Chinese Journal of Applied Chemistry

• Communications • Previous Articles    

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

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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