title: Oxygen Reduction to Water by a Cofacial Dimer of Iron(III)-Porphyrin and Iron(III)-Phthalocyanine Linked through a Highly Flexible Fourfold Rotaxane.
abstract: A μ-oxo-dinuclear iron complex of a supramolecular porphyrin-phthalocyanine conjugate was synthesized and its catalytic electrochemical oxygen reduction properties were investigated. In the conjugate, porphyrin and phthalocyanine units were connected to form a cofacial dimeric structure through a flexible fourfold rotaxane linkage, which was advantageous for accommodating small substrates between the iron centers. The conjugate showed efficient catalytic properties, at more positive potentials than those of other reported dinuclear porphyrinoid iron complexes, to selectively afford water through a four-electron reduction process.
authors.affiliation: Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
authors.forename: Nozomi
authors.initials: N
authors.lastname: Mihara
authors.affiliation: Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.|Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Yamada
authors.affiliation: IRCELS, Institute for Chemical Research, Kyoto University, Gokasho Uji-city, Kyoto, 611-0011, Japan.
authors.forename: Hikaru
authors.initials: H
authors.lastname: Takaya
authors.affiliation: Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka, 560-8531, Japan.
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Kitagawa
authors.affiliation: Institute for Materials Chemistry and Engineering, and Department of Material and Molecular Sciences, Kyushu University, Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan.
authors.forename: Shin
authors.initials: S
authors.lastname: Aoyama
authors.affiliation: Institute for Materials Chemistry and Engineering, and Department of Material and Molecular Sciences, Kyushu University, Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan.
authors.forename: Kazunobu
authors.initials: K
authors.lastname: Igawa
authors.affiliation: Institute for Materials Chemistry and Engineering, and Department of Material and Molecular Sciences, Kyushu University, Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Tomooka
authors.affiliation: Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602, Japan.
authors.forename: Kentaro
authors.identifier: http://orcid.org/0000-0002-6395-4536
authors.initials: K
authors.lastname: Tanaka
keywords: iron; phthalocyanines; porphyrinoids; reduction; rotaxanes