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Electronic Structure Control of Single-Walled Carbon Nanotube Functionalization

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Science  12 Sep 2003:
Vol. 301, Issue 5639, pp. 1519-1522
DOI: 10.1126/science.1087691

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Abstract

Diazonium reagents functionalize single-walled carbon nanotubes suspended in aqueous solution with high selectivity and enable manipulation according to electronic structure. For example, metallic species are shown to react to the near exclusion of semiconducting nanotubes under controlled conditions. Selectivity is dictated by the availability of electrons near the Fermi level to stabilize a charge-transfer transition state preceding bond formation. The chemistry can be reversed by using a thermal treatment that restores the pristine electronic structure of the nanotube.

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