2003 Fiscal Year Final Research Report Summary
Novel Metal-Coordinated Donors with Photoinduced Electron Transfer
| Project/Area Number |
14540492
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
SAKO Katsuya Nagoya Institute of Technology, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (90235234)
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| Project Period (FY) |
2002 – 2003
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| Keywords | Tetrathiafulvalene(TIF) / Dipyridophenazine / Photoinduced Electron Transfer / Metal-Coordinated Donors / Rnthenium Complex / Fluorescence Spectrum / Energy Transfer |
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| Research Abstract |
We designed new donor molecules that show new functions such as reproducible conductivity with electrical switching ability responded to the external stimuli. 4, 5-Dipyridophenazine derivatives that exhibit high coordination ability with various metal ions and electron withdrawing ability with phenazine unit are one of the best candidates for the study of the relationship between electrical conductivity and orientation of the donor molecules in the crystals. We synthesized a new metal-coordinated donor (1), which can show d-π interaction and energy transfer, incorporating 4, 5-dipyridophenazine group as a metal binding site as well as photoinduced electron transfer.
The UV/VIS spectrum of 1 revealed that π-conjugated system was extended between 4, 5-dipyridophenazine ring and benzoTTF unit through acetylene linkage. The new metal-coordinated donor (1) appears a dramatically enhanced fluorescence as blue emission compared with that of the mother 4, 5-dipyridophenazine. Furthermore, ruthenium (II) complex [Ru(II) (bpy)_21] also shows very strong fluorescence as red emission. The redox properties of the new metal-coordinated donor(1) and ruthenium (II) complex [Ru(II)(bpy)_21] were determined by CV. Donor 1 gave two reversible redox orocesses as TTF unit and ruthenium (II) complex [Ru(II)(bpy)_21] was overlapped with the first and second redox peaks of TTF and Ru(II)【double arrow】Ru(III) redox peak.. We are now currently invesitigating routes to synthesize other Ru (II) and Re (I) complexes to clarify the difference of fluorescence and redox properties between metal-free donors and complexes as [Ru(II)(bpy)_21].
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[Publications] M.Yasutake, T.Koga, Y.Sakamoto, S.Komatsu, M.Zhou, K.Sako, H.Tatemitsu, S.Onaka, Y.Aso, S.Inoue, T.Shinmyozu: "An Alternative Synthetic Route of [3_5](1,2,3,4,5)Cyclophane, and Structural Properties of Multibridged [3_n]Cyclophanes and Their Charge-Transfer Complexes in the Solid State"Journal of the American Chemical Society. 124. 10136-10145 (2002)
Description
「研究成果報告書概要(和文)」より
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[Publications] M.Yasutake, T.Koga, Y.Sakamoto, S.Komatsu, M.Zhou, K.Sako, H.Tatemitsu, S.Onaka, Y.Aso, S.Inoue, T.Shinmyouzu: "An Alternative Synthetic Route of [3_5](1,2,3,4,5)Cyclophane, and Structural Properties of Multibridged [3_n]Cyclophanes and Their Charge-Transfer Complexes in the solid State"Journal of the American Chemical Society. 124. 10136-10145 (2003)
Description
「研究成果報告書概要(欧文)」より
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