸分子的甲基取向角.对比发现,从丙酸到己酸,分子甲基基团的界面取向角随碳链的增长略有增大.并对其机理进行了分析.
|
| 关 键 词： | 短链脂肪酸 分子取向角 气/液界面 和频振动光谱 |
| 收稿时间： | 2011-11-14 |
Sum Frequency Generation Vibrational Spectroscopy Study of Serial Short Chain Fatty Acids Liquid/Air Interfaces |
| |
| HUANG Zhi , GUO Yuan. Sum Frequency Generation Vibrational Spectroscopy Study of Serial Short Chain Fatty Acids Liquid/Air Interfaces[J]. Chemical Research In Chinese Universities, 2012, 33(6): 1271-1277. DOI: 10.3969/j.issn.0251-0790.2012.06.025 |
| |
| Authors: | HUANG Zhi GUO Yuan |
| |
| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The air/pure liquid interfaces of five kinds of short chain fatty acids of acetic acid,propionic acid,butyric acid,pentanoic acid and hexanoic acid were addressed by sum frequency generation vibrational spectroscopy(SFG-VS) under three polarization combinations(ssp,ppp,sps).The vibrational modes of spectra peaks were assigned according to the polarization selection rules.Furthermore,the orientation of the fatty acid molecules at air/liquid interface was calculated.It was found that the orientation angles increase slightly with the increase of the length of carbon chain and the possible mechanism was proposed. |
| |
| Keywords: | Short chain fatty acid Molecular orientational angle Air/liquid interface Sum frequency gene-ration vibrational spectroscopy(SFG-VS) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
|
点击此处可从《高等学校化学学报》下载全文 |
|
