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Chemist JOTARO

Orthogonal Porphyrin Arrays

At present, spin-alignment of -radicals of directly-linked porphyrin arrays is a major subject.

Journal Articles

Modulative Magnetic Interaction in -Diradicals of Directly meso-Linked Porphyrin Dimers
  Jotaro NAKAZAKI, Yutaka SENSHU, and Hiroshi SEGAWA
Polyhedron 2005, 24, 2538-2543.
 
Spin Alignment of Orthogonal -Radicals of Directly meso-meso Linked Porphyrin Dimer, Trimer, and Tetramer
  Jotaro NAKAZAKI, Yutaka SENSHU, Daiki MACHIDA, and Hiroshi SEGAWA
Transactions of the Materials Research Society of Japan 2005, 30, 739-742.
 
Triplet -Diradical Dication of Directly meso--Linked Porphyrin Dimer
  Hiroshi SEGAWA, Yutaka SENSHU, Jotaro NAKAZAKI, and Kimihiro SUSUMU
Journal of the American Chemical Society 2004, 126, 1354-1355. (Link)
 
Spin Alignment of Orthogonal -Radicals of Directly meso-Linked Porphyrin Arrays
  Hiroshi SEGAWA, Daiki MACHIDA, Yutaka SENSHU, Jotaro NAKAZAKI, Kazutaka HIRAKAWA, and Feipeng WU
Chemical Communications 2002, 3032-3033. (Link)
 

Oral Presentations

  • Fluorescence Quenching of Directly meso-Linked Porphyrin Heterodimers
    Jotaro NAKAZAKI, Hajime EGUCHI, Hiroshi SEGAWA
    86th Annual Meeting of Chemical Society of Japan (Funabashi/Chiba, Mar.27-30, 2006) 3K2-01
     
  • Directly meso-Linked Porphyrin Heterodimers for Photo-Responsible -Radical Systems
    Jotaro NAKAZAKI, Hiroshi SEGAWA
    PACIFICHEM2005 (Honolulu/Hawaii, Dec.15-20, 2005)
     
  • Assembled -Radicals of Directly meso-Linked Porphyrin Arrays on Surface
    Jotaro NAKAZAKI, Hiroshi SEGAWA
    54th SPSJ Symposium on Macromolecules (Yamagata, Sep.20-22, 2005) 1N08
     
  • Charge Transfer Excited State of Directly meso-Linked Zinc Porphyrin Heterodimer
    Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2005 (Fukuoka, Sep.12-14, 2005) 1C21
     
  • Assembled -Radicals of Directly meso-Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Hiroshi SEGAWA
    85th Annual Meeting of Chemical Society of Japan (Yokohama, Mar.26-29, 2005) 3F4-32
     
  • Spin Alignment of Orthogonal -Radicals of Directly Linked Porphyrin Arrays
    Jotaro NAKAZAKI, Yutaka SENSHU, Daiki MACHIDA, Hiroshi SEGAWA
    15th MRS-J (Materials Research Society of Japan) Academic Symposium (Kanda/Tokyo, Dec.23-24, 2004) J1-P32
     
  • Property Modulation by Substituents in -Diradicals of Directly meso-Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Yutaka SENSHU, Hiroshi SEGAWA
    Symposium of Photochemistry 2004 (Tsukuba, Nov.1-3, 2004) 3P070
     
  • Modulative Magnetic Interaction in -Diradicals of Directly meso-Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Yutaka SENSHU, Hiroshi SEGAWA
    ICMM2004 (9th International Conference of Molecule-based Magnets) (Tsukuba, Oct.4-8, 2004) PA071
     
  • Substituent Effect on Spin State of -Biradicals of Directly meso-Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Yutaka SENSHU, Hiroshi SEGAWA
    Symposium of Molecular Structure 2004 (Hiroshima, Sep.27-30, 2004) 3A03
     
  • Magnetic Interaction in -Biradicals of Directly meso-Linked Antimony(V) Porphyrin Dimers
    Takamitsu AISAKA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Molecular Structure 2004 (Hiroshima, Sep.27-30, 2004) 3P001
     
  • Substituent Effect on -Biradicals of Directly meso-Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Yutaka SENSHU, Hiroshi SEGAWA
    84th Annual Meeting of Chemical Society of Japan (Hyogo/Nishinomiya, Mar.26-29, 2004)
     
  • Preparation of -Radical Crystal by Electrochemical Reduction of Metalloid Porphyrins
    Takamitsu AISAKA, Jotaro NAKAZAKI, Yasuhito MAEDA, Hiroshi SEGAWA
    84th Annual Meeting of Chemical Society of Japan (Hyogo/Nishinomiya, Mar.26-29, 2004)
     
  • Directly meso- Linked Porphyrin Dimer Affording Spin-Aligned -Radicals
    Jotaro NAKAZAKI, Yutaka SENSHU, Kimihiro SUSUMU, Hiroshi SEGAWA
    Symposium of Photochemistry 2003 (Matsue, Nov.22-24, 2003)
     
  • Magnetic Interactions in -Radicals of Directly meso-meso or meso- Linked Porphyrin Dimers
    Jotaro NAKAZAKI, Yutaka SENSHU, Daiki MACHIDA, Kimihiro SUSUMU, Hiroshi SEGAWA
    83rd Annual Meeting of Chemical Society of Japan (Tokyo/Waseda, Mar.18-21, 2003)
     
  • Spin Alignment in -Biradical of Directly meso- Linked Porphyrin Dimer
    Yutaka SENSHU, Jotaro NAKAZAKI, Kimihiro SUSUMU, Hiroshi SEGAWA
    83rd Annual Meeting of Chemical Society of Japan (Tokyo/Waseda, Mar.18-21, 2003)
     
  • Spin-Alignment in -Radicals of Directly meso-Linked Porphyrin Array
    Hiroshi SEGAWA, Daiki MACHIDA, Yutaka SENSHU, Jotaro NAKAZAKI
    51st SPSJ Symposium on Macromolecules (Kita-Kyushu, Oct.2-4, 2002)
     

Porphyrin J-Aggregates

Now, aggregated species of porphyrins are also under investigation.

Oral Presentations

  • Water-Insoluble Porphyrin J-Aggregates (13) Excitation Energy Transfer in LB Films of Mixed J-Aggregates
    Hai-bin WANG, Masaki SAKAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    86th Annual Meeting of Chemical Society of Japan (Funabashi/Chiba, Mar.27-30, 2006) 1PC-092
     
  • Langmuir-Blodgett Films of Water-Insoluble Porphyrin J-Aggregates
    Hiroshi SEGAWA, Shinsuke OKADA, Masaki SAKAI, Hai-bin WANG, Jotaro NAKAZAKI
    PACIFICHEM2005 (Honolulu/Hawaii, Dec.15-20, 2005)
     
  • Structure and Function of Porphyrin J-Aggregate LB Films
    Hiroshi SEGAWA, Masaki SAKAI, Haibin WANG, Jotaro NAKAZAKI
    54th SPSJ Symposium on Macromolecules (Yamagata, Sep.20-22, 2005) 2N11
     
  • Water-Insoluble Porphyrin J-Aggregates (12) Optical Waveguide Spectroscopy of LB Films of J-Aggregates
    Haibin WANG, Masaki SAKAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2005 (Fukuoka, Sep.12-14, 2005) 1C17
     
  • Photoinduced Electron Transfer Reaction in Porphyrin J-Aggregates
    Yonbon ARAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2005 (Fukuoka, Sep.12-14, 2005) 1C18
     
  • Electrochemical Reduction of Nano-Structured Water-Soluble Porphyrin J-Aggregates
    Yonbon ARAI, Takaki NEDACHI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    72nd Annual Meetings of Electrochemical Society of Japan (Kumamoto, Apr.1-3, 2005) 3K05
     
  • Water-Insoluble Porphyrin J-Aggregates (11) Excitation Energy Transfer in Hetero LB Films of J-Aggregates
    Masaki SAKAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    85th Annual Meetings of Chemical Society of Japan (Yokohama, Mar.26-29, 2005) 1D3-18
     
  • LB Films of Water-Insoluble Porphyrin J-Aggregates
    Masaki SAKAI, Shinsuke OKADA, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    15th MRS-J (Materials Research Society of Japan) Academic Symposium (Kanda/Tokyo, Dec.23-24, 2004) B1-O05
     
  • Control of Hieralchial Structure of Protonated Porphyrin J-Aggregates
    Hiroshi SEGAWA, Jotaro NAKAZAKI, Masaki SAKAI, Shinsuke OKADA, Yonbon ARAI, Takaki NEDACHI, Noriko HORIKAWA
    Symposium of Photochemistry 2004 (Tsukuba, Nov.1-3, 2004) 1C19
     
  • Water-Insoluble Porphyrin J-Aggregates (10) Properties of Hetero LB Films of J-Aggregates
    Masaki SAKAI, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2004 (Tsukuba, Nov.1-3, 2004) 1C20
     
  • Electrochemical Doping of Protonated meso-Tetrakis(sulfothienyl)porphyrin J-Aggregates
    Yonbon ARAI, Takaki NEDACHI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Collabolative Meetings of Electrochemical Societies of USA and Japan 2004 (Honolulu/USA, Oct.3-8, 2004) Q2-1607
     
  • Water-Insoluble Porphyrin J-Aggregates (9) Fablication of LB Films of J-Aggregates
    Masaki SAKAI, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    53rd SPSJ Symposium on Macromolecules (Sapporo, Sep.15-17, 2004) 2U01
     
  • Control of Three-Dimensional Nano-Structures of Protonated Porphyrin J-Aggregates
    Hiroshi SEGAWA, Jotaro NAKAZAKI, Masaki SAKAI, Shinsuke OKADA, Yonbon ARAI, Takaki NEDACHI, Noriko HORIKAWA
    53rd SPSJ Symposium on Macromolecules (Sapporo, Sep.15-17, 2004) 2G03
     
  • Control of Nano-Structures of LB Films of Porphyrin J-Aggregates
    Masaki SAKAI, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    57th Symposium on Colloid and Surface Chemistry (Onoda/Yamaguchi, Sep.9-11, 2004) 1A15
     
