Crystallography based on "crystal structure transformation induced by topological defects"

• Project/Area Number: 20K20448
• Project/Area Number (Other): 19H05529 (2019)
• Research Category: Grant-in-Aid for Challenging Research (Pioneering)
• Allocation Type: Multi-year Fund (2020); Single-year Grants (2019)
• Review Section: Medium-sized Section 34:Inorganic/coordination chemistry, analytical chemistry, and related fields
• Research Institution: The University of Tokyo
• Principal Investigator: Aida Takuzo 東京大学, 大学院工学系研究科(工学部), 教授 (00167769)
• Project Period (FY): 2019-06-28 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000); Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2020: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000); Fiscal Year 2019: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
• Keywords: 結晶成長 / 欠陥 / らせん転位 / トポロジカル欠陥 / 配位高分子 / 結晶 / 構造転位

Outline of Research at the Start

結晶化を含む「階層的な自己集合体形成」に関する数多くの研究を行い、様々な機能材料の開拓に成功してきた。最近その過程で「Screw Dislocationが提供するトポロジカル欠陥」が「結晶の核形成と成長」を促すことを直接示す現象を発見した。本研究課題ではこの現象の理解と深化を行い「結晶学における新学理」を構築する。

Outline of Final Research Achievements

The stepwise crystallization discovered by the Principal Investigators through this study is the first example of a direct link between the topological defects provided by Screw Dislocation and the crystal nucleation/growth process. The observations that (1) 2D crystallization (kinetic dominance) precedes 3D crystallization (thermodynamic dominance) and (2) 3D crystal nucleation and growth occur from the center of the 2D crystal in a manner that consumes the 2D crystal have enabled many experiments and verifications that were previously impossible.

Academic Significance and Societal Importance of the Research Achievements

「Nucleation & Growth」はあらゆる組織化の基本的な考え方である。機器分析の発展により最近では、結晶成長過程の可視化に加え、結晶核形成の観測が試みられはじめている。結晶核形成はこれまで、理論上の仮説に過ぎなかったプロセスである。結晶核形成には高いエネルギーを有する不飽和なサイトが必須であり、多くの結晶系で観測されているScrew Dislocationがそのような高エネルギー不飽和サイトを担っているのではないかと考えられてきた。なぜならScrew Dislocationの中心部がトポロジカル欠陥として機能し得るからである。申請者は本研究を通じてその仮説を初めて実証した。

Research Products

• [Journal Article] Anomalous Chiral Transfer: Supramolecular Polymerization in a Chiral Medium of a Mesogenic Molecule (2022)
  • Author(s): Zhang Xu‐Jie、Morishita Daiki、Aoki Tsubasa、Itoh Yoshimitsu、Yano Keiichi、Araoka Fumito、Aida Takuzo
  • Journal Title: Chemistry An Asian Journal Volume: － Issue: 10
  • DOI: 10.1002/asia.202200223
  • Peer Reviewed
• [Journal Article] Ultrafast water permeation through nanochannels with a densely fluorous interior surface. (2022)
  • Author(s): Itoh Y, Chen S, Hirahara R, Konda T, Aoki T, Ueda T, Shimada I, Cannon JJ, Shao C, Shiomi J, Tabata KV, Noji H, Sato K, Aida T.
  • Journal Title: Science Volume: 376 Issue: 6594 Pages: 738-743
  • DOI: 10.1126/science.abd0966
  • Peer Reviewed
• [Journal Article] Reconstitution of Microtubule into GTP-Responsive Nanocapsules (2022)
  • Author(s): Noriyuki Uchida, Ai Kohata, Kou Okuro, Annalisa Cardellini, Chiara Lionello, Eric A. Zizzi, Marco A. Deriu, Giovanni M. Pavan, Michio Tomishige, Takaaki Hikima, and Takuzo Aida
  • Journal Title: Nat. Commun. Volume: 13 Issue: 1 Pages: 5424-5424
  • DOI: 10.1038/s41467-022-33156-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Blending to Make Nonhealable Polymers Healable: Nanophase Separation Observed by CP/MAS 13C NMR Analysis (2022)
  • Author(s): Yuta Fujisawa, Yiling Nan, Atsushi Asano, Yu Yanagisawa, Keiichi Yano, Yoshimitsu Itoh, Takuzo Aida
  • Journal Title: Angewandte Chemie International Edition Volume: 62 Issue: 5
  • DOI: 10.1002/anie.202214444
  • Peer Reviewed
• [Journal Article] Accumulated Lattice Strain as an Internal Trigger for Spontaneous Pathway Selection (2021)
  • Author(s): Huang Hubiao、Sato Hiroshi、Pirillo Jenny、Hijikata Yuh、Zhao Yong Sheng、Cheng Stephen Z. D.、Aida Takuzo
  • Journal Title: Journal of the American Chemical Society Volume: 143 Issue: 37 Pages: 15319-15325
  • DOI: 10.1021/jacs.1c06854
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Supramolecular Polymerization: Its Significance and Applications (2022)
  • Author(s): Takuzo AIDA
  • Organizer: MaxBergmann Symposium
  • Int'l Joint Research / Invited
• [Presentation] Supramolecular Polymerization: Its Significance and Applications (2022)
  • Author(s): Takuzo AIDA
  • Organizer: ORCHEM 2022
  • Int'l Joint Research / Invited
• [Presentation] Supramolecular Polymerization: Its Significance and Applications (2022)
  • Author(s): Takuzo AIDA
  • Organizer: Third Middle-Eastern Materials Science Conference
  • Int'l Joint Research / Invited
• [Presentation] Supramolecular Polymerization: Its Significance and Applications (2022)
  • Author(s): Takuzo AIDA
  • Organizer: PPC-17
  • Int'l Joint Research / Invited
• [Presentation] Supramolecular Polymerization: Its Significance and Applications (2022)
  • Author(s): Takuzo AIDA
  • Organizer: Third Bowei Reserach Conference
  • Int'l Joint Research / Invited
• [Presentation] Supramolecular Polymerization in Non-Fluidic Media (2019)
  • Author(s): Takuzo Aida
  • Organizer: Gordon Research Conference: Self-Assembly and Supramolecular Chemistr