0181677 - UFCH-W 20030104 RIV US eng J - Journal Article
Kavan, Ladislav - Dunsch, L.
Diameter-Selective Electrochemical Doping of HiPco Single Wall Carbon Nanotubes.
Nano Letters. Roč. 3, č. 7 (2003), s. 969-972. ISSN 1530-6984. E-ISSN 1530-6992
R&D Projects: GA AV ČR IAA4040306
Institutional research plan: CEZ:AV0Z4040901
Keywords : electrochemical doping of HiPco * carbon
Subject RIV: CG - Electrochemistry
Impact factor: 6.144, year: 2003

Electrochemical doping of HiPco nanotubes was studied in acetonitrile solution containing four different electrolytes (LiClO4, NMe4BF4, NBu4ClO4 and NOct4ClO4 (Me = methyl, Bu = butyl, Oct = octyl) and in two ionic liquids (1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-3-methylimidazolium hexafluorophosphate). In-situ Raman spectroelectrochemistry confirms the diameter-selective loss of Raman resonance upon doping: nanotubes having diameters between 1 to 1.2 nm are less effected by doping than both narrower and wider tubes. The counter-ions, which compensate the electronic charge in the solid, also influence the efficiency of doping. The less pronounced doping was traced for 1-butyl-3-methylimidazolium cations.
Permanent Link: http://hdl.handle.net/11104/0078211