  • Nano-Structure of Protonated Water-Insoluble Porphyrin J-Aggregates Formed at Air-Water Interface
    Hiroshi SEGAWA, Jotaro NAKAZAKI, Masaki SAKAI, Shinsuke OKADA, Noriko HORIKAWA
    ICPP3 (3rd International Conference of Porphyrins and Phthalocyanines) (New Orleans/USA, Jul.11-16, 2004)
     
  • Water-Insoluble Porphyrin J-Aggregates (8) Self-Assembled Monolayer of J-Aggregate at Air-Water Interface
    Masaki SAKAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    84th Annual Meeting of Chemical Society of Japan (Nishinomiya/Hyogo, Mar.26-29, 2004)
     
  • Control of Structures of J-Aggregetes of Tetrakis(sulfothienyl)porphyrins
    Yonbon ARAI, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    84th Annual Meeting of Chemical Society of Japan (Nishinomiya/Hyogo, Mar.26-29, 2004)
     
  • Water-Insoluble Porphyrin J-Aggregates (7) Controlling Structure of Aggregation by Means of Air-Water Interface
    Hiroshi SEGAWA, Shinsuke OKADA, Masaki SAKAI, Noriko HORIKAWA, Jotaro NAKAZAKI
    Symposium of Photochemistry 2003 (Matsue, Nov.22-24, 2003)
     
  • Physical Properties and Functionalities of Tetrakis(sulfothienyl)porphyrin J-Aggregates
    Yonbon ARAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2003 (Matsue, Nov.22-24, 2003)
     
  • Water-Insoluble Porphyrin J-Aggregates (6) Controlling Physical Properties of LB-Film of Porphyrin J-Aggregates
    Masaki SAKAI, Jotaro NAKAZAKI, Hiroshi SEGAWA
    Symposium of Photochemistry 2003 (Matsue, Nov.22-24, 2003)
     
  • Water-Insoluble Porphyrin J-Aggregates (5) Construction of Nano-Structures for Controlling Excitonic Properties
    Shinsuke OKADA, Masaki SAKAI, Noriko HORIKAWA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    52nd SPSJ Symposium on Macromolecules (Yamaguchi, Sep.24-26, 2003)
     
  • Properties of Functions of Porphyrin J-Aggregates: Substituent Effect of Anionic Porphyrin
    Yonbon ARAI, Shinsuke OKADA, Jotaro NAKAZAKI, Hiroshi SEGAWA
    83rd Annual Meeting of Chemical Society of Japan (Waseda/Tokyo, Mar.18-21, 2003)
     
  • Properties and Functionalities of Porphyrin J-Aggregates Nano-Crystals
    Hiroshi SEGAWA, Shinsuke OKADA, Takaki NEDACHI, Yonbon ARAI, Jotaro NAKAZAKI
    Symposium of Photochemistry 2002 (Kyoto, Sep.11-13, 2002)
     

Spin-Polarized Molecular Wire

Molecule-based quantum spin device is currently under investigation at Prof. Sugawara's group.

Journal Articles

Design of Spin-Polarized Molecular Wire as a Prototypal Unimolecular Quantum Spin Device
  Jotaro NAKAZAKI, InGwon CHUNG, Ryoji WATANABE, Toshiyuki ISHITSUKA, Yuzo KAWADA, Michio M. MATSUSHITA, Tadashi SUGAWARA
Internet Electronic Journal of Molecular Design (http://www.biochempress.com), 2003, 2, 112-127.
 
Design and Preparation of Pyrrole-Based Spin-Polarized Donors
  Jotaro NAKAZAKI, InGwon CHUNG, Michio M. MATSUSHITA, Tadashi SUGAWARA, Ryoji WATANABE, Akira IZUOKA, Yuzo KAWADA
Journal of Materials Chemistry, 2003, 13, 1011-1022. (Link)
 
Ground State Spin Multiplicity of Cation Diradicals Derived from Pyrroles Carrying Nitronyl Nitroxide
  Jotaro NAKAZAKI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
Molecular Crystals and Liquid Crystals 1997, 306, 81-88.
 

Thesis for Master's degree (Jan.24, 1997)
  • Spin Alignment Based on a Polaronic Mechanism in Pyrrole Derivatives

    Oral Presentations

    • Prototypal Quantum Spin Device with Spin-Rectifying Function
      Jotaro NAKAZAKI, InGwon CHUNG, Ryoji WATANABE, Akira IZUOKA, Tadashi SUGAWARA
      Forum on 'Manipulating Spin System' (Tokyo/Komaba, Mar.13-14, 2001)
       
    • Prototypal Organic Quantum Spin Device Composed of Spin-Polarized Donors
      Tadashi SUGAWARA, Jotaro NAKAZAKI, Mats O. SANDBERG, Yoshihiro ISHIKAWA, InGwon CHUNG, Genta HARADA, Akira IZUOKA
      4th Symposium of Quantum Effects and Related Phenomena (Tokyo/Sendagaya, Dec.20-21, 2000)
       
    • Synthesis and Property of Thiophene-Pyrrole Hybrid-Oligomer Carrying para-Phenylene Nitronyl Nitroxide
      InGwon CHUNG, Jotaro NAKAZAKI, Tadashi SUGAWARA, Ryoji WATANABE, Akira IZUOKA, Yuzo KAWADA
      30th Symposium of Structural Organic Chemistry (Kyoto, Sep.29-Oct.1, 2000)
       
