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Synthesis, structure and photophysical properties of a flavin-based platinum(II) complex
| 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) |
| URI: | http://hdl.handle.net/2115/48141 |
| 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)
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Submitter: 小林 厚志
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