Possible One-Dimensional Helical Conductor: Hexa-peri-hexabenzocoronene Nanotube

Toshifumi Hara; Ko Furukawa; Toshikazu Nakamura; Yohei Yamamoto; Atsuko Kosaka; Wusong Jin; Takanori Fukushima; Takuzo Aida

doi:10.1143/jpsj.77.034710

Possible One-Dimensional Helical Conductor: Hexa-peri-hexabenzocoronene Nanotube

Toshifumi Hara, Ko Furukawa, Toshikazu Nakamura, Yohei Yamamoto, Atsuko Kosaka, Wusong Jin, Takanori Fukushima, Takuzo Aida

Author information

Toshifumi Hara
Institute for Molecular Science
Ko Furukawa
Institute for Molecular Science
The Graduate University for Advanced Studies
Toshikazu Nakamura
Institute for Molecular Science
The Graduate University for Advanced Studies
Yohei Yamamoto
Aida Nanospace Project, Exploratory Research for Advanced Technology and Solution Oriented Research for Science and Technology (ERATO-SORST), Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation
Atsuko Kosaka
Aida Nanospace Project, Exploratory Research for Advanced Technology and Solution Oriented Research for Science and Technology (ERATO-SORST), Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation
Wusong Jin
Aida Nanospace Project, Exploratory Research for Advanced Technology and Solution Oriented Research for Science and Technology (ERATO-SORST), Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation
Takanori Fukushima
Aida Nanospace Project, Exploratory Research for Advanced Technology and Solution Oriented Research for Science and Technology (ERATO-SORST), Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo
Takuzo Aida
Aida Nanospace Project, Exploratory Research for Advanced Technology and Solution Oriented Research for Science and Technology (ERATO-SORST), Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo

Keywords: nano-tube, helical, one-dimensional conductor, ESR, NMR

JOURNAL RESTRICTED ACCESS

2008 Volume 77 Issue 3 Pages 034710

DOI https://doi.org/10.1143/jpsj.77.034710

Details

Abstract

ESR and ¹H NMR investigations were performed on iodine-doped HBC nanotubes to understand the low-temperature electronic states and carrier dynamics. Using ESR measurements, we clarified that the charged carriers induced by iodine-doping possess spins, and we found two kinds of spin species with different doping levels. The ESR results indicate the itinerant features down to 170 K. The ¹H T₁⁻¹ for the heavy-iodine-doped HBC nanotubes follows T^0.5 and exhibits a characteristic frequency dependence. We propose that the spin excitation propagates along the one-dimensional helical chain.

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