title: Dissymmetric carbon nanotubes by bipolar electrochemistry.
abstract: 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.
authors.affiliation: University Bordeaux 1, ISM UMR 5255, Site ENSCPB, 33607 Pessac, France.
authors.forename: Chompunuch
authors.initials: C
authors.lastname: Warakulwit
authors.forename: Thi
authors.initials: T
authors.lastname: Nguyen
authors.forename: Jérome
authors.initials: J
authors.lastname: Majimel
authors.forename: Marie-Hélène
authors.initials: MH
authors.lastname: Delville
authors.forename: Véronique
authors.initials: V
authors.lastname: Lapeyre
authors.forename: Patrick
authors.initials: P
authors.lastname: Garrigue
authors.forename: Valérie
authors.initials: V
authors.lastname: Ravaine
authors.forename: Jumras
authors.initials: J
authors.lastname: Limtrakul
authors.forename: Alexander
authors.initials: A
authors.lastname: Kuhn
mesh_terms: 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
chemical_list: D003102:Colloids; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon