AFM and STM characterization of thiol and thiophene functionalized SWNTs: pitfalls in the use of chemical markers to determine the extent of sidewall functionalization in SWNTs.
Thiol- and thiophene-functionalized SWNTs prepared via the reaction of a substituted amine with fluoronanotubes show similar levels of sidewall functionalization, however, the use of Au nanoparticles as chemical markers for AFM gives misleading results for substituent distribution since STM shows the thiol substituents grouped in bands while the thiophene substituents uniformly distributed along the SWNTs.
Zhang
Lei
L
Department of Chemistry, Rice University, Houston, Texas 77005, USA.
Zhang
Jun
J
Schmandt
Nicolaus
N
Cratty
Justin
J
Khabashesku
Valery N
VN
Kelly
Kevin F
KF
Barron
Andrew R
AR