Electronic structure control of single-walled carbon nanotube functionalization.
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.
Strano
Michael S
MS
Department of Chemical and Biomolecular Engineering, University of Illinois-Urbana/Champaign, Urbana, IL 61801, USA. strano@uiuc.edu
Dyke
Christopher A
CA
Usrey
Monica L
ML
Barone
Paul W
PW
Allen
Mathew J
MJ
Shan
Hongwei
H
Kittrell
Carter
C
Hauge
Robert H
RH
Tour
James M
JM
Smalley
Richard E
RE