物理化学学报 >> 2003, Vol. 19 >> Issue (12): 1123-1126.doi: 10.3866/PKU.WHXB20031206

研究论文 上一篇    下一篇

气液界面磷脂单分子膜的表面增强拉曼光谱

戴树玺;张兴堂;李蕴才;杜祖亮;党鸿辛   

  1. 中国科学院兰州化学物理研究所,固体润滑国家重点实验室, 兰州　730000；河南大学特种功能材料重点实验室, 开封　475001
  • 收稿日期:2003-05-26 修回日期:2003-07-29 发布日期:2003-12-15
  • 通讯作者: 杜祖亮 E-mail:zld@henu.edu.cn

Surface Enhanced Raman Spectra of Lipid Langmuir Monolayers at the Air-Water Interface

Dai Shu-Xi;Zhang Xing-Tang;Li Yun-Cai;Du Zu-Liang;Dang Hong-Xin   

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou　730000; 2Key Laboratory of Special Functional Materials, Henan University, Kaifeng　475001
  • Received:2003-05-26 Revised:2003-07-29 Published:2003-12-15
  • Contact: Du Zu-Liang E-mail:zld@henu.edu.cn

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摘要： 采用纳米银胶作为成膜亚相, 原位获得了十八胺单分子膜、十八胺/卵磷脂复合膜的表面增强拉曼信号.研究表明,增强主要来源于亚相中的银粒子与成膜分子之间较强的作用.通过在磷脂膜内添加十八胺分子辅助增强而获取了卵磷脂的分子振动信息.

关键词: 表面增强拉曼光谱, 单分子膜, 分子组装, LB技术, 银胶

Abstract: Surface enhanced Raman spectroscopy(SERS) has been used to study the octadecylamine(ODA) Langmuir monolayers and egg phosphatidylcholine(PC)/ODA mixed monolayers on colloidal silver subphase. The SERS enhancement results from the strong interaction between headgroups of the ODA molecules and silver nanoparticles in subphase. The results of Raman test for PC/ODA mixed monolayers show that the vibrational information of phospholipid molecules can be acquired in situ with surfactant-aided SERS effect. Work based on such systems could expand the application of SERS technique in the study of Langmuir monolayers at the air-water interface.

Key words: Surface enhanced Raman scattering(SERS), Langmuir Monolayer, 　Molecular assembly, Langmuir-Blodgett technique, Silver colloids