伊藤 肇

いとう はじめ
Hajime Ito
北海道大学大学院工学研究院
教授
計画　A02代表
A02-01 研究代表者
専門分野有機化学・錯体化学

ドミノ型相転移ソフトクリスタルの機構解明と新機能創成

キーワード
ドミノ型相転移、ソフトクリスタル、金錯体、結晶ジャンプ
関連する研究者
研究分担者: 石山竜生（北海道大学大学院工学研究院、准教授）
研究分担者: 関朋宏（静岡大学理学部、講師）
研究協力者: 久保田浩司（北海道大学大学院工学研究院、准教授）
研究協力者: 陳旻究（北海道大学化学反応創成研究拠点 (WPI-ICReDD)、特任助教）

研究概要

分子ドミノ型相転移化合物は、結晶に与えたわずかな機械的刺激が分子に伝わることで相転移がスタートし、それが自己複製的なメカニズムで増幅され、自発的に結晶全体に広がることで、結晶のバルクの性質を大きく変化させるという特徴がある。本研究代表者は、「分子ドミノ型相転移」や「外部刺激によりジャンプする結晶」のバリエーションを数多く開発し、それらの性質を詳細に分析することで、現象の基礎原理解明と、一般化の達成と材料デザイン手法の開発を目指す。具体的な研究内容は（１）ドミノ型相転移が進行する結晶の分子バリエーション作成と現象解明（２）ドミノ型相転移を利用したナノ構造を内包した結晶性材料の作成と機能開発（３）光誘起結晶相転移と瞬間的な機械力発生機構の解明と機能化である。分子ドミノ型相転移化合物のもつ「マクロの刺激が分子に伝わる」あるいは「分子のミクロな構造変化が結晶のマクロな性質を左右する」という特徴は、これまでは研究対象にできなかった「マクロとミクロの直接相関」に重要ないとぐちを与える。

ドミノ型結晶相転移の分子モデル
微小な刺激により結晶の発光色が変わり（青から黄色）全体に広がる様子

代表的な研究業績

  • Mechano-Responsive Luminescence via Crystal-to-Crystal Phase Transitions between Chiral and Non-Chiral Space Groups
    Jin, M.; Seki, T.; Ito, H. J. Am. Chem. Soc. 2017, 139, 7452–7455.
    DOI: 10.1021/jacs.7b04073
  • Luminescent Mechanochromic 9-Anthryl Gold(I) Isocyanide Complex with an Emission Maximum at 900 nm after Mechanical Stimulation
    Seki, T.; Tokodai, N.; Omagari, S.; Nakanishi, T. ; Hasegawa, Y.; Iwasa, T.; Taketsugu, T.; Ito, H. J. Am. Chem. Soc.  2017, 139, 6514–6517.
    DOI: 10.1021/jacs.7b00587
  • A Screening Approach for the Discovery of Mechanochromic Gold(I) Isocyanide Complexes with Crystal-to-Crystal Phase Transitions
    Seki, T.; Takamatsu, Y; Ito, H. J. Am. Chem. Soc.  2016, 138, 6252–6260.
    DOI: 10.1021/jacs.6b02409
  • Controlling Mechano- and Seeding-Triggered Single-Crystal-to-Single-Crystal Phase Transition: Molecular Domino with a Disconnection of Aurophilic Bonds
    Seki, T.; Sakurada, K.; Ito, H. Angew. Chem., Int. Ed.  2013, 52, 12828–12832. (VIP paper)
    DOI: 10.1002/anie.201307672
  • Mechanical stimulation and solid seeding trigger single-crystal-to-single-crystal molecular domino transformations
    Ito, H.; Muromoto, M.; Kurenuma, S.; Ishizaka, S.; Kitamura, N.; Sato, H.; Seki, T. Nature Commun.  2013, 4, Article number: 2009.
    DOI: 10.1038/ncomms3009

