Structure and redox properties of electropolymerized film obtained from iron meso‐tetrakis(3‐thienyl)porphyrin

Makoto Yuasa; Kenichi Oyaizu; Aritomo Yamaguchi; Masuhide Ishikawa; Katsuya Eguchi; Tomohiro Kobayashi; Yuujiro Toyoda; Satoshi Tsutsui

doi:10.1002/pat.633

journal article Jun 24, 2005

Structure and redox properties of electropolymerized film obtained from iron meso‐tetrakis(3‐thienyl)porphyrin

Makoto Yuasa Kenichi Oyaizu

Aritomo Yamaguchi

Masuhide Ishikawa Katsuya Eguchi Tomohiro Kobayashi

Yuujiro Toyoda Satoshi Tsutsui

Polymers for Advanced Technologies Vol. 16 No. 8 pp. 616-621 · Wiley

View at Publisher Save 10.1002/pat.633

Abstract

AbstractOxidative polymerization of bromoiron(III) meso‐tetrakis(3‐thienyl)porphyrin gave a novel polymeric porphyrin complex randomly crosslinked at the 2,5‐positions of the peripheral thienyl groups. The electrical semiconductivity of ca. 10−5 S/cm after I2 doping indicated that the polymer had a π‐conjugated structure with a moderate delocalization of π electrons over the thienylporphyrin units. PM3 calculations for free‐base models revealed that HOCO (the highest occupied crystal orbital) band width was reduced by introduction of the porphyrin moieties into the thienylene backbone and yet low HOCO‐LUCO (the lowest unoccupied crystal orbital) gap was maintained, which accounted for the relatively low electrical conductivity of the porphyrin polymer. The modified electrode prepared by electropolymerization was redox‐active due to the presence of iron(II/III) couple and the semiconductivity of the film, which served as a novel non‐enzymatic electrochemical sensor for superoxide anion radical based on the facile electrocatalytic oxidation of the superoxide. Copyright © 2005 John Wiley & Sons, Ltd.

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Metrics

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Details

Published: Jun 24, 2005
Vol/Issue: 16(8)
Pages: 616-621
License: View

Authors

Institute of Colloid and Interface Science, Tokyo University of Science, Tokyo 162-8601, Japan, Department of Pure & Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan, and Corporate Research Center, Mitsubishi Paper Mills Limited, Tokyo 125-8525, Japan

Research and Utilization Division, SPring-8/JASRI, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan

Cite This Article

Makoto Yuasa, Kenichi Oyaizu, Aritomo Yamaguchi, et al. (2005). Structure and redox properties of electropolymerized film obtained from iron meso‐tetrakis(3‐thienyl)porphyrin. Polymers for Advanced Technologies, 16(8), 616-621. https://doi.org/10.1002/pat.633

Structure and redox properties of electropolymerized film obtained from iron meso‐tetrakis(3‐thienyl)porphyrin

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