高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (8): 1368.

• 研究论文 • 上一篇    下一篇

表面增强喇曼光谱检测卟啉单分子膜

朱梓华, 盛晓霞, 张智军, 朱涛, 刘忠范   

  1. 北京大学化学与分子工程学院, 纳米科学与技术研究中心, 北京 100871
  • 收稿日期:2000-01-12 出版日期:2001-08-24 发布日期:2001-08-24
  • 通讯作者: 朱涛(1964年出生),男,博士,副教授,从事纳米化学和喇曼光谱研究.E-mail:tzhu@chem.pku.edu.cn. E-mail:tzhu@chem.pku.edu.cn.
  • 基金资助:

    国家自然科学基金(批准号:29803002)

Surface Enhanced Raman Spectroscopic Detection of Porphyrin Monolayer

ZHU Zi-Hua, SHENG Xiao-Xia, ZHANG Zhi-Jun, ZHU Tao, LIU Zhong-Fan   

  1. Center for Nanoscale Science and Technology, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China
  • Received:2000-01-12 Online:2001-08-24 Published:2001-08-24

PDF (PC)

被引次数

22

摘要： 利用轴向配位作用将5,10,15,20-四苯基钴(Ⅱ)卟啉(CoTPP)固定在4-巯基吡啶自组装膜表面上,形成CoTPP单分子膜.通过组装金纳米粒子的方法,成功地获得了膜中CoTPP分子的喇曼光谱.研究结果表明,CoTPP分子是通过钴原子与氮原子之间的配位作用与巯基吡啶分子结合的,且其分子平面与基底表面近似平行.

关键词: 钴(Ⅱ)卟啉, 4-巯基吡啶, 自组装膜, 表面增强喇曼光谱

Abstract: Using4 mercaptopyridine(4-MPy) self-assembled on gold substrate as coupling agents, monolayer of cobalt(Ⅱ)-5,10,15,20-tetrakisphenyl-porphyrin (CoTPP) was fabricated on the pyridinyl-ter minated surface. Further deposition of Au nanoparticles enables the detection of CoTPPmolecules in monolayer to be possible by Surface Enhanced Raman Spectroscopy. The red-shift of "structure sensitive" peaks of porphyrin ring indicates the existence of chemicaLInteraction between CoTPPmolecules and the pyridine terminals, which was believed as the coordination between the nitrogen atom of pyridine ring and the cobalt atom in CoTPP. From the orientation of 4-mercaptopyridine SAMs, it can be deduced that the CoTPPmolecules are approximately parallel to Au substrate in the above structure.

Key words: Cobalt(Ⅱ) 5,10,15,20-tetrakisphenyl porphyrin, 4-Mercaptopyridine, Self assembled monolayer(SAM), Surface enhanced Raman spectroscopy(SERS)

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