Article (Scientific journals)
All-in-one strategy for the fabrication of antimicrobial biomimetic films on stainless steel
Charlot, Aurélia; Sciannamea, Valérie; Lenoir, Sandrine et al.
2009In Journal of Materials Chemistry, 19, p. 4117-4125
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Keywords :
biomimetic; stainless steel; film; antimicrobial polymer; coating
Abstract :
[en] Here we report on an all-in-one approach to prepare robust antimicrobial films on stainless steel. The strategy is based on the layer-by-layer deposition of polyelectrolytes. A polycationic copolymer bearing 3,4-dihydroxyphenylalanine units (DOPA, a major component of natural adhesives) was synthesized and co-deposited with precursors of silver nanoparticles as the first layer. The presence of DOPA units ensures a strong anchoring on the stainless steel substrate, and the silver nanoparticles are sources of biocidal Ag+, providing stainless steel with antimicrobial activity. We show that multilayered films, obtained by alternating this nanoparticle-loaded polycationic copolymer with polystyrene sulfonate, a commercial polyanion, results in stainless steel with high antibacterial activity against Gram-negative E. coli bacteria. The polycationic layers are a reservoir of Ag+ that can be reactivated after depletion. The whole process of film formation, including the synthesis of the copolymer, is conducted in aqueous media under very mild conditions, which makes it very attractive for industrial scale-up and sustainable applications.
Research center :
Giga-Systems Biology and Chemical Biology - ULiège
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Biochemistry, biophysics & molecular biology
Author, co-author :
Charlot, Aurélia;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Sciannamea, Valérie;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Lenoir, Sandrine;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Faure, Emilie ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Christine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Van de Weerdt, Cécile ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire
Martial, Joseph ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire
Archambeau, Catherine;  ArcelorMittal Liege Research
Willet, Nicolas ;  Université de Liège - ULiège > Département de chimie (sciences) > Nano-chimie et systèmes moléculaires
Duwez, Anne-Sophie  ;  Université de Liège - ULiège > Département de chimie (sciences) > Nano-chimie et systèmes moléculaires
Fustin, Charles-André;  Université Catholique de Louvain - UCL
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
More authors (3 more) Less
Language :
English
Title :
All-in-one strategy for the fabrication of antimicrobial biomimetic films on stainless steel
Publication date :
05 December 2009
Journal title :
Journal of Materials Chemistry
ISSN :
0959-9428
eISSN :
1364-5501
Publisher :
Royal Society of Chemistry, Cambridge, United Kingdom
Volume :
19
Pages :
4117-4125
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The "Région Wallonne" in the frame of the BIOCOAT program
ArcelorMittal Research [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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