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Mussel-inspired coatings with tunable wettability, for enhanced antibacterial efficiency and reduced bacterial adhesion

  • Over the last few decades, there has been a tremendous increase in research on antibacterial surface coatings as an alternative strategy against bacterial infections. Although there are several examples of effective strategies to prevent bacterial adhesion, the effect of the wetting properties on the coating was rarely considered as a crucial factor. Here we report an in-depth study on the effect of extreme wettability on the antibacterial efficiency of a silver nanoparticles (AgNPs)-based coating. By Controlling surface polymerization of mussel-inspired dendritic polyglycerol (MI-dPG) and post-functionalization, surfaces with wetting properties ranging from superhydrophilic to superhydrophobic were fabricated. Subsequently, AgNPs were embedded into the coatings by applying in situ reduction using the free catechols-moieties present in the MI-dPG coating. The resulting polymer coatings exhibited excellent antibacterial ability against planktonic Escherichia coli (E. coli) DH5a andOver the last few decades, there has been a tremendous increase in research on antibacterial surface coatings as an alternative strategy against bacterial infections. Although there are several examples of effective strategies to prevent bacterial adhesion, the effect of the wetting properties on the coating was rarely considered as a crucial factor. Here we report an in-depth study on the effect of extreme wettability on the antibacterial efficiency of a silver nanoparticles (AgNPs)-based coating. By Controlling surface polymerization of mussel-inspired dendritic polyglycerol (MI-dPG) and post-functionalization, surfaces with wetting properties ranging from superhydrophilic to superhydrophobic were fabricated. Subsequently, AgNPs were embedded into the coatings by applying in situ reduction using the free catechols-moieties present in the MI-dPG coating. The resulting polymer coatings exhibited excellent antibacterial ability against planktonic Escherichia coli (E. coli) DH5a and Staphylococcus aureus (S. aureus) SH1000. The antibacterial efficiency of the coatings was analyzed by using inductively coupled plasma mass spectrometry (ICP-MS) and bacterial viability tests. Furthermore, the Antifouling properties of the coatings in relation to the antibacterial properties were evaluated.zeige mehrzeige weniger

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Metadaten
Autor*innen:M. Li, C. Schlaich, M. W. Kulka, Ievgen DonskyiORCiD, T. Schwerdtle, Wolfgang UngerORCiD, R. Haag
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Journal of Materials Chemistry B
Jahr der Erstveröffentlichung:2019
Organisationseinheit der BAM:6 Materialchemie
6 Materialchemie / 6.1 Oberflächen- und Dünnschichtanalyse
Verlag:The Royal Society of Chemistry
Jahrgang/Band:7
Ausgabe/Heft:21
Erste Seite:3438
Letzte Seite:3445
DDC-Klassifikation:Naturwissenschaften und Mathematik / Chemie / Analytische Chemie
Freie Schlagwörter:Antibacterial surface coatings; Mussel-inspired dendritic polyglycerol (MI-dPG); Silver nanoparticles; XPS
Themenfelder/Aktivitätsfelder der BAM:Chemie und Prozesstechnik
DOI:10.1039/c9tb00534j
ISSN:2050-750X
ISSN:2050-7518
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:22.07.2019
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:22.07.2019
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