Dissymmetric carbon nanotubes by bipolar electrochemistry.
Short carbon nanotubes have been modified selectively on one end with metal using a bulk technique based on bipolar electrochemistry. A stabilized suspension of nanotubes is introduced in a capillary containing an aqueous metal salt solution, and a high electric field is applied to orientate and polarize the individual tubes. During their transport through the capillary under sufficient polarization (30 kV), each nanotube is the site of water oxidation on one end and the site of metal ion reduction on the other end with the size of the formed metal cluster being proportional to the potential drop along the nanotube.
Warakulwit
Chompunuch
C
University Bordeaux 1, ISM UMR 5255, Site ENSCPB, 33607 Pessac, France.
Nguyen
Thi
T
Majimel
Jérome
J
Delville
Marie-Hélène
MH
Lapeyre
Véronique
V
Garrigue
Patrick
P
Ravaine
Valérie
V
Limtrakul
Jumras
J
Kuhn
Alexander
A
D003102:Colloids / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
D003102:Colloids; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon