title: Electrochemical response of metal complexes in homogeneous solution under photoirradiation.
abstract: The electrochemical detection of metal complexes in the photoexcited state is important for understanding photoinduced electron transfer (PET) processes, which play a central role in photo-energy conversion systems. In general, however, the redox potentials of excited states have been indirectly estimated by a combination of spectroscopic properties and ground-state redox potentials. To establish a simple method for directly determining the redox potentials of the photoexcited states of metal complexes, electrochemical measurements under several conditions were performed. The electrochemical response was largely influenced not only by the generation of photoexcited molecules but also by the convection induced by photoirradiation, even when the global temperature of the sample solution was unchanged. The suppression of these unfavourable electrochemical responses was successfully achieved by adopting well-established electrochemical techniques. Furthermore, as an initial demonstration, the photoexcited state of a Ru-based metal complex was directly detected, and its redox potential was determined using a thin layer electrochemical method.
authors.affiliation: 1] Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1, Higashiyama, Myodaiji, Okazaki, Aichi 444-8787 Japan [2] The Graduate University for Advanced Studies [SOKENDAI], Shonan Village, Hayama, Kanagawa 240-0193 Japan.
authors.forename: Arisa
authors.initials: A
authors.lastname: Fukatsu
authors.affiliation: 1] Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1, Higashiyama, Myodaiji, Okazaki, Aichi 444-8787 Japan [2] The Graduate University for Advanced Studies [SOKENDAI], Shonan Village, Hayama, Kanagawa 240-0193 Japan [3] Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, 38, Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 Japan [4] ACT-C, Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawaguchi, Saitama 332-0012 Japan.
authors.forename: Mio
authors.initials: M
authors.lastname: Kondo
authors.affiliation: 1] Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1, Higashiyama, Myodaiji, Okazaki, Aichi 444-8787 Japan [2] The Graduate University for Advanced Studies [SOKENDAI], Shonan Village, Hayama, Kanagawa 240-0193 Japan.
authors.forename: Masaya
authors.initials: M
authors.lastname: Okamura
authors.affiliation: Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1, Higashiyama, Myodaiji, Okazaki, Aichi 444-8787 Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Yoshida
authors.affiliation: 1] Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1, Higashiyama, Myodaiji, Okazaki, Aichi 444-8787 Japan [2] The Graduate University for Advanced Studies [SOKENDAI], Shonan Village, Hayama, Kanagawa 240-0193 Japan [3] Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, 38, Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585 Japan.
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Masaoka