Chirality control synthesis of carbon nanotubes from carbon nanorings and evaluation of their electric features

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13947
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Tojo Tomohiro 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (30736385)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 単層カーボンナノチューブ / シクロパラフェニレン / 熱融合

Outline of Final Research Achievements

Our synthesis approach of single-walled carbon nanotubes (SWNTs) relied on utilizing cycloparaphenylenes (CPPs) which are the fundamental unit of SWNTs in order to separate metallic and semiconducting tubes before the synthesis. As obtaining tubular structures from CPPs, fullerene guests were introduced into CPP hosts and the host-guest complexes were pyrolyzed. Electron microscopic observations revealed that the obtained sample didn’t include only amorphous structures but also tubular structures derived from SWNTs. In addition, Raman spectra displayed peaks attributed to SWNTs which possess semiconducting features, however, the fundamental unit of SWNTs employed is metallic features. Therefore, this indicated that ring structures of CPPs were decomposed during thermal treatment, generating a template for non SWNTs possessing metallic features.

Free Research Field

電子・電気材料工学