Creation of one-dimensional transition metal dichalcogenide nanotubes by synthesis and purification and elucidation of their physical properties

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15392
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Yomogida Yohei 東京都立大学, 理学研究科, 助教 (90647158)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: ナノチューブ

Outline of Final Research Achievements

In this study, we developed a synthesis technique for transition metal dichalcogenide nanotubes (TMDC-NTs), which are cylindrical layered materials, and combined it with structure control technique to create one-dimensional TMDC-NTs with a uniform structure and various compositions, which have not yet been realized, and elucidated their physical properties. Specifically, (1) development of synthesis method for small diameter (1D) TMDC-NTs using liquid-phase synthesis precursors, (2) realization of 1D TMDC-NTs of various compositions, (3) improvement of the quality of 1D TMDC-NTs synthesized from the liquid-phase synthesis precursors, and (4) development of the Further 1D TMDC-NTs (diameter reduction) by synthesis and structure control, and (5) Realization of transistor and hetero applications of 1D TMDC-NTs.

Free Research Field

ナノ構造科学

Academic Significance and Societal Importance of the Research Achievements

本研究では、層状物質を筒状に巻いた遷移金属ダイカルコゲナイドナノチューブ（TMDC-NT）の合成技術を開発し、構造制御技術と組み合わせることで、未だ実現されていない均一な構造かつ様々な組成の１次元TMDC-NTを創製し、その物性を解明した。本成果は、従来の大量合成試料に比べて大幅な直径低減（１次元化）を可能にし、組成の自由度を活かした研究展開を可能にする成果である。また、物性開拓・デバイス性能向上に重要な均一性を確保する上で重要な成果である。今後、本研究を基盤としたさらなるTMDC-NT一次元化の研究、1次元TMDC-NTを用いた新奇物性開拓・デバイス応用の進展が期待される。