研究業績

種別

査読付発表論文

  1. "Solid-State C-N Cross-Coupling Reactions with Carbazoles as Nitrogen Nucleophiles Using Mechanochemistry" K. Kubota*, T. Endo, M. Uesugi, Y. Hayashi, H. Ito*, Chemsuschem 15, e202102132 (2022).
    DOI: 10.1002/cssc.202102132
  2. "Efficient access to materials-oriented aromatic alkynes via the mechanochemical Sonogashira coupling of solid aryl halides with large polycyclic conjugated systems" Y. Gao, C. Feng, T. Seo, K. Kubota*, H. Ito*, Chem. Sci. 13, 430-438 (2022).
    DOI: 10.1039/D1SC05257H
  3. "Insight into the Reactivity Profile of Solid-State Aryl Bromides in Suzuki-Miyaura Cross-Coupling Reactions Using Ball Milling" K. Kubota*, K. Kondo, T. Seo, H. Ito*, Synlett, 33, 898-902 (2022).
    DOI: 10.1055/a-1748-3797
  4. "Synthesis of hydrosilylboronates via the monoborylation of a dihydrosilane Si-H bond and their application for the generation of dialkylhydrosilyl anions" T. Takeuchi, R. Shishido, K. Kubota*, H. Ito*, Chem. Sci. 12, 11799-11804 (2021).
    DOI: 10.1039/D1SC01440D
  5. "Charge-transfer crystal with segregated packing structure constructed with hexaarylbenzene and tetracyanoquinodimethane" R. Ando, M. Jin*, H. Ito*, Crystengcomm 23, 5564-5568 (2021).
    DOI: 10.1039/D1CE00726B
  6. "Regio- and Stereoselective Synthesis of Multi-Alkylated Allylic Boronates through Three-Component Coupling Reactions between Allenes, Alkyl Halides, and a Diboron Reagent" Y. Ozawa, K. Endo, H. Ito*, J. Am. Chem. Soc. 143, 13865-13877 (2021).
    DOI: 10.1021/jacs.1c06538
  7. "Mechanochemical synthesis of magnesium-based carbon nucleophiles in air and their use in organic synthesis" R. Takahashi, A. Q. Hu, P. Gao, Y. P. Gao, Y. D. Pang, T. Seo, J. L. Jiang, S. Maeda, H. Takaya, K. Kubota*, H. Ito*, Nat. Commun. 12, (2021).
    DOI: 10.1038/s41467-021-26962-w
  8. "Backbone-Modified C-2-Symmetrical Chiral Bisphosphine TMSQuinoxP*: Asymmetric Borylation of Racemic Allyl Electrophiles" H. Iwamoto, Y. Ozawa, Y. Takenouchi, T. Imamoto, H. Ito*, J. Am. Chem. Soc. 143, 6413-6422 (2021).
    DOI: 10.1021/jacs.0c08899
  9. "Synthesis of Chiral alpha-Amino Tertiary Boronates via the Catalytic Enantioselective Nucleophilic Borylation of Dialkyl Ketimines" K. Kubota*, D. Miura, T. Takeuchi, S. Osaki, H. Ito*, ACS Catal. 11, 6733-6740 (2021).
    DOI: 10.1021/acscatal.1c01689
  10. "Introduction of a Luminophore into Generic Polymers via Mechanoradical Coupling with a Prefluorescent Reagent" K. Kubota*, N. Toyoshima, D. Miura, J. L. Jiang, S. Maeda, M. Jin*, H. Ito*, Angew. Chem. Int. Ed. 60, 16003-16008 (2021).
    DOI: 10.1002/anie.202105381
  11. "Palladium-Catalyzed Solid-State Polyfluoroarylation of Aryl Halides Using Mechanochemistry" R. Takahashi, T. Seo, K. Kubota*, H. Ito*, ACS Catal. 11, 14803-14810 (2021).
    DOI: 10.1021/jacs.1c00906
  12. "Distinct Fold-Mode Formation of Crystalline Cu(I) Helical Coordination Polymers with Alternation of the Solid-State Emission Using Shape of the Counter Anions" M. Jin*, R. Ando, H. Ito*, Inorg. Chem., 61, 3-9 (2022).
