Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study
Result description
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. Thek-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 thepeapods 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.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study
Original language description
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. Thek-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 thepeapods 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.
Czech name
Dvojí pozice draslíku v chemicky dopovaných C60 peapodech: In-situ spektroelektrochemická studie
Czech description
Pomocí in situ Ramanovy spektroelektrochemie bylo studováno dopování fullerenových peapodů C60@SWCNT po vystavení K páře. Pro všechny vzorky bylo silné chemické n ? dopování prokázáno vyhasnutím radiálního modu a posunem tangenciálního modu k nižším frekvencím. K-dopované peapody zůstávají částečně dopovány ikdyž jsou vystaveny vlhkému vzduchu. Ag(2) mod vnitřního fullerenu v K-dopovaných peapodech, které byly v kontaktu se vzduchem je stále posunut k nižším frekvencím vzhledem k jeho pozici v původnímpeapodu. Příčinou na vzduch necitlivého zbytkového dopování je draslík, který pronikl dovnitř peapodů. Toto dopování může být odstraněno pouze elektrochemickou oxidací. Z tohoto plyne přítomnost dvojí pozice draslíku v dopovaném vzorku.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CG - Electrochemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry
ISSN
1089-5647
e-ISSN
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Volume of the periodical
108
Issue of the periodical within the volume
20
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
6275-6280
UT code for WoS article
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EID of the result in the Scopus database
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Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
CG - Electrochemistry
Year of implementation
2004