Publication
558
Chem.
Mater., 14 (11), 4576 -4585, 2002
DOI: 10.1021/cm0211397 S0897-4756(02)01139-0 |
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Attachment of Polymers to Organic Moieties Covalently Bonded
to Iron Surfaces
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Alain
Adenier, Eva Cabet-Deliry, Thierry Lalot, Jean Pinson and
Fetah Podvorica
Laboratoire d'Electrochimie Moléculaire,
Université de Paris 7 - Denis Diderot, Case
Courrier 7107, 2 place Jussieu, 75251 Paris Cedex
05, France, Laboratoire de Synthèse Macromoléculaire,
Université Paris, 6 Pierre et Marie Curie,
Unité Mixte Université Paris 6 CNRS
7610, 4 Place Jussieu, 75252, Paris Cedex 05, France
and ITODYS, Université Paris 7 - Denis Diderot,
associé au CNRS (UPRESA 7086), 1 rue Guy de
la Brosse F 75005 Paris, France
This paper describes two different methods, based on the electrochemical
reduction of diazonium salts, for the strong binding of polymers to an
iron surface. The first method involves the electrochemical reduction,
on an iron electrode, of the diazonium salt of 4-aminobenzophenone. This
permits the covalent attachment of 4-benzoylphenyl moieties on the surface.
Polystyrene (PS) is then deposited on the modified iron surface and can
be covalently bonded to the 4-benzoylphenyl groups under irradiation.
Another method involves the attachment of carboxyphenyl groups to the
iron surface by reduction of the diazonium salt of 4-aminobenzoic acid
and the further attachment of poly(1,2-propanediyl fumarate) to the phenylcarboxylate
functions through ionic bonds with Mg2+ ions. The barrier
properties of the polymeric films are characterized by electrochemistry
and by the protection they provide against corrosion. |
