Electrical Characterization of Single-walled Carbon Nanotubes Fabricated from Carbon Nanoring/Linear Molecule Complexes.

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K15031
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Shizuoka Institute of Science and Technology
• Principal Investigator: Tojo Tomohiro 静岡理工科大学, 理工学部, 講師 (30736385)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: カーボンナノチューブ / 螺旋度 / 環状分子 / シリコン基板

Outline of Final Research Achievements

A direct-growth synthesis of single-walled carbon nanotubes (SWNTs) with a metallic or semiconducting feature was accomplished utilizing cycloparaphenylenes (CPPs) which are the fundamental unit of SWNTs. CPPs were introduced into linear chain molecules which were modified on a Si substrate, pyrolyzing, transforming to tubular structures. The linear chain molecules such as an ethylene glycol (EG), silane coupling agent, and phosphonic acid derivative affected the obtained tubular structures owing to its difference in a membrane density on a surface of the substrate and/or an electrostatic force to CPPs. Therefore, it suggests that a suitable linear chain molecule facilitates growth of SWNTs with a specific chirality.

Free Research Field

電気・電子材料，エネルギー変換

Academic Significance and Societal Importance of the Research Achievements

分子杭と分子輪に金属元素を含まず，また界面活性剤を使用せずに，円筒状構造を得ることに成功し，また特定の螺旋度を有するSWNTの合成を達成できる可能性が見いだされたため，今後，SWNTの螺旋度特有の潜在的な基礎物性の実験的解明につながる点で学術的意義がある。SWNTの基礎物性の解明により，シリコンに代わる太陽電池電極への応用展開も期待できる点で社会的意義がある。