    • Synthesis and Property of Thiophene-Pyrrole Hybrid-Oligomer Carrying para-Phenylene Nitronyl Nitroxide
      InGwon CHUNG, Jotaro NAKAZAKI, Tadashi SUGAWARA, Ryoji WATANABE, Akira IZUOKA, Yuzo KAWADA
      30th Symposium of Structural Organic Chemistry (Kyoto, Sep.29-Oct.1, 2000)
       
    • Magnetic Property of Spin-Polarized Donors Carrying Oligothiophene Moieties
      InGwon CHUNG, Jotaro NAKAZAKI, Tadashi SUGAWARA, Ryoji WATANABE, Akira IZUOKA, Yuzo KAWADA
      Symposium of Molecular Structure 2000 (Tokyo/Komaba, Sep.27-30, 2000)
       
    • Approach to Molecular Ferromagnetic Wire Derived from Spin-Polarized Pyrrole-Type Donor-Radical
      Tadashi SUGAWARA, InGwon CHUNG, Jotaro NAKAZAKI, Mats O. SANDBERG, Ryoji WATANABE, Akira IZUOKA, Yuzo KAWADA
      ICMM 2000 (7th International Conferenece on Molecule-Based Magnets) (USA/Texas, Sep.16-21, 2000)
       
    • Electronic Structure of Cation Diradicals of Pyrrole Derivatives Substituted with Nitronyl Nitroxide (2)
      Jotaro NAKAZAKI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
      Symposium of Molecular Structure '96 (Fukuoka, Oct.6-9, 1996)
       
    • Spin Alignment in Pyrrole Derivatives Carrying Radical Moieties
      Jotaro NAKAZAKI
      28th Summer School of Structural Organic Chemistry (Gunma/Kita-Karuizawa, Aug.2-5, 1996)
       
    • Ground State Spin Multiplicity of Cation Diradicals Derived from Pyrroles Carrying Nitronyl Nitroxide
      Jotaro NAKAZAKI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
      ICMM'96 (5th International Conference on Molecule-Based Magnets : Osaka/Senri, Jul.15-21, 1996)
       
    • Electronic Structure of Cation Diradicals of Pyrrole Derivatives Substituted with Nitronyl Nitroxide
      Jotaro NAKAZAKI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
      Symposium of Molecular Structure '95 (Sendai, Sep.22-25, 1995)
       

    Presentations including my results

    • Hyper-Structured Molecules for Organic Quantum Device Application
      Hiroyuki SASABE, Tadashi SUGAWARA
      1st Ending Symposium of Quantum Effects and Related Phenomena (Tokyo/Ichigaya, Jun.6, 2001)
       
    • Overview of Project of Quantum Spin Device
      Tadashi SUGAWARA
      Forum on 'Manipulating Spin System' (Tokyo/Komaba, Mar.13-14, 2001)
       
    • From Manipulating Spin System to Unimolecular Spin Device
      Tadashi SUGAWARA
      Forum on 'Manipulating Spin System' (Tokyo/Komaba, Mar.13-14, 2001)
       
    • Manipulating Spin System Derived from Spin-Polarized Donor
      Tadashi SUGAWARA
      PACIFICHEM 2000 (Hawaii/Honolulu, Dec.16-21, 2000)
       
    • Prospect of Molecular Magnetism
      Tadashi SUGAWARA
      3rd Symposium on Iodine Utilization (Chiba, Nov.24-25, 2000)
       

    Organic Conductive Magnet

    I made much efforts to realize organic conductive magnets during my doctor's course.

    Thesis for Ph.D degree (Dec.17, 1999)

  • Spin-Polarized Donors as a Building Block for Organic Conductive Magnets

    Journal Articles

    Preparation of Isolable Ion-Radical Salt Derived from TTF-Based Spin-Polarized Donor
      Jotaro NAKAZAKI, Yoshihiro ISHIKAWA, Akira IZUOKA, Tadashi SUGAWARA, Yuzo KAWADA
    Chemical Physics Letters 2000, 319, 385-390.
     
    New Synthesis of 2-[1,3-Dithiol-2-ylidene]-5,6-dihydro-1,3-dithiolo[4,5-b][1,4]dithiins with Formyl Group on Fused-Benzene, [1,4]Dithiin, or Thiophene Ring
      Yoshihiro ISHIKAWA, Tomoko MIYAMOTO, Asami YOSHIDA, Yuzo KAWADA, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
    Tetrahedron Letters 1999, 40, 8819-8822.
     
    Novel Spin-Polarized TTF Donors Affording Ground State Triplet Cation Diradicals
      Jotaro NAKAZAKI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
    Tetrahedron Letters 1999, 40, 5027-5030.
     

