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Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study
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SYSNO ASEP 0101059 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study Title Dvojí pozice draslíku v chemicky dopovaných C60 peapodech: In-situ spektroelektrochemická studie Author(s) Kalbáč, Martin (UFCH-W) RID, ORCID
Kavan, Ladislav (UFCH-W) RID, ORCID
Zukalová, Markéta (UFCH-W) RID, SAI, ORCID
Dunsch, L. (DE)Source Title Journal of Physical Chemistry. B - ISSN 1089-5647
Roč. 108, č. 20 (2004), s. 6275-6280Number of pages 6 s. Language eng - English Country US - United States Keywords C60 ; spectroelectrochemical study ; peapods Subject RIV CG - Electrochemistry R&D Projects IAA4040306 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KSK4040110 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Annotation The state of doping of fullerene peapods C60/@SWCNT treated with K vapor was studied by in situ Raman spectroelectrochemistry. For all samples under study a heavy chemical n-doping was proved by vanishing od the RBM mode and the downshift of TG mode. The k-doped peapods remain partly doped even if they are exposed to humid air. The Ag(2) mode of intratubular fellerene in K-doped peapods in contact with air was still red-shifted as referred to its position in pristine peapods. Potassium inserted into the peapods is the reason for the air-insensitive residual doping, which can be removed only by electrochemical oxidation. This indicates the presence of two positions of potassium in doped sample. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2005
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