A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers.. / Jafeen, M.J.M.; Careem, M.A.; Skaarup, Steen.

In: Journal of Solid State Electrochemistry, Vol. 16, 2012, p. 1753-1759.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Jafeen, M.J.M.; Careem, M.A.; Skaarup, Steen / A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers..

In: Journal of Solid State Electrochemistry, Vol. 16, 2012, p. 1753-1759.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Bibtex

@article{1cd3e725f5164ce9a85914cf66ded609,
title = "A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers.",
keywords = "EQCM, Polypyrrole, Hydration number, Solvation number, Cyclic voltammetry",
publisher = "Springer",
author = "M.J.M. Jafeen and M.A. Careem and Steen Skaarup",
year = "2012",
doi = "10.1007/s10008-011-1594-2",
volume = "16",
pages = "1753--1759",
journal = "Journal of Solid State Electrochemistry",
issn = "1432-8488",

}

RIS

TY - JOUR

T1 - A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers.

A1 - Jafeen,M.J.M.

A1 - Careem,M.A.

A1 - Skaarup,Steen

AU - Jafeen,M.J.M.

AU - Careem,M.A.

AU - Skaarup,Steen

PB - Springer

PY - 2012

Y1 - 2012

N2 - Polypyrrole polymer films doped with the large, immobile dodecy lbenzene <br/>sulfonate anions operating in alkali halide aqueous electroly tes has beenused as a novel physico-chemical environment to develop a more direct way of obtaining reliable values for the hydration numbers of cations. Simultaneous cyclic voltammetry and electrochemical quartz crystal microbalance technique was used to determine the amount of charge inserted and the total mass change during the reduction process in a polypyrrole film. From these values, the number of water molecules accompanying each cation was evaluated. The number of water moleculesentering the polymer during the initial part of the first reduction was found to be constant and independent of the concentration of the electrolyte below ∼1 M. This well-defined value can be considered as the primarymembrane hydration number of the cation involved in the reduction process. The goal was to investigate both the effects of cation size and of cation charge. The membrane hydration number values obtained by this simple and direct method for a number of cations are: The hydration number for all of these cations seems to follow the same simple relation.

AB - Polypyrrole polymer films doped with the large, immobile dodecy lbenzene <br/>sulfonate anions operating in alkali halide aqueous electroly tes has beenused as a novel physico-chemical environment to develop a more direct way of obtaining reliable values for the hydration numbers of cations. Simultaneous cyclic voltammetry and electrochemical quartz crystal microbalance technique was used to determine the amount of charge inserted and the total mass change during the reduction process in a polypyrrole film. From these values, the number of water molecules accompanying each cation was evaluated. The number of water moleculesentering the polymer during the initial part of the first reduction was found to be constant and independent of the concentration of the electrolyte below ∼1 M. This well-defined value can be considered as the primarymembrane hydration number of the cation involved in the reduction process. The goal was to investigate both the effects of cation size and of cation charge. The membrane hydration number values obtained by this simple and direct method for a number of cations are: The hydration number for all of these cations seems to follow the same simple relation.

KW - EQCM

KW - Polypyrrole

KW - Hydration number

KW - Solvation number

KW - Cyclic voltammetry

U2 - 10.1007/s10008-011-1594-2

DO - 10.1007/s10008-011-1594-2

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

VL - 16

SP - 1753

EP - 1759

ER -