    Oral Presentations

    • Non-Linear Conduction Behavior in Ion-Radical Salts of TTF-Based Donor-Radical ETBN
      Hironori KAWAKAMI, Michio M. MATSUSHITA, Yoshihiro ISHIKAWA, Masaru MINAMOTO, Reiji KUMAI, Jotaro NAKAZAKI, Tadashi SUGAWARA
      Symposium on Molecular Structure 2002 (Kobe, Oct.1-4, 2002)
       
    • Carrier-Induced Non-Linear Conducting Behavior of (ETBN)2(ClO4)(1,1,1-TCE)0.5
      Yoshihiro ISHIKAWA, Michio M. MATSUSHITA, Hironori KAWAKAMI, Reiji KUMAI, Jotaro NAKAZAKI, Tadashi SUGAWARA
      ICSM2002 (International Conference of Synthetic Metals) (China/Shianghai, Jun.30-Jul.5, 2002)
       
    • Current Induced Non-Linear Conductivity of (ETBN)2(ClO4)(1,1,1-TCE)0.5
      Yoshihiro ISHIKAWA, Michio M. MATSUSHITA, Hironori KAWAKAMI, Reiji KUMAI, Jotaro NAKAZAKI, Tadashi SUGAWARA
      81st Annual Meeting of Chemical Society of Japan (Tokyo/Waseda, Mar.28-31, 2002)
       
    • Conduction Properties of Ion-Radical Salt Composed of -Conjugated Donor-Radical Molecules
      Jotaro NAKAZAKI, Yoshihiro ISHIKAWA, Michio M. MATSUSHITA, Tadashi SUGAWARA, Reiji KUMAI, Toshihiro TAKAHASHI
      ConCOM2002 (International Workshop on Conduction Controling in Organic Metal: Kanagawa/Shonan, Jan.29, 2002)
       
    • Organic Conductive Magnets Constructed by TTF-Based Spin Polarized Donors
      Yoshihiro ISHIKAWA, Jotaro NAKAZAKI, Jun TANABE, Akira IZUOKA, Yuzo KAWADA, Tadashi SUGAWARA
      Forum on 'Manipulating Spin System' (Tokyo/Komaba, Mar.13-14, 2001)
       
    • Synthesis and Property of a Novel Benzo-Annulated Donor Radical Incorporating a Tetrathiapentalene Skeleton (2)
      Yoshihiro ISHIKAWA, Jotaro NAKAZAKI, Tadashi SUGAWARA, Akira IZUOKA, Yuzo KAWADA
      30th Symposium of Structural Organic Chemistry (Kyoto, Sep.29-Oct.1, 2000)
       
    • Construction of Organic Conductive Magnet Composed of Spin-Polarized Donors
      Jotaro NAKAZAKI, Yoshihiro ISHIKAWA, Akira IZUOKA, Tadashi SUGAWARA
      ICMM 2000 (7th International Conferenece on Molecule-Based Magnets) (USA/Texas, Sep.16-21, 2000)
       
    • Approach to an Organic Conductive Magnet Composed of TTP-Based Spin-Polarized Donors
      Jotaro NAKAZAKI
      32th Summer School of Structural Organic Chemistry (Tokyo/Hachioji, Aug.11-14, 2000)
       
    • Synthesis and Property of a Novel Benzo-Annulated Donor Radical Incorporating a Tetrathiapentalene Skeleton
      Yoshihiro ISHIKAWA, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      78th Annual Meeting of Chemical Society of Japan (Funabashi, Mar.28-31, 2000)
       
    • Electron Transportational Spin System Composed of Spin-Polarized Donor
      Tadashi SUGAWARA, Akira IZUOKA, Hiromi SAKURAI, Jotaro NAKAZAKI
      Japanese Applied Physics Society - Chemical Society of Japan Joint Symposium (Tokyo, Mar.27, 2000)
       
    • Preparation and Property of Ion Radical Salts of Spin-Polarized TTF Donors
      Jotaro NAKAZAKI, Yoshihiro ISHIKAWA, Akira IZUOKA, Tadashi SUGAWARA
      Symposium of Molecular Structure '99 (Osaka/Toyonaka, Sep.27-30, 1999)
       
    • Preparation and Property of Ion Radical Salts of Benzo-Annelated TTF Donor Radical
      Yoshihiro ISHIKAWA, Shinichi TANIGUCHI, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA, Tomoko MIYAMOTO, Asami YOSHIDA, Yuzo KAWADA
      29th Symposium of Structural Organic Chemistry (Urawa, Sep.20-22, 1999)
       
    • Preparation of N-Phenylpyrrole Annelatad TTF Donor Radical
      Ryoji WATANABE, Yuzo KAWADA, Yoshihiro ISHIKAWA, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      29th Symposium of Structural Organic Chemistry (Urawa, Sep.20-22, 1999)
       
    • Preparation of Ion Radical Salts of Spin-Polarized TTF Donors
      Jotaro NAKAZAKI
      31st Summer School of Structural Organic Chemistry (Kobe, Aug.9-11, 1999)
       
    • Preparation of Ion Radical Salts of Spin-Polarized TTF Donors
      Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      4th International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Kanagawa/Oiso, Jun.29-Jul.1, 1999)
       
    • Preparation and Property of a Phenylthio-Connected Spin-Polarized TTF Donor
      Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      76th Annual Meeting of Chemical Society of Japan (Yokohama, Mar.28-31, 1999)
       
    • Spin Alignement in Spin-Polarized Donor Cation Radicals
      Akira IZUOKA, Jotaro NAKAZAKI, Toshio JIN, Tadashi SUGAWARA
      2nd Symposium of Quantum Effects and Related Physical Phenomena (Tokyo/Otemachi, Dec.21-22, 1998)
       
