トップ＞研究概要＞概略

縮合多環πラジカル

身近によく見られる磁石はサマリウム(Sm)、ネオジム(Nd)、鉄、コバルトなどの無機物が主体であり、それらの原子軌道を占める電子スピンを直接利用した物である。その磁性は各原子に基づいており、原子磁性と言うこともできる。それに対し、有機物は主に分子として存在するため、電子スピンを有機物に存在させた場合は、電子スピンは分子軌道を占めることになり、その磁性は分子磁性と言うことができる。有機物の特徴の一つに分子設計のしやすさとその多様性が挙げられ、様々な分子を設計することにより、多様な分子磁性体を詳細に調べることができる。当研究室では、安定な中性ラジカル、ならびに電子スピンを複数個有する高スピン分子の分子設計・合成を行い、分子間並びに分子内スピン間相互作用を調べている。

プロトン－電子連動系

分子間に形成された水素結合のプロトンの挙動は、周りの分子の電荷分布に著しく依存する。当研究室では、周りの電子状態と水素結合との関係を明確にして、電子-プロトン相互作用の持つ意義を明らかにし、外部刺激に対しプロトンと電子が柔軟に応答する分子の設計・合成を行っている。電子とプロトンの連動した分子間移動は、これからの材料開発に新しい一つの指針を与えるだけでなく、電子とプロトンの二つの電荷の自由度を持った素子機能の開発に大いに役立つと考えられる。

  • Pulsed electron spin nutation spectroscopy for weakly exchange-coupled multi-spin molecular systems with nuclear hyperfine couplings: A general approach to bi- and tri-radicals and determination of their spin dipolar and exchange interactions
    Ayabe, K.; Sato, K.; Nakazawa, S.; Nishida, S.; Sugisaki, K.; Ise, T.; Morita, Y.; Toyota, K.; Shiomi, D.; Kitagawa, M.; Suzuki, S.; Okada, K.; Takui, T.
    Mol. Phys. 2013,111,2767-2787
    (2013.6.24)


  • A Dicyanomethylene-Substituted Triangulene: Effects of Molecular-Symmetry Reduction and Electron-Accepting Substituents on a Fused Polycyclic Neutral π-Radical System
    Ueda, A.; Wasa, H.; Nishida, S.; Kanzaki, Y.; Sato, K.; Takui, T.; Morita, Y.
    Chem. Asian J. 2013 , 8, 2057-2063
    (2013.6.12)


  • 　Selected Papers !!!
    Syntheses, Redox Properties, Self-Assembled Structures and Charge-Transfer Complexes of
    Imidazole- and Benzimidazole-Annelated Tetrathiafulvalene Derivatives
    Murata, T.; Yamamoto, Y.; Yakiyama, Y.; Nakasuji, K.; Morita, Y.
    Bull. Chem. Soc. Jpn. 2013 , 86, 927-939 Open Access Article
    (2013.5.10)


  • 　Hot Paper !!!
    Hexamethoxyphenalenyl as a Possible Quantum Spin Simulator:
    An Electronically Stabilized Neutral π-Radical with Novel Quantum Coherence Owing to Extremely High Nuclear Spin Degeneracy
    Ueda, A.; Suzuki, S.; Yoshida, K.; Fukui, K.; Sato, K.; Takui, T.; Nakasuji, K.; Morita, Y.
    Angew. Chem. Int. Ed.2013, 52, 4795-4799 (DOI: 10.1002/anie.201301435)
    (2013.4.3)


  • “Angewandte Author Profiles”
    　Early View　click here!　　(2012.12.21)


  • An Extremely Redox-Active Air-Stable Neutral π Radical: Dicyanomethylene-Substituted Triangulene with a Threefold Symmetry
    Ueda, A.; Wasa, H.; Nishida, S.; Kanzaki, Y.; Sato, K.; Shiomi, D.; Takui, T.; Morita, Y.
    Chem. Eur. J. 2012, 18, 16272-16276
    (2012.11.24)



