Friday, September 11, 2009

measuring single nanotubes

gradually coming back to the nanoworld after some time spent getting excited about other things, I really liked a paper from this week's Angewandte Early View release. The authors measure the electrochemical potentials and other parameters of individual carbon nanotubes with known chirality parameters, which wasn't possible so far. For applications in electronics, the differences between nanotubes wrapped in different directions are extremely important, and sorting them apart has been a challenge (but see here how it can be done with DNA). Understanding the single-molecule electronic properties, apart from being important for the fundamental understanding of these differences, may also be useful as a diagnostic or for the development of new ways of picking them apart, I reckon.


Reference:

Experimentally Determined Redox Potentials of Individual (n,m) Single-Walled Carbon Nanotubes
Yasuhiko Tanaka, Yasuhiko Hirana, Yasuro Niidome, Koichiro Kato, Susumu Saito, Naotoshi Nakashima

Angew. Chem. Int. Ed. 2009
Published Online: Sep 8 2009 12:17PM
DOI: 10.1002/anie.200902468
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