    • Preparation of Novel Spin-Polarized TTF Donors
      Yoshihiro ISHIKAWA, Yuzo KAWADA, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      28th Symposium of Structural Organic Chemistry (Higashi-Hiroshima, Nov.21-23, 1998)
       
    • Magnetic Property of Oxidized Species of a Spin-Polarized TTF Donor
      Jotaro NAKAZAKI, Toshio JIN, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
      Symposium of Molecular Structure '98 (Matsuyama, Sep.16-19, 1998)
       
    • Spin Alignment in Spin-Polarized Donors
      Akira IZUOKA, Jotaro NAKAZAKI, Hiromi SAKURAI, Mats O. SANDBERG, Toshio JIN, Michio M. MATSUSHITA, Tadashi SUGAWARA
      Symposium of Molecular Structure '98 (Matsuyama, Sep.16-19, 1998)
       
    • Examination of Magnetic Property of Oxidized Species of Spin-Polarized TTF Donors
      Jotaro NAKAZAKI
      30th Summer School of Structural Organic Chemistry (Hiroshima/Fukuyama, Aug.9-12, 1998)
       
    • Controllable High-Spin System through Organic Redox Processes
      Akira IZUOKA, Mats O. SANDBERG, Jotaro NAKAZAKI, Hiromi SAKURAI, Tadashi SUGAWARA
      1st Symposium of Quantum Effects and Related Physical Phenomena (Tokyo/Otemachi, Dec.18-19, 1997)
       
    • Electronic Structures and Magnetic Properties of Nitronyl Nitroxide Substituted TTF Donors
      Michio M. MATSUSHITA, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      Symposium of Molecular Structure '97 (Nagoya, Oct.2-5, 1997)
       

    Presentations including my results

    • Design and Preparation of Spin-Polarized Donor as a Novel Spin System
      Akira IZUOKA
      77th Annual Meeting of Chemical Society of Japan (Sapporo, Sep.23-26, 1999)
       
    • The History of Molecular Magnetism Viewed from Structural Organic Chemistry
      Tadashi SUGAWARA
      29th Symposium of Structural Organic Chemistry (Urawa, Sep.20-22, 1999)
       
    • Novel Spin Systems Derived from Spin-Polarized Donors
      Tadashi SUGAWARA
      4th International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Kanagawa/Oiso, Jun.29-Jul.1, 1999)
       
    • Approach to Quantum Spin Device Derived from Manipulating Organic Spin System
      Tadashi SUGAWARA
      2nd SANKEN International Symposium (Osaka, Jan.26, 1999)
       
    • Manipulating Organic Spin System
      Tadashi SUGAWARA
      ICMM'98 (6th International Conference on Molecule-Based Magnets : France/Bordeaux, Sep.14, 1998)
       
    • Physical Properties of Charge Transfer Complexes Composed of Spin-Polarized Donors
      Tadashi SUGAWARA
      Gordon Research Conference (USA/Rhode Island, Aug.13, 1998)
       

    Polaronic High Spin Polypyrroles

    • Organic Molecular Spin System
      Tadashi SUGAWARA
      1st Symposium of Quantum Effects and Related Physical Phenomena (Tokyo/Otemachi, Dec.18-19, 1997)
       
    • Preparation of Hyper-Structured Polaronic High Spin Polypyrroles
      Jotaro NAKAZAKI, Akiko KUMAKURA, Akira IZUOKA, Tadashi SUGAWARA
      1st Symposium of Quantum Effects and Related Physical Phenomena (Tokyo/Otemachi, Dec.18-19, 1997)
       
    • Controllable High-Spin System through Organic Redox Processes
      Tadashi SUGAWARA
      102nd Meeting of Applied Magnetism Society of Japan (Tokyo, Nov.21, 1997)
       
    • High Spin Electronic States Controlled by Organic Redox Processes
      Tadashi SUGAWARA
      HARIMA International Symposium (Harima, Oct.17, 1997)
       
    • Preparation of Polaronic High Spin Polypyrroles
      Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      27th Symposium of Structural Organic Chemistry (Osaka/Sakai, Oct.8-9, 1997)
       
    • Preparation of Polaronic High Spin Pyrrole Oligomers
      Jotaro NAKAZAKI
      29th Summer School of Structural Organic Chemistry (Oita/Kuju, Jul.31-Aug.3, 1997)
       
    • High Spin Electronic States Controlled by Organic Redox Processes
      Tadashi SUGAWARA
      2nd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Sapporo, May 30-Jun.1, 1997)
       
    • Preparation of Polaronic High Spin Polypyrroles
      Jotaro NAKAZAKI
      2nd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Sapporo, May 30-Jun.1, 1997)
       
    • Integrated Molecular Spin System
      Tadashi SUGAWARA
      1st International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Gunma/Kusatsu, Nov.4-6, 1996)
       
    • Preparation of Polaronic High Spin Polypyrroles
      Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      26th Symposium of Structural Organic Chemistry (Nagoya, Nov.1-3, 1996)
       
    • Molecular Magnetism: Present and Future
      Tadashi SUGAWARA
      ICMM'96 (5th International Conference on Molecule-Based Magnets : Osaka/Senri, Jul.15-21, 1996)
       

    Books

    Design of Organic Quantum Spin Device
      Tadashi SUGAWARA, Jotaro NAKAZAKI
    Kagaku Frontier (Frontier of Chemistry) No.6 "Molecular Nano-Technology" (K. Matsushige, K. Tanaka eds., Kagaku Dojin, 2002) pp.139-148.
     
