2013
DOI: 10.1002/adhm.201200269
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Versatile Photochemical Surface Modification of Biopolyester Microfibrous Scaffolds with Photogenerated Silver Nanoparticles for Antibacterial Activity

Abstract: A straightforward and versatile method for immobilizing macromolecules and silver nanoparticles on the surface of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBHV) electrospun fibers is developed with the objective of designing a new functional material having significant antibacterial activity. The approach relies on a two-step procedure: UV photografting of poly(methacrylic acid) (PMAA) on the surface of PHBHV fibers according to a "grafting from" method, and complexation of in situ photogenerated silver … Show more

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Cited by 38 publications
(29 citation statements)
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“…When used as implants for medical purposes, cell material interactions are governed by chemical and physical surface properties that trigger initial protein adsorption, and regulate further downstream signals for cell adhesion, cell proliferation, and/or differentiation . Typically, improved biointerfaces and surface functionalization are addressed by post‐treatment such as plasma coating processes, layer by layer assembly, photochemical surface modifications, wet chemical treatment, or gas phase induced coating processes . Recently, fluorine‐functionalized surfaces have gained increasing interest in the field of biomedical applications due to their outstanding properties of hydrophobicity and oleophilicity, chemical resistance, low friction coefficient, and mechanical stability.…”
Section: Introductionmentioning
confidence: 99%
“…When used as implants for medical purposes, cell material interactions are governed by chemical and physical surface properties that trigger initial protein adsorption, and regulate further downstream signals for cell adhesion, cell proliferation, and/or differentiation . Typically, improved biointerfaces and surface functionalization are addressed by post‐treatment such as plasma coating processes, layer by layer assembly, photochemical surface modifications, wet chemical treatment, or gas phase induced coating processes . Recently, fluorine‐functionalized surfaces have gained increasing interest in the field of biomedical applications due to their outstanding properties of hydrophobicity and oleophilicity, chemical resistance, low friction coefficient, and mechanical stability.…”
Section: Introductionmentioning
confidence: 99%
“…The XPS spectrum exhibits an Ag 3d doublet at a binding energy of 374 eV for Ag 3d 3/2 with a doublet splitting of 6 eV. The second peak at 367.9 eV is attributed to the Ag 3d 5/2 signal which clearly indicates the presence of metal Ag 0 . Accordingly, these results evidence that the in situ photoinduced reduction of [Ag](PPh 3 ) is a powerful way to generate nanometer‐size silver NPs.…”
Section: Resultsmentioning
confidence: 64%
“…Different chemical modification strategies have been also adopted to improve cell adhesion onto electrospun PHA meshes, e.g., epoxy functionalization [65] and polysaccharide-grafting [66,67]. Other PHA fibers functionalization approaches include combination with antibacterial particles (e.g., silver [68] and zinc oxide [69] nanoparticles) or electrosprayed osteoconductive ceramics (e.g., HA nanoparticles [70]), as well as grafting with carbon nanotubes mechanical-reinforcing fillers [71].…”
Section: Electrospinningmentioning
confidence: 99%