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Polarised liquid/liquid micro-interfaces move during charge transfer

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Dale, Sara E. C. and Unwin, Patrick R.. (2008) Polarised liquid/liquid micro-interfaces move during charge transfer. Electrochemistry Communications, Vol.10 (No.5). pp. 723-726. ISSN 1388-2481

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Official URL: http://dx.doi.org/10.1016/j.elecom.2008.02.023

Abstract

The externally polarised micro-interface between two immiscible electrolyte solutions (ITIES) has been visualised during ion transfer using confocal laser scanning microscopy (CLSM). A water vertical bar 1,2-dichloroethane (DCE) micro-interface was formed at the tip of a glass micropipette. The DCE phase contained Nile Red, a fluorophore, which was used to visualise movements in the interface with CLSM. During voltammetric transfer of tetraethylammonium cation from the aqueous phase to DCE (in the micropipette), the interface - with and without adsorbed lipid - was found to undergo significant expansion. The movement of the interface was found to be completely reversible and rapid, as evident from potential step measurements. The studies reported herein have implications for studies of charge transfer at micro-ITIES which generally assume a static interface. (C) 2008 Elsevier B.V. All rights reserved.

Item Type:

Journal Article

Subjects:

Q Science > QD Chemistry

Divisions:

Faculty of Science > Chemistry

Library of Congress Subject Headings (LCSH):

Liquid-liquid interfaces, Ionic mobility, Charge transfer, Micropipettes, Confocal microscopy

Journal or Publication Title:

Electrochemistry Communications

Publisher:

Elsevier Inc.

ISSN:

1388-2481

Official Date:

May 2008

Dates:

Date	Event
May 2008	Published

Volume:

Vol.10

Number:

No.5

Number of Pages:

Page Range:

pp. 723-726

Identification Number:

10.1016/j.elecom.2008.02.023

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

Engineering and Physical Sciences Research Council (EPSRC), Syngenta UK

References:

[1] G. Taylor, H.H.J. Girault, J. Electroanal. Chem. 208 (1986) 179.
[2] P.D. Beattie, A. Delay, H.H. Girault, J. Electroanal. Chem. 380
(1995) 167.
[3] Y. Shao, M.V. Mirkin, Anal. Chem. 70 (1998) 3155.
[4] A.K. Kontturi, K. Kontturi, L. Murtomaki, B. Quinn, V.J. Cunnane,
J. Electroanal. Chem. 424 (1997) 69.
[5] H.J. Lee, H.H. Girault, Anal. Chem. 70 (1998) 4280.
[6] J.A. Manzanares, R.M. Allen, K. Kontturi, J. Electroanal. Chem. 483
(2000) 188.
[7] R.A. Dryfe, Phys. Chem. Chem. Phys. 8 (2006) 1869.
[8] C. Cai, Y. Tong, M.V. Mirkin, J. Phys. Chem. B 108 (2004) 17872.
[9] H.H. Girault, D.J. Schiffrin, J. Electroanal. Chem. 170 (1984) 127.
[10] R.M. Allen, D.E. Williams, Faraday Discuss. 104 (1996) 281.
[11] Y. Shao, M.V. Mirkin, J. Electroanal. Chem. 439 (1997) 137.
[12] A.A. Stewart, G. Taylor, H.H. Girault, J. McAleer, J. Electroanal.
Chem. 296 (1990) 491.
[13] F.O. Laforge, J. Carpino, S.A. Rotenberg, M.V. Mirkin, PNAS 104
(2007) 11895.
[14] P.R. Unwin, S.E.C. Dale, in: 10th International Seminar on Electroanalytical
Chemistry, Changchun, 16–19 October 2005.
[15] P.R. Unwin, in: 56th Annual Meeting of the International Society of
Electrochemistry, Korea, 25–30 September 2005.
[16] J. Strutwolf, J. Zhang, A.L. Barker, P.R. Unwin, Phys. Chem. Chem.
Phys. 3 (2001) 5553.
[17] N.C. Rudd, S. Cannan, E. Bitziou, I. Ciani, A.L. Whitworth, P.R.
Unwin, Anal. Chem. 77 (2005) 6205.
[18] E. Bitziou, N.C. Rudd, M.A. Edwards, P.R. Unwin, Anal. Chem. 78
(2006) 1435.