About: Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study     Goto   Sponge   NotDistinct   Permalink

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  • 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 původním peapodu. 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. (cs)
  • 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.
  • 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. (en)
Title
  • Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study
  • Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study (en)
  • Dvojí pozice draslíku v chemicky dopovaných C60 peapodech: In-situ spektroelektrochemická studie (cs)
skos:prefLabel
  • Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study
  • Two Positions of Potasium in Chemically Doped C60 Peapods: An in situ Spectroelectrochemical Study (en)
  • Dvojí pozice draslíku v chemicky dopovaných C60 peapodech: In-situ spektroelektrochemická studie (cs)
skos:notation
  • RIV/61388955:_____/04:00101059!RIV/2005/AV0/A54005/N
http://linked.open.../vavai/riv/strany
  • 6275;6280
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA4040306), P(KSK4040110)
http://linked.open...iv/cisloPeriodika
  • 20
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 591059
http://linked.open...ai/riv/idVysledku
  • RIV/61388955:_____/04:00101059
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • C60; spectroelectrochemical study; peapods (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [F93644A029ED]
http://linked.open...i/riv/nazevZdroje
  • Journal of Physical Chemistry
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 108
http://linked.open...iv/tvurceVysledku
  • Dunsch, L.
  • Kalbáč, Martin
  • Kavan, Ladislav
  • Zukalová, Markéta
issn
  • 1089-5647
number of pages
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