  • Nucleobase-Functionalized 1,6-Dithiapyrene-Type Electron-Donors: Supramolecular Assemblies by Complementary Hydrogen-Bonds and π‐Stacks
    Murata, T.; Miyazaki, E.; Nakasuji, K.; Morita, Y.
    Cryst. Growth Des. 2012, 12, 5815-5822
    (2012.11.5)



  • Crystal surface mediated structure transformation of a kinetic framework composed of multi-interactive ligand TPHAP and Co(Ⅱ)
    Yakiyama, Y.; Ueda, A.; Morita, Y.; Kawano, M.
    Chem. Commun. 2012, 48, 10651-10653
    (2012.9.22)



  • Tetrathiafulvalene-Fused Porphyrins via Quinoxaline Linkers: Symmetric and Asymmetric Donor-Acceptor Systems
    Jia, H.; Schmid, B.; Liu, S.; Jaggi, M.; Monbaron, P.; Bhosale, S. V.; Rivadehi, S.; Langford, S. J.; Sanguinet, L.; Levillain, E.; El-Khouly, M. E.; Morita, Y.; Fukuzumi, S.; Decurtins, S.
    Chem. Phys. Chem. 2012, 13, 3370-3382
    (2012.9.17)



  • Development of Organic Conductors with Self-Assembled Architectures of Biomolecules: Synthesis and Crystal Structures of Nucleobase-Functionalized Tetrathiafulvalene Derivatives
    Murata, T.; Miyazaki, E.; Maki, S.; Umemoto, Y.; Ohmoto, M.; Nakasuji, K.; Morita, Y.
    Bull. Chem. Soc. Jpn. 2012, 85, 995-1006
    (2012.9.8)



  • A Synthetic Two-Spin Quantum Bit: g-Engineered Exchange-Coupled Biradical Designed for Controlled-NOT Gate Operations
    Nakazawa, S.; Nishida, S.; Ise, T.; Yoshino, T.; Mori, N.; Rahimi, R.; Sato, K.; Morita, Y.; Toyota, K.; Shiomi, D.; Kitagawa, M.; Hara, H.; Carl, P.; Höfer, P.; Takui, T
    Angew. Chem., Int. Ed. 2012, 51, 9860-9864
    (2012.9.1)



  • Modulation of charge-transfer complexes assisted by complementary hydrogen bonds of nucleobases: TCNQ complexes of a uracil-substituted EDO-TTF
    Murata, T.; Umemoto, Y.; Miyazaki, E.; Nakasuji, K.; Morita, Y.
    CrystEngComm. 2012, 14, 6881-6887
    (2012.8.17)



  • Tetrathiafulvalene-Type Electron Donors Bearing Biimidazole Moieties: Multifunctional Units with Hydrogen Bonding Abilities
    Murata, T.; Nakasuji, K.; Morita, Y.
    Eur. J. Org. Chem. 2012, 4123-4129
    (2012.6.24)



  • "Chiral Stable Phenalenyl Radical: Synthesis, Electronic-spin Structure, and Optical Properties of [4]Helicene-Structured Diazaphenalenyl"
    Ueda, A.; Wasa, H.; Suzuki, S.; Okada, K.; Sato, K.; Takui, T.; Morita, Y.
    Angew. Chem., Int. Ed. 2012, ,51, 6691-6695
    (2012.5.26)



Nature Materials！！


  • Nature Materials
    Organic tailored batteries materials using stable open-shell molecules with degenerate frontier orbitals
    Morita, Y.; Nishida, S.; Murata, T.; Moriguchi, M.; Ueda, A.; Satoh, M.; Arifuku, K.; Sato, K.; Takui, T.
    Nature Materials 2011, 10, 947-951    (2011.10.17)
    press 発表の資料はこちら、 大阪大学理学部HPからはこちらでご覧になれます。

