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Development of Multiradical Ligands and Multinuclear High-Spin Complexes toward Room-Temperature Molecular Magnets

Research Project

Project/Area Number 15K17841
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Functional solid state chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

OKAZAWA Atsushi  東京大学, 大学院総合文化研究科, 助教 (30568275)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords分子性磁性体 / 金属錯体 / 有機ラジカル / 交換相互作用 / 希土類イオン / 構造磁性相関 / マルチラジカルキレート / 分子性固体 / 磁性 / 分子磁石 / 遷移金属錯体 / 強磁性的相互作用 / 結晶構造解析
Outline of Final Research Achievements

Toward achieving room-temperature molecular magnets, we developed a novel multiradical and multichelating ligand, which has a chelating ability on multiple radical functional groups, and its polynuclear complexes.
(1) One-dimensional metal complexes were successfully obtained by complexing the radical ligand with copper(II) chloride and bromide. The complexes showed extremely strong metal-radical magnetic couplings (~1000 K) beyond a thermal energy of room temperature, which were clarified by means of magnetic measurements and quantum chemical calculations.
(2) Dinuclear lanthanide(III)-radical complexes were synthesized, where we demonstrated a coordination ability to lanthanide ions on the two radical moieties in the multiradical lingad.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (35 results)

All 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Acknowledgement Compliant: 1 results,  Open Access: 2 results) Presentation (24 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] State University of Malang/Sepuluh Nopember Institute of Technology(インドネシア)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Magnetic Properties of V-Substitution Effect in an Iron Mixed Valence Complex2017

    • Author(s)
      N. Shida, Y. Suzawa, M. Inaba, A. Okazawa, N. Kojima, M. Enomoto
    • Journal Title

      Polyhedron

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magneto-Structural Relationship on Strong Exchange Interactions between Chelating Nitroxide Radical and Transition-Metal Spins2017

    • Author(s)
      A. Okazawa
    • Journal Title

      IOP Conf. Ser.: Mater. Sci. Eng.

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Small-Angle X-Ray Scattering Study on PVA/Fe3O4 Magnetic Hydrogels2016

    • Author(s)
      Sunaryono, Ahmad Taufiq, Edy Giri Rahman Putra, Atsushi Okazawa, Isao Watanabe, Norimichi Kojima, Supagorn Rugmai, Siriwat Soontaranon, Mohammad Zainuri, Triwikantoro, Suminar Pratapa, Darminto
    • Journal Title

      NANO

      Volume: 11 Issue: 03 Pages: 1650027-1650027

    • DOI

      10.1142/s1793292016500272

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis and Magnetic Properties of Linear Two-Coordinate Monomeric Diaryliron(II) Complexes Bearing Fused-Ring Bulky “Rind” Groups2016

    • Author(s)
      Shun Goda, Masanori Nikai, Mikinao Ito, Daisuke Hashizume, Kohei Tamao, Atsushi Okazawa, Norimichi Kojima, Hiroyuki Fueno, Kazuyoshi Tanaka, Yoshio Kobayashi, and Tsukasa Matsuo
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 印刷中 Issue: 6 Pages: 636-638

    • DOI

      10.1246/cl.160216

    • NAID

      130005155021

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetic property and Mössbauer analysis of SrSn1-xFexO3 prepared by a sol-gel method2016

    • Author(s)
      Kiyoshi Nomura, Shigeyo Suzuki, Yuya Koike, Hongling Li, Atsushi Okazawa, Norimichi Kojima
    • Journal Title

      Hyperfine Interactions

      Volume: 237 Issue: 1

    • DOI

      10.1007/s10751-016-1260-2

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mössbauer and XRD analysis of corrosion products on weathering steel treated by wet-dry cycles using various solutions2016

    • Author(s)
      Matashige Oyabu, Kiyoshi Nomura , Yuya Koike, Atsushi Okazawa
    • Journal Title

      Hyperfine Interactions

      Volume: 237 Issue: 1

    • DOI

      10.1007/s10751-016-1244-2

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a Photoresponsive Organic–Inorganic Hybrid Magnet: Layered Cobalt Hydroxides Intercalated with Spiropyran Anions2015

    • Author(s)
      Naru Tanaka, Atsushi Okazawa, Akira Sugahara, Norimichi Kojima
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 88 Issue: 8 Pages: 1150-1155

    • DOI

      10.1246/bcsj.20150129

    • NAID

      130005092043

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nanoscale Clustering and Magnetic Properties of MnxFe3-xO4 Particles Prepared from Natural Magnetite2015

    • Author(s)
      Ahmad Taufiq, Sunaryono, Edy Giri Rachman Putra, Atsushi Okazawa, Isao Watanabe, Norimichi Kojima, Suminar Pratapa, Darminto
    • Journal Title

      Journal of Superconductivity and Novel Magnetism

      Volume: 28 Issue: 9 Pages: 2855-2863

    • DOI

      10.1007/s10948-015-3111-9

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Rind配位子を用いた直線二配位鉄(I)錯体の動的スピン挙動2017

