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In Situ Photopolymerization of Pyrrole in Mesoporous TiO2
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Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
These authors contributed equally to this work.
Section:Abstract
We examined mesoporous TiO2 as a photosensitizer and template for creating hybrid TiO2-polypyrrole materials. Optical excitation of mesoporous TiO2 was used to generate the electronic potential necessary for the oxidation and polymerization of the pyrrole monomer. The photopolymerization process was monitored by the quartz crystal microbalance, nitrogen sorption, and thermogravimetric techniques. In situ generation of polypyrrole was observed to be self-limiting after approximately 20−30% filling of the mesoporous TiO2 network. In situ generation of a complementary phase by means of charge transfer from an active host phase represents an alternative means of assembling hybrid inorganic−organic materials with potential applications ranging from electrocatalysis to photovoltaics.
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This article has been cited by 4 ACS Journal articles (4 most recent appear below).
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History
- Published In Issue April 20, 2010
- Article ASAPMarch 23, 2010
- Received: March 04, 2010
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