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Photo-responsive antibacterial surfaces combining both on-demand photo-switchable activity and sustained biocidal release were prepared using sequential chemical grafting of nano-objects with different geometries and functions. The multi-layered coating developed incorporates a monolayer of near-infrared active silica-coated gold nanostars (GNS) decorated by silver nanoparticles (AgNP). This modular approach also enables us to unravel static and photo-activated contributions to the overall antibacterial performance of the surfaces, demonstrating a remarkable synergy between these two mechanisms. Complementary microbiological and imaging evaluations on both planktonic and surface-attached bacteria provided new insights on these distinct but cooperative effects

Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release

PALLAVICINI, PIERSANDRO;BASSI, BARBARA;DACARRO, GIACOMO;GRISOLI, PIETRO;PATRINI, MADDALENA;TAGLIETTI, ANGELO MARIA;Diaz Fernandez, Yuri A.
2017-01-01

Abstract

Photo-responsive antibacterial surfaces combining both on-demand photo-switchable activity and sustained biocidal release were prepared using sequential chemical grafting of nano-objects with different geometries and functions. The multi-layered coating developed incorporates a monolayer of near-infrared active silica-coated gold nanostars (GNS) decorated by silver nanoparticles (AgNP). This modular approach also enables us to unravel static and photo-activated contributions to the overall antibacterial performance of the surfaces, demonstrating a remarkable synergy between these two mechanisms. Complementary microbiological and imaging evaluations on both planktonic and surface-attached bacteria provided new insights on these distinct but cooperative effects
2017
Chemistry & Analysis covers research on natural and laboratory syntheses, chemical structure, structure-function relationship, isolation and analyses of biologically significant molecules, medicinal and food chemistry. Technical material describing crucial chemical methods in biochemical analysis and research is also placed in this category. Resources covering general biochemistry and natural metabolic pathways are excluded.
Materials Science and Engineering is concerned with admixtures of matter or the basic matter from which products are made. The category covers ceramics, paper and wood products, polymers, textiles, composites, coatings & films, and biomaterials. Other areas covered in this category include Materials Chemistry, the application of chemistry to materials design and testing; Condensed Matter/Solid State Physics, the branch of physics concerned with the structure and properties of condensed matter (superconductors, semiconductors, ferroelectrics, and dielectrics); and Physical Chemistry/Chemical Physics, the application of the concepts and laws of physics to chemical phenomena.
SCIENTIFIC REPORTS
sì
WOS:000405425000063
2-s2.0-85023776461
Esperti anonimi
Inglese
Internazionale
ELETTRONICO
7
1
5259
10
28701753
gold nanostars, silver nanoparticles, antibacterial materials, photothermal effect, laser, Escherichia coli, Staphilococcus aureus
https://www.nature.com/articles/s41598-017-05693-3
sì
18
info:eu-repo/semantics/article
262
Pallavicini, Piersandro; Bassi, Barbara; Chirico, Giuseppe; Collini, Maddalena; Dacarro, Giacomo; Fratini, Emiliano; Grisoli, Pietro; Patrini, Maddale...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/1193771
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