2003 Fiscal Year Final Research Report Summary
Synthetic Studies on Tower Shaped Magnets
| Project/Area Number |
14340222
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
機能・物性・材料
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
SUGIURA Ken-ichi Tokyo Metropolitan University, Graduate School of science, Associate Prof., 理学研究科, 助教授 (60252714)
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| Co-Investigator(Kenkyū-buntansha) |
MIYASAKA Hitoshi Tokyo Metropolitan University, Graduate School of science, Associate Prof., 理学研究科, 助手 (50332937)
YAMASHITA Masahiro Tokyo Metropolitan University, Graduate School of science, Prof., 理学研究科, 教授 (60167707)
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| Project Period (FY) |
2002 – 2003
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| Keywords | porphyrin / molecular magnet / supramolecular |
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| Research Abstract |
Electron transfer complexes based on porphyrinatomanganes(II) and cyano-acceptor molecules show bulk ferromagnetism. The characteristics of these complexes are : (1)high critical temperature, (2)well designed crystal structures, and (3)high cohesive forces. However, the detailed mechanism of this magnet, especially, the relationship between the magnetism and the three-dimensional structure, is still unclear, With an aim obtaining the relationship and future understandings, we designed the tower shaped supramolecular alley. To obtain such materials, structurally well defined porphyrin oligomers are required. The oligomers were prepared by the coupking reaction of Suzuki porphyrin, boronic acid substituted porphyrin, and halogenated porphyrins. The well estimated reaction condition afforded the oligomers in 80 to 95 % yield. The resultant oligomers were metallated with Mn(OAc)_2 to give the corresponding Mn(III) complexes. The Mn(II) complexes were obtained by the reduction reaction using NaBH_4. We are currently estimating the magnetic properties of the complexes.
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[Publications] Kato, Aiko, Sugiura, Ken-ichi, Miyasaka, Hitoshi, Tanaka, Hiroyuki, Kawai, Tomoji, Sugimoto, Manabu, Yamashita, Masahiro: "A Square Cyclic Porphyrin Dodecamer : Synthesis and Single-Molecule Characterization"Chemistry Letters. 33. 578-579 (2004)
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「研究成果報告書概要(欧文)」より
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[Publications] Yamane, Osamu, Sugiura, Ken-ichi, Miyasaka, Hitoshi, Nakamura, Kazuya, Fujimoto, Tatsuhiko, Nakamura, Kazuki, Kaneda, Takahiro, Sakata, Yoshiteru, Yamashita, Masahiro: "Pyrene-fused porphyrins : Annulation reactions of meso-pyrenylporphyrins"Chemistry Letters. 33. 40-41 (2004)
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「研究成果報告書概要(欧文)」より
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[Publications] Nakamura, Kazuya, Fujimoto, Tatsuhiko, Takara, Satoshi, Sugiura, Ken-ichi, Miyasaka, Hitoshi, Ishii, Tomohiko, Yamashita, Masahiro, Sakata, Yoshiteru: "Systematic synthesis of porphyrin dimers linked by conjugated oligoacetylene bridges"Chemistry Letters. 32. 694-695 (2003)
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「研究成果報告書概要(欧文)」より
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[Publications] Nakamura, T., Matsumoto, T., Tada, H., Sugiura, Ken-ichi, (Editors): "Chemistry of Nanomolecular Systems : Towards the Realization of Molecular Devices. [In : Springer Ser.Chem.Phys., 2003;70]"Springer-Verlag, Berlin, Germany. 197 (2003)
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