Self-assembled graphitic nanotubes from chiral hexa-peri-hexabenzocoronenes

ORGN 734

Wusong Jin, jin@nanospace.miraikan.jst.go.jp1, Takanori Fukushima1, Makiko Niki1, Atsuko Kosaka1, Noriyuki Ishii2, and Takozo Aida1. (1) Aida Nanospace Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency (JST), National Museum of Emerging Science and Innovation, 2-41 Aomi, Koto-ku, Tokyo 135-0064, Japan, (2) Biological Information Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central-6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
Recently, we have found that an amphiphilic hexa-peri-hexabenzocoronene (HBC), bearing two dodecyl chains on one side and two triethylene glycol chains on the other, self-assembles to give a discrete nanotubular object, which possesses an aspect ratio greater than 1000 and a uniform 14 nm wide hollow space. TEM studies have indicated that the nanotubes are likely formed by rolling-up of a pseudo-graphite helical tape composed of pi-stacked HBCs. We newly synthesized an amphiphilic HBC having chiral side chains and found that the molecular chirality is translated into a "supramolecular chirality", resulting in the formation of chiral graphitic nanotubes. Details of the self-assembling behavior of this chiral HBC will be reported.
 

Asymmetric Reactions, Molecular Recognition, Self Assembly, Bioorganic Chemistry, Process R&D
8:00 PM-10:00 PM, Wednesday, 16 March 2005 Convention Center -- Hall D, Poster

Division of Organic Chemistry

The 229th ACS National Meeting, in San Diego, CA, March 13-17, 2005