  • "Air-Stable Open-shell Organic Molecules: Syntheses of Electronic-Spin Delocalized Neutral Radicals and Dynamic Electronic-Spin Physical Properties"
    J.Synth.Org.Chem.Jpn. 2012, 70, 50–59
    (2011.9.14)

  • "Redox-Active Tubular Frameworks with TTF: Self-Assemblies by Complementary Hydrogen-Bonds and π-Stacks of TTF-Phenyluracil"
    （村田剛志・槙優・大元誠・宮碕栄吾・梅本欽一・中筋一弘・森田靖）
    CrystEngComm. 2011, 13, 6880–6884
    (2011.8.18)


  • Heteroatom Functionalization of Phenalenyl: Synthesis, Structures, and Properties of Hexa-substituted Phenalenyliums
    Ueda, A.; Yoshida, K.; Suzuki, S.; Fukui, K.; Nakasuji, K.; Morita, Y.
    J. Phys. Org. Chem. 2011, 24, 952–959
    (2011.7.25)


  • Solution-Stable Triple-Helicates of Quaterimidazole: Three-Dimensional Crystal Structures and Optical Resolution by Chiral-Column HPLC
    Yumi Yakiyama, Tsuyoshi Murata, Tomoaki Ise, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Kazuhiro Nakasuji and Yasushi Morita
    Eur. J. Inorg. Chem. 2011, 3438-3445
    (2011.5.14)


  • Proton-transfer salts between an EDT-TTF derivative having imidazole-ring and anilic acids:
    Multi-dimensional networks by acid-base hydrogen-bonds, π-stacks and chalcogen atom interactions
    村田剛志、焼山佑美、中筋一弘、森田 靖
    CrystEngComm. 2011, 13, 3689-3691
    (2011.4.22)


  • "Electronic Stabilization Effect of Spin-Delocalized Neutral Radical: Synthesis of An 8-Cyano-6-oxophenalenoxyl Derivative and Quantitative Evaluation of the Electronic-Spin Structure in terms of Resonance Structures"
    Nishida, Shinsuke; Kariyazono, Kazuki; Yamanaka Azusa; Fukui, Kozo; Sato, Kazunobu; Takui, Takeji; Nakasuji, Kazuhiro; Morita, Yasushi
    Chem. Asian J. 2011, 6, 1188-1196
    (2011.3.2)


  • "Synthetic organic spin chemistry for structurally well-defined open-shell graphene fragments"
    Morita, Yasushi; Suzuki, Shuichi; Sato, Kazunobu; Takui, Takeji
    Nature Chemistry 2011, 3, 197-204
    (2011.2.23)



  • "ESR and 1H-,19F-ENDOR/TRIPLE Study of Fluorinated Diphenylnitroxides as Synthetic Bus Spin-Qubit Radicals with Client Qubits in Solution"
    Yoshino, Tomohiro; Nishida, Shinsuke; Sato, Kazunobu; Nakazawa, Shigeaki; Rahimi, Robabeh; Toyota, Kazuo; Shiomi, Daisuke; Morita, Yasushi; Kitagawa, Masahiro; Takui, Takeji
    J.Phys.Chem.Lett. 2011, 2, 449-453
    (2011.2.12)



  • "Triple-Stranded Metallo-Helicates Addressable as Lloyd’s Electron Spin Qubits"
    Yasushi Morita, Yumi Yakiyama, Shigeaki Nakazawa, Tsuyoshi Murata, Tomoaki Ise, Daisuke Hashizume, Daisuke Shiomi, Kazunobu Sato, Masahiro Kitagawa, Kazuhiro Nakasuji and Takeji Takui
    J. Am. Chem. Soc. 2010, 132, 6944-6946


  • "Air-stable Curved π-Radical Based on Corannulene: Dynamic Electronic-spin Structure Induced by Temperature-dependent Conformational Changes"
    (上田　顕・小笠原華菜子・西田辰介・福井晃三・佐藤和信・工位武治・中筋一弘・森田　靖)
    Aust. J. Chem. 2010, 63, 1627-1633