Ionic Liquid for in situ Vis/NIR and Raman Spectroelectrochemistry: Doping of Carbon Nanostructures.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030145" target="_blank" >RIV/61388955:_____/03:54030145 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Ionic Liquid for in situ Vis/NIR and Raman Spectroelectrochemistry: Doping of Carbon Nanostructures.

Popis výsledku v původním jazyce

Ionic liquids like butylmethylimidazolium tetrafluoroborate are shown to be an advantageous electrolyte for the study of charge transfer reactions at carbon nanostructures. Hence, single-walled carbon nanotubes (SWCNT) and fullerene peapods (C60@SWCNT) were charged electrochemically in this electrolyte. Compared to traditional electrolyte solutions, this medium offers broader window of electrochemical potentials to be applied. The used ionic liquid has also favorable optical properties for in-situ Vis-NIR and Raman spectroelectrochemistry of nanocarbons. Electrochemistry of both nanotubes and peapods is dominated by their capacitive double-layer charging. In-situ measured Vis-NIR spectra of nanotubes and peapods demonstrate reversible bleaching of thetransitions between Van Hove singularities. At high anodic potentials, new optical transitions were activated. They were assigned to electron transfer within partly filled valence band.

Název v anglickém jazyce

Ionic Liquid for in situ Vis/NIR and Raman Spectroelectrochemistry: Doping of Carbon Nanostructures.

Popis výsledku anglicky

Ionic liquids like butylmethylimidazolium tetrafluoroborate are shown to be an advantageous electrolyte for the study of charge transfer reactions at carbon nanostructures. Hence, single-walled carbon nanotubes (SWCNT) and fullerene peapods (C60@SWCNT) were charged electrochemically in this electrolyte. Compared to traditional electrolyte solutions, this medium offers broader window of electrochemical potentials to be applied. The used ionic liquid has also favorable optical properties for in-situ Vis-NIR and Raman spectroelectrochemistry of nanocarbons. Electrochemistry of both nanotubes and peapods is dominated by their capacitive double-layer charging. In-situ measured Vis-NIR spectra of nanotubes and peapods demonstrate reversible bleaching of thetransitions between Van Hove singularities. At high anodic potentials, new optical transitions were activated. They were assigned to electron transfer within partly filled valence band.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA4040306" target="_blank" >IAA4040306: Přenos náboje v organizovaných supramolekulárních soustavách fullerenů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ChemPhysChem

ISSN

1439-4235

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

944-950

Kód UT WoS článku

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EID výsledku v databázi Scopus

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