Issue 2, 2023

Dual mode antibacterial surfaces based on Prussian blue and silver nanoparticles

Abstract

Prussian Blue (PB) is an inexpensive, biocompatible, photothermally active material. In this paper, self-assembled monolayers of PB nanoparticles were grafted on a glass surface, protected with a thin layer of silica and decorated with spherical silver nanoparticles. This combination of a photothermally active nanomaterial, PB, and an intrinsically antibacterial one, silver, leads to a versatile coating that can be used for medical devices and implants. The intrinsic antibacterial action of nanosilver, always active over time, can be enhanced on demand by switching on the photothermal effect of PB using near infrared (NIR) radiation, which has a good penetration depth through tissues and low side effects. Glass surfaces functionalized by this layer-by-layer approach have been characterized for their morphology and composition, and their intrinsic and photothermal antibacterial effect was studied against Gram+ and Gram− planktonic bacteria.

Graphical abstract: Dual mode antibacterial surfaces based on Prussian blue and silver nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
20 Sep 2022
Accepted
06 Dec 2022
First published
16 Dec 2022
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2023,52, 452-460

Dual mode antibacterial surfaces based on Prussian blue and silver nanoparticles

L. Doveri, A. Taglietti, P. Grisoli, P. Pallavicini and G. Dacarro, Dalton Trans., 2023, 52, 452 DOI: 10.1039/D2DT03058F

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