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



Pallavicini, P, Bassi, B, Chirico, G, Collini, M, Dacarro, G, Fratini, E, Grisoli, P, Patrini, M, Sironi, L, Taglietti, A
et al (show 8 more authors) (2017) Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release. Scientific Reports, 7.

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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.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 12 Jul 2017 13:55
Last Modified: 22 Jan 2021 12:09
DOI: 10.1038/s41598-017-05693-3
Open Access URL: https://www.nature.com/articles/s41598-017-05693-3
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3008434