Number of the records: 1
Tuning of Sorted Double-Walled Carbon Nanotubes by Electrochemical Charging
- 1.
SYSNO ASEP 0345289 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Tuning of Sorted Double-Walled Carbon Nanotubes by Electrochemical Charging Author(s) Kalbáč, Martin (UFCH-W) RID, ORCID
Green, A. A. (US)
Hersam, M. C. (US)
Kavan, Ladislav (UFCH-W) RID, ORCIDSource Title ACS Nano. - : American Chemical Society - ISSN 1936-0851
Roč. 4, č. 1 (2010), s. 459-469Number of pages 10 s. Language eng - English Country US - United States Keywords double-walled carbon nanotubes ; electrochemical gating ; spectroelectrochemistry Subject RIV CG - Electrochemistry R&D Projects IAA400400911 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA400400804 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KAN200100801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GC203/07/J067 GA ČR - Czech Science Foundation (CSF) LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000273863400057 DOI 10.1021/nn900895w Annotation Double-walled carbon nanotubes sorted by density gradient ultracentrifugation were examined by Raman spectroscopy and by in situ Raman spectroelectrochemistry. The sorted samples had a narrow distribution of diameters of both inner and outer tubes, which enabled a comparison of the behavior of inner metallic tubes and Inner semiconducting nanotubes as a function of the applied electrochemical potential. The metallic inner tubes were efficiently doped even though they were protected from electrolyte Ions by the outer wall, whereas the doping of semiconducting Inner tubes was observed only at high magnitudes of the electrode potential. These results indicate that the doping response of inner tubes is predominantly controlled by inner tube electronic properties. On the other hand, the effect of electronic structure of the outer tube on the behavior of inner tube is weak. Furthermore, the efficiency of the charge transfer from outer to inner wall depends on the doping level. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
Number of the records: 1