Self-Assembled Hexa- peri -hexabenzocoronene Graphitic Nanotube

Author:

Hill Jonathan P.1234,Jin Wusong1234,Kosaka Atsuko1234,Fukushima Takanori1234,Ichihara Hideki1234,Shimomura Takeshi1234,Ito Kohzo1234,Hashizume Tomihiro1234,Ishii Noriyuki1234,Aida Takuzo1234

Affiliation:

1. Aida Nanospace Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, National Museum of Emerging Science and Innovation, 2-41 Aomi, Koto-ku, Tokyo 135-0064, Japan.

2. Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8561, Japan.

3. Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-0395, Japan.

4. Biological Information Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central-6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.

Abstract

An amphiphilic hexa- peri -hexabenzocoronene self-assembles to form a π-electronic, discrete nanotubular object. The object is characterized by an aspect ratio greater than 1000 and has a uniform, 14-nanometer-wide, open-ended hollow space, which is an order of magnitude larger than those of carbon nanotubes. The wall is 3 nanometers thick and consists of helical arrays of the π-stacked graphene molecule, whose exterior and interior surfaces are covered by hydrophilic triethylene glycol chains. The graphitic nanotube is redox active, and a single piece of the nanotube across 180-nanometer-gap electrodes shows, upon oxidation, an electrical conductivity of 2.5 megohms at 285 kelvin. This family of molecularly engineered graphite with a one-dimensional tubular shape and a chemically accessible surface constitutes an important step toward molecular electronics.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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