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

Piersandro  Pallavicini; Barbara  Bassi; Giuseppe Chirico; Maddalena Collini; Giacomo Dacarro; Emiliano Fratini; Pietro Grisoli; Maddalena Patrini; Laura Sironi; Angelo Taglietti; Marcel Moritz; Ioritz Sorzabal-Bellido; Arturo Susarrey-Arce; Edward Latter; Alison J. Beckett; Ian A. Prior; Rasmita Raval; Yuri A. Diaz Fernandez

doi:10.1038/s41598-017-05693-3

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

Piersandro Pallavicini^*, Barbara Bassi, Giuseppe Chirico, Maddalena Collini, Giacomo Dacarro, Emiliano Fratini, Pietro Grisoli, Maddalena Patrini, Laura Sironi, Angelo Taglietti^*, Marcel Moritz, Ioritz Sorzabal-Bellido, Arturo Susarrey-Arce, Edward Latter, Alison J. Beckett, Ian A. Prior, Rasmita Raval^*, Yuri A. Diaz Fernandez

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

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.

Original language	English
Article number	5259
Number of pages	10
Journal	Scientific reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-05693-3
Publication status	Published - 12 Jul 2017
Externally published	Yes

Keywords

bimodal antibacterial surfaces
biocidal release
photo-switchable

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10.1038/s41598-017-05693-3Licence: CC BY

ArticleFinal published version, 2.78 MBLicence: CC BY

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Pallavicini, P., Bassi, B., Chirico, G., Collini, M., Dacarro, G., Fratini, E., Grisoli, P., Patrini, M., Sironi, L., Taglietti, A., Moritz, M., Sorzabal-Bellido, I., Susarrey-Arce, A., Latter, E., Beckett, A. J., Prior, I. A., Raval, R., & Diaz Fernandez, Y. A. (2017). Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release. Scientific reports, 7(1), Article 5259. https://doi.org/10.1038/s41598-017-05693-3

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title = "Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release",

abstract = "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. ",

keywords = "bimodal antibacterial surfaces, biocidal release, photo-switchable",

author = "Piersandro Pallavicini and Barbara Bassi and Giuseppe Chirico and Maddalena Collini and Giacomo Dacarro and Emiliano Fratini and Pietro Grisoli and Maddalena Patrini and Laura Sironi and Angelo Taglietti and Marcel Moritz and Ioritz Sorzabal-Bellido and Arturo Susarrey-Arce and Edward Latter and Beckett, {Alison J.} and Prior, {Ian A.} and Rasmita Raval and {Diaz Fernandez}, {Yuri A.}",

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doi = "10.1038/s41598-017-05693-3",

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Pallavicini, P, Bassi, B, Chirico, G, Collini, M, Dacarro, G, Fratini, E, Grisoli, P, Patrini, M, Sironi, L, Taglietti, A, Moritz, M, Sorzabal-Bellido, I, Susarrey-Arce, A, Latter, E, Beckett, AJ, Prior, IA, Raval, R & Diaz Fernandez, YA 2017, 'Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release', Scientific reports, vol. 7, no. 1, 5259. https://doi.org/10.1038/s41598-017-05693-3

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T1 - Modular approach for bimodal antibacterial surfaces combining photo-switchable activity and sustained biocidal release

AU - Pallavicini, Piersandro

AU - Bassi, Barbara

AU - Chirico, Giuseppe

AU - Collini, Maddalena

AU - Dacarro, Giacomo

AU - Fratini, Emiliano

AU - Grisoli, Pietro

AU - Patrini, Maddalena

AU - Sironi, Laura

AU - Taglietti, Angelo

AU - Moritz, Marcel

AU - Sorzabal-Bellido, Ioritz

AU - Susarrey-Arce, Arturo

AU - Latter, Edward

AU - Beckett, Alison J.

AU - Prior, Ian A.

AU - Raval, Rasmita

AU - Diaz Fernandez, Yuri A.

PY - 2017/7/12

Y1 - 2017/7/12

N2 - 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.

AB - 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.

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KW - biocidal release

KW - photo-switchable

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JO - Scientific reports

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

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