    DOI: 10.1021/acs.inorgchem.1c02725
  13. "A Copper(I)-Catalyzed Radical-Relay Reaction Enabling the Intermolecular 1,2-Alkylborylation of Unactivated Olefins" S. Akiyama, N. Oyama, T. Endo, K. Kubota*, H. Ito*, J. Am. Chem. Soc. 143, 5260-5268 (2021).
    DOI: 10.1021/ja076634o
  14. "(9-Isocyanoanthracene)gold(I) Complexes Exhibiting Two Modes of Crystal Jumps by Different Structure Change Mechanisms" K. Kato, T. Seki*, H. Ito, Inorg. Chem. 60, 10849-10856 (2021).
    DOI: 10.1021/acs.inorgchem.1c00881
  15. "Tackling Solubility Issues in Organic Synthesis: Solid-State Cross-Coupling of Insoluble Aryl Halides" T. Seo, N. Toyoshima, K. Kubota*, H. Ito*, J. Am. Chem. Soc. 143, 6165-6175 (2021).
    DOI: 10.1021/jacs.1c00906
  16. "Encapsulating N-Heterocyclic Carbene Binuclear Transition-Metal Complexes as a New Platform for Molecular Rotation in Crystalline Solid-State" M. Jin,* R. Ando, M. J. Jellen, M. A. Garcia-Garibay, H. Ito.* J. Am. Chem. Soc. 143, 1144-1153 (2021).
    DOI: 10.1038/s42004-021-00458-6
  17. "General Synthesis of Trialkyl- and Dilylative Dearomatization of Indoles and Pyrroles using Silylboronates" K. Hayama, R. Takahashi, K. Kubota,* H. Ito.* Chem. Lett. 50, 289-292 (2021).
    DOI: 10.1021/jacs.0c03011
  18. "General Synthesis of Trialkyl- and Dialkylarylsilylboranes: Versatile Silicon Nucleophiles in Organic Synthesis" R. Shishido, M. Uesugi, R. Takahashi, T. Mita, T. Ishiyama, K. Kubota,* H. Ito.* J. Am. Chem. Soc. 142, 14125-14133 (2020) (ACIE Cover) . (ACIE Cover)
    DOI: 10.1021/jacs.0c03011
  19. "Selective Mechanochemical Monoarylation of Unbiased Dibromoarenes by in Situ Crystallization" T. Seo, K. Kubota,* H. Ito.* J. Am. Chem. Soc. 142, 9884-9889 (2020). (JACS spotlight, JACS Cover))
    DOI: 10.1021/jacs.0c01739
  20. "Photoluminescent Ferroelastic Molecular Crystals" T. Seki,* C. Feng, K. Kashiyama, S. Sakamoto, Y. Takasaki, T. Sasaki, S. Takamizawa, H. Ito.* Angew. Chem. Int. Ed. 59, 8839-8843 (2020). (領域内共同研究　A01-02 高見澤) (ACIE Cover)
    DOI: 10.1002/anie.201914610
  21. "Solid-State Radical C-H Trifluoromethylation Reactions Using Ball Milling and Piezoelectric Materials" Y. Pang, J. W. Lee, K. Kubota,* H. Ito.* Angew. Chem. Int. Ed. 59, 22570-22576 (2020).
    DOI: 10.1002/anie.202009844
  22. "A Glove-Box- and Schlenk-Line-Free Protocol for Solid-State C-N Cross-Coupling Reactions Using Mechanochemistry" K. Kubota,* R. Takahashi, M. Uesugi, H. Ito.* ACS Sustainable Chem. Eng. 8, 16577-16582 (2020). (Cover)
    DOI: 10.1021/acssuschemeng.0c05834
  23. "Mechanochemical cross-coupling reactions" K. Kubota.* H. Ito* Trends Chem. 2, 1066-1081 (2020). (Cover)
    DOI: 10.1016/j.trechm.2020.09.006
  24. "Silyl-group-directed Linear-selective Allylation of Carbonyl Compounds with Trisubstituted Allylboronates Using a Copper(I) Catalyst" H. Iwamoto, Y. Hayashi, Y. Ozawa, *H. Ito, ACS Catal. 10, 2471-2476 (2020).
    DOI: 10.1021/acscatal.9b05408
