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A Redox-Active Dinuclear Platinum Complex Exhibiting Multicolored Electrochromism and Luminescence

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Title: A Redox-Active Dinuclear Platinum Complex Exhibiting Multicolored Electrochromism and Luminescence
Authors: Yoshida, Masaki Browse this author
Yashiro, Naoki Browse this author
Shitama, Hotaka Browse this author
Kobayashi, Atsushi Browse this author
Kato, Masako Browse this author
Keywords: dinuclear complexes
electrochromism
luminescence
mixed-valence states
platinum
Issue Date: 12-Jan-2016
Publisher: Wiley-Blackwell
Journal Title: Chemistry-A European journal
Volume: 22
Issue: 2
Start Page: 491
End Page: 495
Publisher DOI: 10.1002/chem.201504478
PMID: 26573238
Abstract: A redox series of cyclometalated platinum complexes based on a dinuclear motif linked by acetamidato (aam) bridging ligands, [Pt-2(mu-aam)(2)(ppy)(2)] (ppy(-) = 2-phenylpyridinate ion), has been synthesized. The complexes in this series are easily oxidized and reduced by both electrochemical and chemical methods, and this is accompanied by multistep changes in their optical properties, that is, multiple color changes and luminescence. Isolation of the complexes and the structural determination of three oxidation states, +2, +2.33, and +3, have been achieved. The mixed-valent complex, with an average oxidation state of +2.33, forms a trimer based on the dinuclear motif. The mixed-valent complex has a characteristic color owing to intervalence transitions in the platinum chain. In contrast, the divalent complex exhibits strong red phosphorescence originating from a triplet metal-metal-toligand charge transfer ((MMLCT)-M-3) state. This study demonstrates the unique chromic behavior of a redox-active and luminescent platinum complex.
Rights: This is the peer reviewed version of the following article: A Redox-Active Dinuclear Platinum Complex Exhibiting Multicolored Electrochromism and Luminescence, which has been published in final form at [10.1002/chem.201504478]. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for self-archiving
Type: article (author version)
URI: http://hdl.handle.net/2115/63934
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 加藤 昌子

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