    • Author(s)
      岡澤厚・二階正憲・羽村将宏・合田舜・早川直輝・松尾司
    • Organizer
      日本化学会 第97春季年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] CaおよびTiの置換によるSr(Sn,Fe)O3の磁気特性とMossbauerスペクトル2017

    • Author(s)
      水沼丈也、鈴木茂世、小池裕也、野村貴美、岡澤厚
    • Organizer
      第18回メスバウアー分光研究会シンポジウム
    • Place of Presentation
      東京理科大学森戸記念館 (東京都・新宿区)
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] ビピリジン骨格を有する有機アクセプター分子と鉄錯体ドナーからなるベイポクロミック電荷移動塩における構造未知相の粉末 X 線構造解析2016

    • Author(s)
      田中李叶子・小中尚・佐々木明登・岡澤厚・小島憲道・松下信之
    • Organizer
      日本結晶学会平成28年度年会
    • Place of Presentation
      茨城県立県民文化センター (茨城県・水戸市)
    • Year and Date
      2016-11-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Magneto-Structural Relationship on Strong Exchange Interactions between Chelating Radical and Transition-Metal Spins2016

    • Author(s)
      A. Okazawa
    • Organizer
      The 4th International Conference on Advanced Materials Science and Technology (ICAMST2016)
    • Place of Presentation
      マラン (インドネシア)
    • Year and Date
      2016-09-27
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ビピリジン骨格を有する有機アクセプターと鉄錯体ドナーからなる電荷移動塩における固相合成相の結晶構造2016

    • Author(s)
      田中李叶子・岡澤厚・小島憲道・松下信之
    • Organizer
      第25回有機結晶シンポジウム
    • Place of Presentation
      京都大学吉田南キャンパス (京都府・京都市)
    • Year and Date
      2016-09-18
    • Related Report
      2016 Annual Research Report
  • [Presentation] 鎖状二価カチオンがもたらす鉄混合原子価錯体における磁性層の歪みによる電荷移動挙動の変化2016

    • Author(s)
      矢口寛・佐々木翔太郎・榎本真哉・岡澤厚・小島憲道
    • Organizer
      錯体化学会第66回討論会
    • Place of Presentation
      福岡大学七隈キャンパス (福岡県・福岡市)
    • Year and Date
      2016-09-10
    • Related Report
      2016 Annual Research Report
  • [Presentation] Syntheses, Crystal Structures, and Magnetic Properties of Copper(II) Complexes with Bischelate and High-Spin Biradical Ligand2016

    • Author(s)
      A. Okazawa, T. Ishida, K. Ogawa, N. Kojima
    • Organizer
      The 15th International Conference on Molecule-Based Magnets (ICMM2016)
    • Place of Presentation
      仙台国際センター (宮城県・仙台市)
    • Year and Date
      2016-09-04
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Charge Transfer Phase Transition in an Iron-Mixed Valence Complex with Specific pi-Conjugated Cations as Intercalants2016

    • Author(s)
      M. Enomoto, M. Shirakawa, H. Izawa, K. Sato, A. Okazawa, N. Kojima
    • Organizer
      The 15th International Conference on Molecule-Based Magnets (ICMM2016)
    • Place of Presentation
      仙台国際センター (宮城県・仙台市)
    • Year and Date
      2016-09-04
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic Properties of V-Substitution Effect in an Iron Mixed Valence Complex2016

    • Author(s)
      N. Shida, T. Suzawa, A. Okazawa, N. Kojima, M. Enomoto
    • Organizer
      The 15th International Conference on Molecule-Based Magnets (ICMM2016)
    • Place of Presentation
      仙台国際センター (宮城県・仙台市)
    • Year and Date
      2016-09-04
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] [Dy2Ni]型錯体における単分子磁石挙動とスピンエネルギーダイアグラム2016

    • Author(s)
      岡澤 厚・野尻 浩之・石田 尚行・小島 憲道
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2016-03-24
    • Related Report
      2015 Research-status Report
  • [Presentation] Magnetic Properties of V-Substitution Effect in an Iron Mixed Valence Complex2016

    • Author(s)
      SHIDA, Norihiro; SUZAWA, Yoshiki; INABA, Michikazu; OKAZAWA, Atsushi; KOJIMA, Norimichi; ENOMOTO, Masaya
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2016-03-24
    • Related Report
      2015 Research-status Report
  • [Presentation] Pressure dependence of a ferromagnetic transition for cobalt layered hydroxides with diarylethene derivatives2016

    • Author(s)
      Yu Inada, Atsushi Okazawa, Norimichi Kojima, Masaya Enomoto
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2016-03-24
    • Related Report
      2015 Research-status Report
  • [Presentation] デカメチルメタロセニウムを挿入した鉄混合原子価錯体の合成と物性評価2016

    • Author(s)
      大橋 奈実・井田 博道・岡澤 厚・小島 憲道・榎本 真哉
    • Organizer
      日本化学会第96春季年会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2016-03-24
    • Related Report
      2015 Research-status Report
  • [Presentation] 鉄置換ニオブ酸リチウム系強誘電体薄膜の可視光起電力評価2016

