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系列巯基苯基卟啉自组装膜的光谱和电化学性质

杨建东1,王都留1,卢小泉2*   

  1. (1.陇南师范高等专科学校生物化学系 成县 742500；
    2.甘肃省生物电化学与环境分析重点实验室， 西北师范大学 兰州 730070)
  • 收稿日期:2012-05-28 修回日期:2012-07-12 出版日期:2013-04-10 发布日期:2013-04-10
  • 通讯作者: 卢小泉，教授; Tel/Fax:0931-7975276; E-mail:Luxq@nwnu.edu.cn; 研究方向：功能化卟啉纳米材料与卟啉电化学
  • 基金资助:
    国家自然科学基金（21175108,21165016）甘肃省自然科学基金项目（1107RJZK243）陇南师专校重点科研项目（2012LSZK01003）资助

Spectroscopic and Electrochemical Properties of a Series of Thiol-derivated Porphyrins Self-Assembled Monolayers

YANG Jiandong1, WANG Duliu1, LU Xiaoquan2*   

  1. (1.Department of Biology & Chemistry,Longnan Normal College,Chengxian 742500,China;
    2.Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province,Northwest Normal of University,Lanzhou 730070,China)
  • Received:2012-05-28 Revised:2012-07-12 Published:2013-04-10 Online:2013-04-10

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摘要： 考察了系列巯基苯基卟啉自组装膜的光谱及电化学特征。 结果表明，与溶液中巯基苯基卟啉的光谱相比，自组装膜中卟啉分子的吸收和荧光光谱均发生了明显变化，随着卟啉分子中巯基数目的增加，其荧光峰依次发生红移；不同巯基苯基卟啉自组装膜修饰电极对电解液中电对的电子转移阻碍能力不同，由5,10-二[4-(3-巯基丙氧基)-苯基]-15,20二苯基卟啉形成的卟啉自组装膜的阻碍作用最强，膜表面覆盖度最致密。

关键词: 多巯基苯基卟啉衍生物, 自组装单分子膜, 吸收和荧光光谱, 电化学

Abstract: The spectroscopic and electrochemical properties of a series of thiol-porphyrin self-assembled monolayers(SAMs) were studied. The results show that the absorption and fluorescent spectra of the SAMs changed dramatically in comparison with their corresponding precursors in the solution. With the number of thiol in porphyrin increases, the fluorescent peak of the SAMs tends to red shift. Among them, the impede ability to electron transfer in electrolyte are different. The highest block ability and coverage are observed for 5,10-bis(4-hydroxyphenyl)-15,20-bisphenyl porphyrin(cis-TPP(SH)2) SAMs.

Key words: multi-thiol substituted porphyrin derivatives, self-assembled monolayer, absorption and fluorescent spectra, electrochemistry

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