Electrochemical behaviour of hexacyanoferrate(II)/(III) and ferrocene/ferricinium in lyotropic liquid crystals of polyoxyethylene (10) cetylether (Brij 56)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F10%3A00357522" target="_blank" >RIV/61388980:_____/10:00357522 - 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

Electrochemical behaviour of hexacyanoferrate(II)/(III) and ferrocene/ferricinium in lyotropic liquid crystals of polyoxyethylene (10) cetylether (Brij 56)

Popis výsledku v původním jazyce

The conductivity of a lyotropic liquid crystal medium (LLC) consisting of 50:50 wt.% Brij 56 (R) and 0.5 M aqueous KCl was found to be five times lower than the purely aqueous solution. Electrochemical properties of potassium hexacyanoferrate(II)/(III) and ferrocene/ferricinium in the LLC were examined by cyclic voltammetry and chronoamperometry on platinum foil and microdisk electrodes. Ferricinium reduction, while complicated in water by precipitation of ferrocene. showed solution behaviour and normaldiffusion control in the liquid crystal. Effective diffusion coefficients of ferrocene and ferrocinium in the lyotropic liquid crystal were found to be further reduced to 4-5 x 10(-8) cm(2) s(-1). The lower diffusion coefficients compared with those inliquid solvents were attributed to restricted mobility and channel size effects in the LLC. The results are relevant to the design of electrochemical syntheses using LLC as nanostructured templates or as amphiphilic solvents.

Název v anglickém jazyce

Electrochemical behaviour of hexacyanoferrate(II)/(III) and ferrocene/ferricinium in lyotropic liquid crystals of polyoxyethylene (10) cetylether (Brij 56)

Popis výsledku anglicky

The conductivity of a lyotropic liquid crystal medium (LLC) consisting of 50:50 wt.% Brij 56 (R) and 0.5 M aqueous KCl was found to be five times lower than the purely aqueous solution. Electrochemical properties of potassium hexacyanoferrate(II)/(III) and ferrocene/ferricinium in the LLC were examined by cyclic voltammetry and chronoamperometry on platinum foil and microdisk electrodes. Ferricinium reduction, while complicated in water by precipitation of ferrocene. showed solution behaviour and normaldiffusion control in the liquid crystal. Effective diffusion coefficients of ferrocene and ferrocinium in the lyotropic liquid crystal were found to be further reduced to 4-5 x 10(-8) cm(2) s(-1). The lower diffusion coefficients compared with those inliquid solvents were attributed to restricted mobility and channel size effects in the LLC. The results are relevant to the design of electrochemical syntheses using LLC as nanostructured templates or as amphiphilic solvents.

Druh

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

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

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Svazek periodika

646

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000280622800003

EID výsledku v databázi Scopus

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