    Self-Assembling Organic Ferromagnet: Frontier Orbital Control of Spin-Polarized Organic Radicals
      Tadashi SUGAWARA, Jotaro NAKAZAKI, Michio M. MATSUSHITA
    Nanotechnology toward the Organic Photonics (H. Sasabe ed., GooTech Ltd., 2002) pp.41-67.
     
    Spin Controlling -- New Developments of Molecular Magnetism
      Tadashi SUGAWARA, Jotaro NAKAZAKI
    Kagaku (Chemistry) 2000, 55(12), 64-65.
     
    Organic Paramagnetic Building Blocks for Ferromagnetic Materials
      Tadashi SUGAWARA, Michio M. MATSUSHITA, Jotaro NAKAZAKI
    Magnetic Properties of Organic Materials (P. M. Lahti ed., Marcel Dekker, New York, 1999), pp.535-552.
     

    Related Journal Articles and Books

    A Novel TTF-Based Donor Carrying Four Nitronyl Nitroxides
      Genta HARADA, Toshio JIN, Akira IZUOKA, Michio M. MATSUSHITA, Tadashi SUGAWARA
    Tetrahedron Letters 2003, 44, 4415-4418.
     
    Preparation and Characterization of Gold Nano-Particles Chemisorbed by -Radical Thiols
      Genta HARADA, Hiromi SAKURAI, Michio M. MATSUSHITA, Akira IZUOKA, Tadashi SUGAWARA
    Chemistry Letters 2002, 1030-1031.
     
    Charge Transfer Assisted Ferromagnetic Coupling Observed in an Ion-Radical Salt of a Cross-Cyclophane TTF-Based Donor
      Akira IZUOKA, Jun TANABE, Tadashi SUGAWARA, Tomoyuki KUDO, Tomohiro SAITO, Yuzo KAWADA
    Chemistry Letters 2002, 910-911.
     
    Formation of Self-Assembled Monolayer of Phenylthiol Carrying Nitronyl Nitroxide on Gold Surface
      Michio M. MATSUSHITA, Naoto OZAKI, Tadashi SUGAWARA, Fumio NAKAMURA, Masahiko HARA
    Chemistry Letters 2002, 596-597.
     
    Electronically Controllable High Spin Systems Realized by Spin-Polarized Donors
      Tadashi SUGAWARA, Hiromi SAKURAI, Akira IZUOKA
    Hyper-Structured Molecules II : Chemistry, Physics, and Applications (H. Sasabe ed., Gordon&Breach, 2000), pp.35-57.
     
    Spin Alignment via Conduction Electrons
      Tadashi SUGAWARA, Akira IZUOKA, Reiji KUMAI
    Molecular Magnetism - New Magnetic Materials (K. Itoh, M. Kinoshita eds., Kodansha Gordon&Breach, 2000), 239-251.
     
    Design, Preparation and Electronic Structure of High-Spin Cation Diradicals Derived from Amine-Based Spin-Polarized Donors
      Hiromi SAKURAI, Akira IZUOKA, Tadashi SUGAWARA
    Journal of the American Chemical Society 2000, 122, 9723-9734.
     
    Spin Alignment in Singly Oxidized Spin-Polarized Diradical Donor: Thianthrene bis(nitronyl nitroxide)
      Akira IZUOKA, Mayumi HIRAISHI, Taro ABE, Tadashi SUGAWARA, Kazunobu SATO, Takeji TAKUI
    Journal of the American Chemical Society 2000, 122, 3234-3235.
     
    One-Dimensional Double Chain Composed of Carbamoylmethylthio-Substituted TTF-Based Donor in Ion Radical Salt
      Go ONO, Hiroshi TERAO, Saburo HIGUCHI, Tadashi SUGAWARA, Akira IZUOKA, Tomoyuki MOCHIDA
    Journal of Materials Chemistry 2000, 10, 2277-2282.
     
    Approach to Hyper-Structured High Spin Molecules
      Tadashi SUGAWARA
    Hyper-Structured Molecules I : Chemistry, Physics, and Applications (H. Sasabe ed., Gordon&Breach, 1999), pp.101-127.
     
    Manipulating Spin System
      Tadashi SUGAWARA
    Molecular Crystals and Liquid Crystals 1999, 334, 257-273.
     
    Molecular Magnetism: Present and Future
      Tadashi SUGAWARA, Akira IZUOKA
    Molecular Crystals and Liquid Crystals 1997, 305, 41-54.
     
    Coexistence of Electric Conductivity and Magnetism in the Ion-Radical Salts of a Cross-Cyclophane Twin Donor
      A. Izuoka, J. Tanabe, T. Sugawara, Y. Kawada, R. Kumai, A. Asamitsu, Y. Tokura
    Molecular Crystals and Liquid Crystals 1997, 306, 265-270.
     
