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Synthesis, structure and photophysical properties of a flavin-based platinum(II) complex

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Title: Synthesis, structure and photophysical properties of a flavin-based platinum(II) complex
Authors: Kobayashi, Atsushi Browse this author →KAKEN DB
Ohbayashi, Korin Browse this author
Aoki, Rie Browse this author
Chang, Ho-Chol Browse this author →KAKEN DB
Kato, Masako Browse this author →KAKEN DB
Issue Date: 14-Apr-2011
Publisher: Royal Society of Chemistry
Journal Title: Dalton Transactions
Volume: 40
Issue: 14
Start Page: 3484
End Page: 3489
Publisher DOI: 10.1039/c0dt01139h
PMID: 21359278
Abstract: We synthesized a thiosemicarbazone-functionalized flavin (Fl-(H)TSC: 2-[2-(3,4-dihydro-7,8-dimethyl-2,4-dioxobenzo[g]pteridin-10(2H)-yl)ethylidene]-hydrazinecarbothioamide) and its Pt(II) complex [Pt(Fl-TSC)2], and characterized it using X-ray diffraction, UV-visible absorption and luminescence spectroscopy. X-ray structural analysis for [Pt(Fl-TSC)2] revealed that the structure of the isoalloxazine part was almost the same as that in lumiflavin (7,8,10-trimethylisoalloxazine), and the thiosemicarbazone moiety acted as a bidentate ligand to form a PtS2N2 planar conformation. UV-visible absorption and luminescence spectra of these compounds were very similar to those of riboflavin, but the emission intensity and the lifetime decreased considerably. Theoretical calculations suggested that the charge-separated state (Fl^[・-]-TSC^[・+]) contributed to the faster quenching from the 1π-π* emission state.
Rights: Dalton Trans., 2011, 40, 3484-3489 - Reproduced by permission of The Royal Society of Chemistry (RSC)
Type: article (author version)
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: 小林 厚志

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