  25. "Synthesis of Chiral N-Heterocyclic Allylboronates via the Enantioselective Borylative Dearomatization of Pyrroles" K. Hayama, R. Kojima, *K. Kubota, *H. Ito, Org. Lett. 22, 739-744 (2020).
    DOI: 10.1021/acs.orglett.9b04581
  26. "Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates" J. Taguchi, S. Matsuura T. Seki, *H. Ito, Chem. Eur. J. 26,2450-2455 (2020).
    DOI: 10.1002/chem.201904983.
  27. "Crystal Jumping of Simple Hydrocarbons: Cooling-Induced Salient Effect of Bis-, Tri-, and Tetraphenylethene through Anisotropic Lattice Dimension Changes without Thermal Phase Transitions" *T. Seki, T. Mashimo, *H. Ito, Chem. Lett. 49,174-177(2020).
    DOI: 10.1246/cl.190768
  28. "Aurophilicity-mediated Construction of Emissive Porous Molecular Crystals as Versatile Hosts for Liquid and Solid Guests" *T. Seki, K. Ida, S. Aono, S. Sasaki, *H. Ito, Chem. Eur. J. 25, 1-11 (2019). (領域内共同研究　A01 公募班 榊)
    DOI: 10.1002/chem.201904597
  29. "Air- and moisture-stable Xantphos-ligated palladium dialkyl complex as a precatalyst for cross-coupling reactions" R. Takahashi, *K. Kubota, *H. Ito, Chem. Commun., 56, 407-410 (2020).
    DOI: 10.1039/C9CC06946A
  30. "Redox Reactions of Small Organic Molecules Using Ball Milling and Piezoelectric Materials" *K. Kubota, Y. Pang, A. Miura, *H. Ito, Science 366, 1500-1504 (2019).
    DOI: 10.1126/science.aay8224
  31. "Anisotropic Thermal Expansion as the Source of Macroscopic and Molecular Scale Motion in Phosphorescent Amphidynamic Crystals" M. Jin, S. Yamamoto, T. Seki, *H. Ito, *M. A. Garcia-Garibay, Angew. Chem. Int. Ed. 58, 18003-18010 (2019).
    DOI: 10.1039/C9CC06946A
  32. "The Direct Dimesitylborylation of Benzofuran Derivatives via an Iridium-Catalyzed C–H Activation with Silyldimesitylborane" R. Shishido, T. Seki, T. Ishiyama, , *H. Ito, Chem. Eur. J. 25, 12924-12928 (2019).
    DOI: 10.1002/chem.201903776
  33. "Solid-State Suzuki-Miyaura Cross-Coupling Reactions: Olefin-Accelerated C–C Coupling Using Mechanochemistryeo" T. Seo, T. Ishiyama, *K. Kubota, *H. Ito, Chem. Sci., 10, 8202-8210 (2019).
    DOI: 10.1039/C9SC02185J
  34. "Catalytic Enantioselective Synthesis of Allylic Boronates with a Trisubstituted Alkenyl Fluoride and Conversion to Compounds with a F-Substituted Stereogenic Quaternary Center" S. Akiyama, K. Kubota, M. S. Mikus, P. H. S. Paioti, F. Romiti, Q. Liu, Y. Zhou, *A. H. Hoveyda, *H. Ito, Angew. Chem. Int. Ed., 58, 11998-12003 (2019).
    DOI: 10.1002/anie.201906283
  35. "Copper(I)-Catalyzed Enantioconvergent Borylation of Racemic Benzyl Chlorides Enabled by Quadrant-by-Quadrant Structure Modulation of Chiral Bisphosphine Ligands" H. Iwamoto, K. Endo, Y. Ozawa, Y. Watanabe, K. Kubota, T. Imamoto, *H. Ito, Angew. Chem. Int. Ed., 58, 11112-11117 (2019).
    DOI: 10.1002/anie.201906011
  36. "Synthesis of 2-alkyl-2-boryl-substituted-tetrahydrofurans via copper(I)-catalysed borylative cyclization of aliphatic ketones" K. Kubota, M. Uesugi, S. Osaki, *H. Ito, Org. Biomol. Chem., 17, 5680-5683 (2019).
