Direct Metal Substitution of Electropolymerized Ferriprotoporphyrin: A Simple Electrode-Modification Process for Developing Electrocatalytic Materials

A simple approach for expanding metalloporphyrins as electrocatalytic materials is introduced. This new method involves the direct electropolymerization of an electrically conducting layer of ferriprotoporphyrin followed by a metal-substitution reaction executed by soaking the electrode in an aqueou...

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Bibliographic Details
Published in:ECS electrochemistry letters 2013-07, Vol.2 (10), p.H37-H39
Main Authors: Bennett, Jason A., Sterling, Karissa L., Pander, James E.
Format: Article
Language:English
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Summary:A simple approach for expanding metalloporphyrins as electrocatalytic materials is introduced. This new method involves the direct electropolymerization of an electrically conducting layer of ferriprotoporphyrin followed by a metal-substitution reaction executed by soaking the electrode in an aqueous metal-salt solution. This process exchanges the iron center of the surface-bound protoporphyrin with the metal ion of the salt solution. X-ray photoelectron spectroscopy and electrochemical methods confirm that this new metal is incorporated into the surface-bound porphyrin structure and alters the electrochemical properties of the electrode. This simple electrode modification process may expand the use of metalloporphyrins for electrocatalytic applications.
ISSN:2162-8726
2162-8734
DOI:10.1149/2.005310eel