Fabrication of photothermally active poly(vinyl alcohol) films with gold nanostars for antibacterial applications

Borzenkov, Mykola; Moros, María; Tortiglione, Claudia; Bertoldi, Serena; Contessi, Nicola; Farè, Silvia; Taglietti, Angelo; D’Agostino, Agnese; Pallavicini, Piersandro; Collini, Maddalena; Chirico, Giuseppe

doi:10.3762/bjnano.9.193

Cited by 33 publications

(37 citation statements)

References 26 publications

(45 reference statements)

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“…The laser-induced heating of gold nanoparticles embedded in an injectable silk protein hydrogel was one of the first examples that used this approach [65]. The NIR laser irradiation at 528 nm for 15 min (450 mW) Poly(vinyl alcohol) (PVA) films cross-linked with citric acid loaded with highly efficient photothermal gold nanostars were also fabricated [66]. The resulting films demonstrated a pronounced photothermal effect under NIR irradiation in the 730-1064 nm wavelength range.…”

Section: Polymeric Nanocomposites Containing Photothermally Active Gomentioning

confidence: 99%

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Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Borzenkov¹,

Pallavicini²,

Taglietti³

et al. 2020

Beilstein J. Nanotechnol.

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Bacterial contamination is a severe issue that affects medical devices, hospital tools and surfaces. When microorganisms adhere to a surface (e.g., medical devices or implants) they can develop into a biofilm, thereby becoming more resistant to conventional biocides and disinfectants. Nanoparticles can be used as an antibacterial agent in medical instruments or as a protective coating in implantable devices. In particular, attention is being drawn to photothermally active nanoparticles that are capable of converting absorbed light into heat. These nanoparticles can efficiently eradicate bacteria and biofilms upon light activation (predominantly near the infrared to near-infrared spectral region) due a rapid and pronounced local temperature increase. By using this approach new, protective, antibacterial surfaces and materials can be developed that can be remotely activated on demand. In this review, we summarize the state-of-the art regarding the application of various photothermally active nanoparticles and their corresponding nanocomposites for the light-triggered eradication of bacteria and biofilms.

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Section: Polymeric Nanocomposites Containing Photothermally Active Gomentioning

confidence: 99%

“…Poly(vinyl alcohol) (PVA) films cross-linked with citric acid loaded with highly efficient photothermal gold nanostars were also fabricated [ 66 ]. The resulting films demonstrated a pronounced photothermal effect under NIR irradiation in the 730–1064 nm wavelength range.…”

Section: Reviewmentioning

confidence: 99%

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Borzenkov¹,

Pallavicini²,

Taglietti³

et al. 2020

Beilstein J. Nanotechnol.

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“…Photothermally active monolayers of gold nanostars on glass displayed antibacterial and antibiofilm activity upon NIR laser irradiation , . To introduce the remotely activated by NIR light nanocomposite materials with antibacterial properties, PVA films cross‐linked with citric acid containing highly photothermally efficient gold nanostars were fabricated and their antibacterial properties were studied . It was shown that GNS coated with SH‐PEG‐COOH can act as additional cross‐linking centers.…”

Section: Photothermally Active Polymeric Nanocomposite Materialsmentioning

confidence: 99%

“…T‐test against non‐irradiated samples was performed (* p < 0.05). Adapted from reference under the terms of the creative commons attribution license.…”

Section: Photothermally Active Polymeric Nanocomposite Materialsmentioning

confidence: 99%

Photothermally Active Inorganic Nanoparticles: from Colloidal Solutions to Photothermally Active Printed Surfaces and Polymeric Nanocomposite Materials

2019

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Nanoparticles with absorption in Near-Infrared (NIR) region and subsequent efficient release of heat, are receiving great attention due to wide opportunities of applications in different fields including biotechnology and nanomedicine. However, the colloidal solutions of such nanoparticles may have limitations in effective application connected with long-term stability of nanoparticle solutions and possible re-usability. Therefore, this minireview focuses on the state-of-the art of research and application of photothermally active nanoparticles

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“…Beneficial properties of gold, such as good biocompatibility, and excellent resistance to oxidation and acids, promote the applicability of gold nanoparticles in nanomedicine or antibacterial applications [49,50]. On the PVA films containing five-branched gold nanostars (synthesized via a seed-growth method), the eradication of bacteria growth was determined after a laser-induced increase in surface temperature [51]. Using combination of poly(ethylene glycol) (PEG) and Au nanoparticles in hydrogels increased the wound healing efficiency due to the re-epithelization effect and collagen formation [52].…”

Section: Introductionmentioning

confidence: 99%

Plasma-Activated Polyvinyl Alcohol Foils for Cell Growth

et al. 2020

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Hydrogels, and not only natural polysaccharide hydrogels, are substances capable of absorbing large amounts of water and physiological fluids. In this study, we set out to optimize the process for preparing polyvinyl alcohol (PVA) hydrogels. Subsequently, we doped PVA foils with cellulose powder, with poly(ethylene glycol) (PEG) or with gold nanoparticles in PEG colloid solutions (Au). The foils were then modified in a plasma discharge to improve their biocompatibility. The properties of PVA foils were studied by various analytical methods. The use of a suitable dopant can significantly affect the surface wettability, the roughness, the morphology and the mechanical properties of the material. Plasma treatment of PVA leads to ultraviolet light-induced crosslinking and decreasing water absorption. At the same time, this treatment significantly improves the cytocompatibility of the polymer, which is manifested by enhanced growth of human adipose-derived stem cells. This positive effect on the cell behavior was most pronounced on PVA foils doped with PEG or with Au. This modification of PVA therefore seems to be most suitable for the use of this polymer as a cell carrier for tissue engineering, wound healing and other regenerative applications.

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Fabrication of photothermally active poly(vinyl alcohol) films with gold nanostars for antibacterial applications

Cited by 33 publications

References 26 publications

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Photothermally Active Inorganic Nanoparticles: from Colloidal Solutions to Photothermally Active Printed Surfaces and Polymeric Nanocomposite Materials

Plasma-Activated Polyvinyl Alcohol Foils for Cell Growth

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