    DOI: 10.1039/C9OB00962K
  37. "Mechanochemistry allows carrying out sensitive organometallic reactions in air: glove-box-and-Schlenk-line-free synthesis of oxidative addition complexes from aryl halides and palladium(0) " *K. Kubota, R. Takahashi, *H. Ito, Chem. Sci., 10, 5837-5842 (2019).
    DOI: 10.1039/C9SC01711A
  38. "Luminescent mechanochromism of gold N-heterocyclic carbene complexes with hypso- and bathochromic spectral shifts" *T. Seki, K. Kashiyama, *H. Ito, Dalton Trans., 48, 7105-7109 (2019).
    DOI: 10.1039/C9DT00566H
  39. "Anisotropic strain release in a thermosalient crystal: correlation between the microscopic orientation of molecular rearrangements and the macroscopic mechanical motion" *T. Seki, T. Mashimo, *H. Ito, Chem. Sci., 10, 4185-4191 (2019).
    DOI: 10.1039/C8SC05563G
  40. "Concise Synthesis of Potassium Acyltrifluoroborates from Aldehydes through Copper(I)-Catalyzed Borylation/Oxidation" J. Taguchi, T. Takeuchi, R. Takahashi, F. Masero, *H. Ito, Angew. Chem. Int. Ed., 58, 7299-7303 (2019).
    DOI: 10.1002/anie.201901748
  41. "Iridium(I)-Catalyzed C-H Borylation in Air Using Mechanochemistry" Y. Pang, T. Ishiyama, K. Kubota, *H. Ito, Chem. Eur. J., 25, 4654-4659 (2019).
    DOI: 10.1002/chem.201900685
  42. "Olefin-accelerated Solid-state C–N cross-coupling reactions using mechanochemistry" K. Kubota, T. Seo, K. Koide, Y. Hasegawa, *H. Ito, Nature Commun., 10, 111 (2019). (プレスリリース、領域内共同研究　A03公募 長谷川靖)
    DOI: 10.1038/s41467-018-08017-9
  43. "A Gold Isocyanide Complex with a Pendant Carboxy Group: Orthogonal Molecular Arrangements and Hypsochromically Shifted Luminescent Mechanochromism" T. Seki, K. Kobatashi, T. Mashimo, *H. Ito, Chem. Commun., 54, 11136-11139 (2018).
    DOI: 10.1039/C8CC06490C
  44. "A meta-diisocyanide benzene-based aryl gold isocyanide complex exhibiting multiple solid-state molecular arrangements and luminescent mechanochromism" T. Seki, K. Ida, *H. Ito, Mater. Chem. Front., 2, 1195-1200 (2018).
    DOI: 10.1039/C8QM00074C
  45. "Mechanical-Stimulation-Triggered and Solvent-Vapor-Induced Reverse Single-Crystal-to-Single-Crystal Phase Transitions with Alterations of the Luminescence Color" J. Mingoo, T. Sumitani, H. Sato, T. Seki, *H. Ito, J. Am. Chem. Soc., 140, 2875-2879 (2018).
    DOI: 10.1021/jacs.7b12455
  46. "Phosphorescence Control Mediated by Molecular Rotation and Aurophilic Interactions in Amphidynamic Crystals of 1,4-Bis[tri-(p-fluorophenyl)phosphane-gold(I)-ethynyl]benzene" M. Jin, S. Chung, T. Seki, *H. Ito, *M. A. Garcia-Garibay, J. Am. Chem. Soc., 139, 18115-18121( 2017).
    DOI: 10.1021/jacs.7b11316
  47. "Synthesis of Acylborons by Ozonolysis of Alkenylboronates: Preparation of an Enantioenriched Amino Acid Acylboronate" J. Taguchi, T. Ikeda, R. Takahashi, I. Sasaki, Y. Ogasawara, T. Dairi, N. Kato, Y. Yamamoto, *J. W. Bode, *H. Ito, Angew. Chem. Int. Ed., 56, 13847–13851 (2017).
    DOI: 10.1002/anie.201707933

