Nanostructured silver coatings on polyimide and their antibacterial response

Siegel, Jakub; Polívková, Markéta; Staszek, Marek; Kolářová, Kateřina; Rimpelová, Silvie; Švorčı́k, Václav

doi:10.1016/j.matlet.2015.01.050

Cited by 34 publications

(26 citation statements)

References 13 publications

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“…Since it is well‐known that the antibacterial effect is due to the presence of silver on the specimen's surface, we investigated the elemental composition of the layers by XPS. The results are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Silver has already proved itself as a powerful inorganic compound, and can, if used correctly, prevent infection. As a broad‐spectrum agent, it kills a wide range of microorganisms in low levels without associated toxicity . The antibacterial power of silver nanoparticles has been widely documented, although the exact mechanism causing it is not known.…”

Section: Discussionmentioning

confidence: 99%

“…They act as antioxidants, blocking cellular processes, and leading to bacterial cell death. The antibacterial properties of Ag nanoparticles have already been determined against Gram‐positive Staphylococcus aureus and Gram‐negative Escherichia coli and Pseudomonas aeruginosa bacteria and Candida albicans . Ocular prostheses have been used, made entirely of polymer (polymethyl methacrylate – PMMA) mixed with silver (300–700 ppm), to achieve antibacterial and antifungal properties, but they lack the necessary efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Application of Silver Antibacterial and Antifungal Nanolayers for Ocular Prostheses Coating

Koev

Donkov

Stankova

et al. 2019

Physica Status Solidi (a)

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The paper reports on antibacterial and antifungal properties of Ag-doped Al 2 O 3 nanolayers deposited by RF reactive magnetron sputtering on glass ocular prostheses. The study is provoked by the need of suppressing the infections caused by pathogenic microorganisms following the placement of ocular prostheses. This brings about the idea of forming protective coatings with antibacterial and antifungal properties on the prostheses. The surface elemental composition and the morphological characteristics of the coatings are investigated by XPS and SEM measurements. Further, the microbiological studies are conducted to establish the antibacterial and antifungal action of the nanocomposite Ag/Al 2 O 3 layers against Gram-positive and -negative bacteria, and Candida albicans. The strongest action of the layers is found against Pseudomonas aeruginosa À full inactivation after 2 h; Escherichia coli and Candida albicansfull inactivation after 5 h; Staphylococcus aureus À full inactivation after 24 h. The experimental findings suggest a very promising application of such antibacterial and antifungal Ag/Al 2 O 3 nanolayers regarding the reduction of eye infections when implanting ocular prostheses.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Silver Antibacterial and Antifungal Nanolayers for Ocular Prostheses Coating

Koev

Donkov

Stankova

et al. 2019

Physica Status Solidi (a)

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“…This chapter is devoted to the very contemporary themes of polymer nano-metallization, the process giving the polymers exceptional properties in biological applications, namely the bactericidal action while preserving sufficiently low cytotoxicity level [1][2][3][4][5][6][7][8], as well as to novel techniques for metal nanoparticle (NP) synthesis providing antibacterial, cell-conform entities [9,10]. So far many efforts has been spent to synthesize the next generation antimicrobial materials applicable in the health-care industry in response to increasing resistance of the pathogens to conventional antibiotics [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Structure-Dependent Biological Response of Noble Metals: From Nanoparticles, Through Nanowires to Nanolayers

Siegel¹,

Staszek²,

Polívková³

et al. 2018

Noble and Precious Metals - Properties, Nanoscale Effects and Applications

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Noble metals in their diverse nanoforms bring revolution to many fields of science and technology, as they provide unique properties over their bulk counterparts. Thanks to these completely unprecedented properties, commercial sphere pressure is growing to use them in everyday life. Unfortunately, one of the issues that are subject to dramatic changes is the reactivity of these structures. This may have often fatal consequences to the living organisms. Due to the fact that the mechanism of action of metal nanostructures on living organisms is not yet fully elucidated even in the case of the most studied noble metals such as gold and silver, it is necessary to continue intensively in their research, characterization and categorization. The main prerequisite for the undistorted study of interactions of nanostructures with living organisms is the use of suitable methods of their preparation. Within this context, this chapter attempts to summarize current knowledge form the field of synthesis of metal nanoparticles, layers, wires, and other nanostructures, especially regarding novel techniques of their preparation and extend them by our own results in this area, in the context of their biological properties. More specifically, antibacterial efficacy and potential cytotoxicity of those structures are thoroughly addressed.

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“…Silver coatings have been used in the creation of innovative materials and devices with applications in solar cells, OLEDs, antimicrobial resistant coatings, tribology, conductivity and catalysis, The exploitation of silver is due to its excellent physicochemical properties: high electrical conductivity, high resistance to corrosion and oxidation, ductility, and considerable antiwear abilities. In particular, metallic silver has been investigated as a solid lubrication material in films, in composites,, and in the form of additives .…”

Section: Introductionmentioning

confidence: 99%

Silver(I) Bis(pyrazolyl)methane Complexes and Their Implementation as Precursors for Metallic Silver Deposition

et al. 2015

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The following Ag I bis(pyrazolyl)methane complexes with BF 4 -/NO 3 as counteranions were synthesized and characterized:[Ag(L pzH )] 2 (NO 3 ) 2 (1), [Ag(L pzMe )] 2 (NO 3 ) 2 (2), [Ag(L pzH )] n (BF 4 ) n (3), and [Ag(L pzMe )] n (BF 4 ) n (4) [L pzH = bis(pyrazolyl)methane; L pzMe = bis(3,5-dimethylpyrazolyl)methane]. These complexes were prepared to identify optimum precursors for the thermolytic deposition of metallic silver. The crystal structures of 1 and 2 show that the complexes are dinuclear and that the NO 3 anions interact with the metals. In contrast, 3 is polymeric and the BF 4 does not interact with the metal. When crystallizing 1-4 in non-anhydrous solvents, the presence of adventitious water further reacts with 3 and 4 (but not with 1 and 2) to yield dinuclear complexes [Ag(L pzH )(H 2 O) 2 ] 2 (BF 4 ) 2[a]

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Nanostructured silver coatings on polyimide and their antibacterial response

Cited by 34 publications

References 13 publications

Application of Silver Antibacterial and Antifungal Nanolayers for Ocular Prostheses Coating

Application of Silver Antibacterial and Antifungal Nanolayers for Ocular Prostheses Coating

Structure-Dependent Biological Response of Noble Metals: From Nanoparticles, Through Nanowires to Nanolayers

Silver(I) Bis(pyrazolyl)methane Complexes and Their Implementation as Precursors for Metallic Silver Deposition

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