    Structure and Property of Cross-Cyclophane Twin Donors
      J. Tanabe, G. Ono, A. Izuoka, T. Sugawara, T. Kudo, T. Saito, M. Okamoto, Y. Kawada
    Molecular Crystals and Liquid Crystals 1997, 296, 61-76.
     

    Related Oral Presentations

    [Spin-Polarized Polyradical Donors]

    • Redox Active Spin Systems Composed of Hyper-Structured Spin-Polarized Donors
      Genta HARADA, Toshio JIN, Hiromi SAKURAI, Akira IZUOKA, Michio M. MATSUSHITA, Tadashi SUGAWARA
      Forum on 'Manipulating Spin System' (Tokyo/Komaba, Mar.13-14, 2001)
       
    • Synthesis and Structure of a TTF-based Tetraradical Donor
      Toshio JIN, Genta HARADA, Akira IZUOKA, Tadashi SUGAWARA
      30th Symposium of Structural Organic Chemistry (Kyoto, Sep.29-Oct.1, 2000)
       
    • Syntheses and Properties of Oligothiophenes Carrying Nitronyl Nitroxides at Both Ends
      InGwon CHUNG, Akira IZUOKA, Tadashi SUGAWARA
      78th Annual Meeting of Chemical Society of Japan (Funabashi, Mar.28-31, 2000)
       
    • Approach to Organic Quantum Spin Device
      Tadashi SUGAWARA, Akira IZUOKA, Hiromi SAKURAI
      3rd Symposium of Quantum Effects and Related Phenomena (Tokyo/Sendagaya, Dec.21-22, 1999)
       
    • Spin State Conversion through One-Electron Oxidation by Iodine
      Tadashi SUGAWARA, Akira IZUOKA, Hiromi SAKURAI
      2nd Symposium on Iodine Utilization (Chiba, Oct.16-17, 1999)
       
    • Spin Alignment in Singly Oxidized Spin-Polarized Diradical Donors
      Hiromi SAKURAI, Akira IZUOKA, Mayumi HIRAISHI, Taro ABE, Tadashi SUGAWARA
      4th International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Kanagawa/Oiso, Jun.29-Jul.1, 1999)
       
    • Preparation of TTF-based Spin-Polarized Donor Possessing Four Nitronyl Nitroxide Groups
      Toshio JIN, Akira IZUOKA, Tadashi SUGAWARA
      76th Annual Meeting of Chemical Society of Japan (Yokohama, Mar.28-31, 1999)
       
    • Syntheses and Properties of Spin-Polarized Donors. Nitroxide Monoradicals and Biradicals of Oligothiophenes
      InGwon CHUNG, Akira IZUOKA, Tadashi SUGAWARA
      76th Annual Meeting of Chemical Society of Japan (Yokohama, Mar.28-31, 1999)
       
    • Magnetic Property of Gold Nanoparticles Chemisorbed by Organic Radicals
      Hiromi SAKURAI, Masaki TAKAHASHI, Akira IZUOKA, Tadashi SUGAWARA
      2nd Symposium of Quantum Effects and Related Physical Phenomena (Tokyo/Otemachi, Dec.21-22, 1998)
       
    • Manipulating Organic Spin System
      Tadashi SUGAWARA
      3rd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Shiga/Otsu, Jun.9-11, 1998)
       
    • Synthesis of Gold Nanoparticles Chemisorbed by Organic Radicals
      Hiromi SAKURAI
      3rd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Shiga/Otsu, Jun.9-11, 1998)
       
    • Prospect of Organic Quantum Devices
      Tadashi SUGAWARA
      3rd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Shiga/Otsu, Jun.9-11, 1998)
       
    • Redox Behaviors of Spin-Polarized Donors and Magnetic Properties of Their Oxidized Species
      Mayumi HIRAISHI, Taro ABE, Hiromi SAKURAI, Akira IZUOKA, Tadashi SUGAWARA
      74th Annual Meeting of Chemical Society of Japan (Kyoto/Kyotanabe, Mar.28-31, 1998)
       

    [Other]

    • Model Molecules for Neopentyl Substituted p-Phenylenediamine Based High Spin Polymers
      Mats O. SANDBERG, Akira IZUOKA, Tadashi SUGAWARA
      76th Annual Meeting of Chemical Society of Japan (Yokohama, Mar.28-31, 1999)
       
    • Preparation and Property of alt-m,p-Polyaniline
      Mats O. SANDBERG, Jotaro NAKAZAKI, Akira IZUOKA, Tadashi SUGAWARA
      28th Symposium of Structural Organic Chemistry (Higashi-Hiroshima, Nov.21-23, 1998)
       
    • Generation of High-Spin Solids by Protonation of Copolymers Derived from p-Phenylenediamines
      Mats O. SANDBERG
      3rd International Forum on Hyper-Structured Molecules for Organic Quantum Device Applications (Shiga/Otsu, Jun.9-11, 1998)
       
    • Generation of High-Spin Cation Radicals Derived from p-Phenylenediamine Derivatives
      Mats O. SANDBERG, Hiromi SAKURAI, Akira IZUOKA, Tadashi SUGAWARA
      74th Annual Meeting of Chemical Society of Japan (Kyoto/Kyotanabe, Mar.28-31, 1998)
       

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