国内学会発表

  1. ”発光性金(I)錯体の力学応答特性” 伊藤 肇 (招待講演), 第36回181委員会（オンライン開催, 6. 2-3. 2021）
  2. ” Mechanochemistry for Molecular Synthesis”久保田 浩司 (招待講演), Kanazawa University Sakigake Project 2020 Seminar (オンライン開催, 7. 13)
  3. ”メカノケミカル固体有機合成：進展と展望” 久保田 浩司 (招待講演), 第三回有機化学学生ウェビナー（オンライン開催, 8. 29. 2021）
  4. ” Designing macro- and micro-scale motions via crystalline molecular rotors of metal complexes​​” M. Jin（招待講演）, 錯体化学会第71回討論会（オンライン開催, 9. 16-19）
  5. ”物理的な力を駆動力とする有機合成反応の開発”久保田 浩司（招待講演）第七回北海道大学部局横断シンポジウム (オンライン開催, 10. 1. 2021)
  6. ”結晶中の分子回転デザインと固体発光機能”陳 旻究（招待講演）若手研究者のための有機化学札幌セミナー（オンライン開催, 11.17,2021）
  7. ”固体メカノケミストリー -有機合成の刷新を目指して-“ 久保田 浩司（招待講演）日本プロセス化学会2021 ウィンターシンポジウム（オンライン開催, 11. 26. 2021）
  8. 「NHC 金属錯体を基盤とした新規な結晶性分子ローターの設計とその光物性」陳 旻究（招待講演）2020 複合系光化学ライジングスター研究会（オンライン、2020.11.7）
  9. 「メカノケミストリーで切り拓く未踏ケミカルスペース」久保田 浩司（招待講演）京都大学第五回若手ワークショップ（オンライン、2020.11.12）
  10. 「メカノケミカル有機合成の夜明け」伊藤肇（招待講演）MRMforum2020 TS-5 動的分子アーキテクトニクス（オンライン、2020.12.8）
  11. 「シリルボランの新しい合成法と有機ケイ素求核反応への応用」伊藤肇（招待講演）第47回有機典型元素化学討論会 特別講演会（オンライン、2020.12.5）
  12. 「シリルホウ素化合物の新しい合成法と幅広いケイ素求核剤の発生」伊藤肇（招待講演）ケイ素化学協会　オンライン講演会（オンライン、2020.1.29）

報道・アウトリーチ活動・特許・その他

  1. P2019-012 特許出願 WO PCT/JP2020/033650　世界知的所有権機関　2020/9/4 圧電材料を利用するメカノレドックス反応及びその反応を用いる製造方法　国立大学法人北海道大学
  2. P2020-057　特許出願 JP 2020-183044　日本　2020/10/30　クロスカップリング反応及びその反応を用いる製造方法　国立大学法人北海道大学
  3. 発光特性をもつ強弾性有機金属錯体結晶を初めて報告した（A01-02高見澤と共同研究）Angew.Chem. Int. Ed. 2020, 59, 8839に掲載。
  4. メカノケミストリー条件下のクロスカップリングにおいて、反応中間体の結晶化を利用した選択的モノアリール化の開発に成功した。J. Am. Chem. Soc. 2020, 142, 9884に掲載
  5. 金属NHC錯体を活用した、アンフフィダイナミック結晶の作成に成功した（Garcia-Garibay, UCLAとの共同研究）J. Am. Chem. Soc. 2021, 143, 1144に掲載

