Electroreduction of diphenyl disulfide on a self-assembled lipid monolayer on mercury
Electroreduction of diphenyl disulfide on a self-assembled lipid monolayer on mercury
In the present work, a voltammetric study of permeability and redox behavior of diphenyl disulfide (Ph2S2) through a self-assembled monolayer of dioleoylphosphatidylcholine adsorbed on mercury is carried out; the results are compared with those obtained on a bare electrode; in this case, the reduction of Ph2S2 proceeds in a reversible way with the formation of a mercurial compound. The presence of the monolayer of phospholipid provokes an increase in the process irreversibility. Different mechanisms based on Ph2S2 adsorption either directly on a mercury drop or on phospholipids heads are proposed. The charge associated with the adsorbed Ph2S2 electroreduction was employed to calculate its solubility, and the method is compared with semiempirical expressions proposed in the literature for obtaining approximate values of solubility.
9377-9382
Lodeiro, P.
2a3db327-ecb7-4c32-bc61-13e01aed7182
Herrero, R.
ee7f0139-d8ac-4084-a73e-5eaa91b2e29a
Sastre de Vicente, M.E.
2bd016ef-20cf-4fb4-9282-1ca22142bcb4
November 2002
Lodeiro, P.
2a3db327-ecb7-4c32-bc61-13e01aed7182
Herrero, R.
ee7f0139-d8ac-4084-a73e-5eaa91b2e29a
Sastre de Vicente, M.E.
2bd016ef-20cf-4fb4-9282-1ca22142bcb4
Lodeiro, P., Herrero, R. and Sastre de Vicente, M.E.
(2002)
Electroreduction of diphenyl disulfide on a self-assembled lipid monolayer on mercury.
Langmuir, 18 (24), .
(doi:10.1021/la025977r).
Abstract
In the present work, a voltammetric study of permeability and redox behavior of diphenyl disulfide (Ph2S2) through a self-assembled monolayer of dioleoylphosphatidylcholine adsorbed on mercury is carried out; the results are compared with those obtained on a bare electrode; in this case, the reduction of Ph2S2 proceeds in a reversible way with the formation of a mercurial compound. The presence of the monolayer of phospholipid provokes an increase in the process irreversibility. Different mechanisms based on Ph2S2 adsorption either directly on a mercury drop or on phospholipids heads are proposed. The charge associated with the adsorbed Ph2S2 electroreduction was employed to calculate its solubility, and the method is compared with semiempirical expressions proposed in the literature for obtaining approximate values of solubility.
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Published date: November 2002
Organisations:
Ocean Biochemistry & Ecosystems
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Local EPrints ID: 355105
URI: http://eprints.soton.ac.uk/id/eprint/355105
ISSN: 0743-7463
PURE UUID: 230f2514-2217-4cf1-8043-bb016bec83b4
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Date deposited: 30 Jul 2013 14:27
Last modified: 14 Mar 2024 14:28
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Author:
P. Lodeiro
Author:
R. Herrero
Author:
M.E. Sastre de Vicente
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