    • Author(s)
      高橋秀輔・井上亮太郎・松尾拓紀・岡澤厚・小島憲道・石垣徹・吉田幸彦・野口祐二・宮山勝
    • Organizer
      第54回セラミックス基礎科学討論会
    • Place of Presentation
      アバンセ、グランデはがくれ(佐賀県佐賀市)
    • Year and Date
      2016-01-07
    • Related Report
      2015 Research-status Report
  • [Presentation] Syntheses and magnetic properties of transition-metal complexes with multichelating and high-spin radical ligands2015

    • Author(s)
      Atsushi Okazawa, Takayuki Ishida, Norimichi Kojima, Keiichiro Ogawa
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
    • Place of Presentation
      Hawaii Convention Center (Honolulu, USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect on the ferromagnetic transition temperature of the cobalt layered hydroxides by employment of the monovalent diarylethene derivative with a carboxyl group2015

    • Author(s)
      Yu Inada, Shoko Kubota, Atsushi Okazawa, Norimichi Kojima, Masaya Enomoto
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
    • Place of Presentation
      Hawaii Convention Center (Honolulu, USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Correlation between charge transfer on a magnetic layer of the iron mixed valence complex and molecular polarization of cationic intecalants2015

    • Author(s)
      Kazuma Arai, Hiromichi Ida, Atsushi Okazawa, Norimichi Kojima, Masaya Enomoto
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
    • Place of Presentation
      Hawaii Convention Center (Honolulu, USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Proton-responsive emission properties in cyclometalated iridium(III) complex film, [IrIII(bdp)3]@Nafion (bdp = 2,4’-(benzene-1,3-diyl)dipyridine)2015

    • Author(s)
      Hajime Kamebuchi, Yu Fujimura, Atsushi Okazawa, Makoto Tadokoro, Norimichi Kojima
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
    • Place of Presentation
      Hawaii Convention Center (Honolulu, USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of dilute magnetic materials - magnetic property and Mossbauer spectra of SrSnO3 doped with Fe and Sb2015

    • Author(s)
      Shigeyo Suzuki, Yuya Koike, Kiyoshi Nomura, Atsushi Okazawa, Norimichi Kojima
    • Organizer
      The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)
    • Place of Presentation
      Hilton Hawaiian Village (Honolulu, USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] ジヒドロビピリジニウムと鉄錯体からなる電荷移動塩の酸蒸気によるベイポクロミズム2015

    • Author(s)
      田中 李叶子・岡澤 厚・小島 憲道・松下 信之
    • Organizer
      第24回有機結晶シンポジウム
    • Place of Presentation
      広島大学霞キャンパス(広島県広島市)
    • Year and Date
      2015-11-01
    • Related Report
      2015 Research-status Report
  • [Presentation] 鉄置換ニオブ酸リチウム系強誘電体薄膜の光起電力特性2015

    • Author(s)
      高橋秀輔, 井上亮太郎, 松尾拓, 岡澤 厚, 小島憲道, 石垣 徹, 吉田幸彦, 野口祐二, 宮山 勝
    • Organizer
      第35回エレクトロセラミックス研究討論会
    • Place of Presentation
      東京工業大学大岡山キャンパス(東京都目黒区)
    • Year and Date
      2015-10-22
    • Related Report
      2015 Research-status Report
  • [Presentation] モノカルボン酸型ジアリールエテン誘導体を挿入したコバルト層状磁性体の磁気挙動変化2015

    • Author(s)
      稲田 雄・久保田 尚子・岡澤 厚・小島 憲道・榎本 真哉
    • Organizer
      錯体化学会第65回討論会
    • Place of Presentation
      奈良女子大学(奈良県奈良市)
    • Year and Date
      2015-09-21
    • Related Report
      2015 Research-status Report
  • [Presentation] 6.環状ジカチオンを挿入した鉄混合原子価錯体における磁性層の歪みと電荷移動挙動の変化2015

    • Author(s)
      須澤 嘉紀・佐々木 翔太郎・井田 博道・榎本 真哉・嶋田 紅葉・横田 香織・秋田 素子・岡澤 厚・小島 憲道
    • Organizer
      錯体化学会第65回討論会
    • Place of Presentation
      奈良女子大学(奈良県奈良市)
    • Year and Date
      2015-09-21
    • Related Report
      2015 Research-status Report
  • [Presentation] 直線型二配位構造を有する有機鉄錯体の合成と物性2015

    • Author(s)
      松尾 司・合田 舜・伊藤幹直・橋爪大輔・玉尾皓平・岡澤 厚・小島憲道・小林義男・笛野博之・田中一義
    • Organizer
      第62回有機金属化学討論会
    • Place of Presentation
      関西大学千里山キャンパス(大阪府吹田市)
    • Year and Date
      2015-09-07
    • Related Report
      2015 Research-status Report
  • [Remarks] 小島研究室ホームページ

    • URL

      http://park.itc.u-tokyo.ac.jp/kojimalab/index.html

    • Related Report
      2015 Research-status Report
  • [Funded Workshop] The International Chemical Congress of Pacific Basin Societies 2015 (Pacifichem2015)2015

    • Place of Presentation
      Honolulu (USA)
    • Year and Date
      2015-12-15
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2018-03-22  

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