国際学会発表

  1. ” Designing molecular rotation and luminescent properties in solid-state by utilizing crystalline N-heterocyclic carbene metal complexes”M. jin（Invited）. 4th International Caparica Christmas Conference on Translational Chemistry 2021（Online, 11.7-8. 2021）
  2. ”Tackling Solubulity Issues in Organic Synthesis” K. Kubota（Invited), Joint Symposium of Engineering Information Science WPI-ICReDD in Hokkaido University（Online, April, 26, 2021）
  3. "Ball-Mill Organic Synthesis: Mechanoredox and Solid State Cross-Coupling", H. Ito (Invited), Department Webmnar, Indian Institute of Science Education and Research, Kolkata (IISER) (Online, Sep. 30, 2020)
  4. "Experimental Reaction Developments with Power of Computation" Hajime Ito (Invited), 3rd ICReDD International Symposium (Online, Feb. 22-24, 2021)
  5. "Mechanical Response of Gold(I) Complexes" H. Ito (Invited), The 6.5th Crystal Engineering and Emerging Materials Workshop of Ontario and Quebec（Online, May 30-31, 2020）
  6. "Molecular Correlated Rotation in Solid State via Stadium Shaped Hexa-arylbenzene" M. Jin, Cooperative phenomena in framework materials: Faraday Discussion (Online, Oct.13-16, 2020)
  7. "Redox reactions of small organic molecules using ball milling and piezoelectric catalysis" K. Kubota, Cooperative phenomena in framework materials: Faraday Discussion (Online, Oct.13-16, 2020)
  8. "Solid-state cross-coupling as a new tool for organic chemistry" H. Ito (Invited), Mechanochemistry Virtual Symposium #1 (Online, Jan 14, 2021)
  9. "Synthesis of Novel Silylboranes: Versatile Silicon-based Nucleophiles in Organic Synthesis" K. Kubota (Invited), Zoom Main Group Symposium: From Molecules and Materials (Online, Aug.27-28, 2020)
  10. "Aryl gold isocyanide complexes with mechanical responsive properties" H. Ito (Invited), 2017 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2017) (Gwangju, Korea, Aug. 30-Sep. 2, 2017)
  11. "Concise Synthesis of Acylboronates by Ozonolysis of Alkenylboronates" T. Ikeda, I. Sasaki, J. W. Bode, H. Ito, 16th International Meeting on Boron Chemistry (Hong Kong, China, Jul. 9-13, 2017)
  12. "Copper-Catalyzed Asymmetric Borylative Dearomatization: New Pathway to Optically Active Heterocyclic Compounds" H. Ito (Invited), 16th International Meeting on Boron Chemistry (Hong Kong, China, Jul. 9-13, 2017)
  13. "Copper-Catalyzed Borylation with Diboron: The Beginning and Our Recent Results" H. Ito (Invited), BK21+/Basic Science Research Institute (POSTECH) Mini-Symposium, Frontiers in Organic and Organometallic Chemistry (Pohang, Korea, Jun. 30-30, 2017)
  14. "Copper(I)-Catalyzed Selective Defluorination: Selective Synthesis of Stereodefined β-Monofluoroalkenes" K. Kubota, H. Ito, 20th European Symposium on Organic Chemistry (Cologne, Germany, Jul. 2-6, 2017)
  15. "Gold Isocyanide Complexes with Mechanical Response" H. Ito (Invited), 24th Congress and General Assembly of the International Union of Crystallography (IUCr 2017) (Hyderabad, India, Aug. 20-29, 2017)
  16. "Low-temperature-selective luminescent mechanochromism of a gold(I) isocyanide complex" T. Seki, H. Ito, 2017 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2017) (Gwangju, Korea, Aug. 30-Sep. 2, 2017)
  17. "Mechano-responsive luminescence of gold(I) isocyanide complex via crystal-to-crystal phase transition between chiral and non-chiral space groups" T. Seki, H. Ito, 2017 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2017) (Gwangju, Korea, Aug. 30-Sep. 2, 2017)
  18. "Molecular Design of Gold(I) Isocyanide Complexes with Luminescent Mechanochromism and Phase Transitions" H. Ito (Invited), 3rd International Conference on Mechanoluminescence (Hong Kong, China, Dec. 15-17, 2017)
  19. "Molecular Design of Luminescent Gold(I) Isocyanide Complexes with Mechanical Response Properties" H. Ito (Invited), The 7th Sino-Japanese Symposium on Organic Chemistry for Young Scientists (Shanghai, China, Oct.8-11, 2017)

受賞

  1. 受賞タイトル：刺激応答クロミック材料の開発を志向した発光性金錯体の研究　文部科学省　科学技術分野の文部科学大臣表彰　若手科学者賞　受賞者：関 朋宏
  2. 受賞タイトル：銅(I)触媒による官能基化有機ホウ素化合物の合成　公益財団法人 井上科学振興財団　井上研究奨励賞　受賞者：久保田 浩司
  3. 受賞タイトル：第30回万有札幌シンポジウム　ベストディスカッション賞　受賞者：秋山 颯太
  4. 受賞タイトル：第65回有機金属化学討論会　ポスター賞　受賞者：林 優太
  5. 受賞タイトル：第8回CSJ化学フェスタ2018　ポスター賞　受賞者：林 優太
  6. 受賞タイトル：錯体化学会 第68回討論会　学生講演賞　受賞者：山元 爽
  7. 受賞タイトル：2Fa-01 Mechano-Rseponsive Luminescence of Gold(I)-Isocyanide Complex Based on Crystal-to- Crystal Phase Transition between Chiral and Non-Chiral Space Groups, 錯体化学会第67回討論会　学生講演賞　受賞者：Mingoo Jin
  8. 受賞タイトル：1D03 Phosphorescence Control via Molecular Rotation in Solid Phase, 2017年光化学討論会　優秀学生発表賞（口頭）　受賞者：Mingoo Jin
関連ウェブサイト
連絡先
hajito [at] eng.hokudai.ac.jp