Stabilization of sputtered gold and silver nanoparticles in PEG colloid solutions

Slepička, Petr; Elashnikov, Roman; Ulbrich, Pavel; Staszek, Marek; Kolská, Zdeňka; Švorčı́k, Václav

doi:10.1007/s11051-014-2850-z

Cited by 56 publications

(42 citation statements)

References 34 publications

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“…The presence of the AuNS and AuNS+PEG on the surface leads to formation of the 'small' shapes, whose amount is higher on the PHB92/PHV8 pre-treated for the 480 s. The dimension of 'small shapes' is in interval 80-400 nm. Compared to the particle size it can be concluded that it has dimension of particle cluster of different sizes, the effect of clustering was observed also by TEM analysis in Slepi ka et al [30]. The most probably this morphology is caused partially by grafting of clustered nanoparticles in combination with ablation effect which leads to the formation of globular structures of treated surface [33].…”

Section: Surface Chemistry and Morphologymentioning

confidence: 87%

“…The process parameters were: the Ar flow 0.3 l s -1 , Ar pressure 10 Pa, electrode area 48 cm 2 , the electrode distance of 50 mm, chamber volume 1000 cm 3 . The plasma activated surfaces of polymer substrates were modified by • AuNS grafting from citrate-stabilised AuNS colloids [28,29] • AuNS grafting from sputtered AuNS in PEG [30].…”

Section: Materials and Modificationmentioning

confidence: 99%

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Surface changes of polymer modified by gold nanoparticles

Kasálková

Stýblová

Slepička

et al. 2017

IJNT

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A limitation of polymers is that the materials lack active sites or substances that can promote cell adhesion, proliferation and tissue recovery. Biopolymers with functional groups or synthesised polymers modified with different methods show many potential applications. The way to create nanostructured surfaces with new functionalities is grafting of the nanoparticles to polymer surfaces. The different uptake behaviours for surface modified nanoparticles can be explained by different charges on the nanoparticles and on the cell membrane. In this work surface changes of the biopolymers substrate modified by gold nanoparticles were studied. Biopolymer foil of polyhydroxybutyrate with 8% polyhydroxyvalerate was treated by plasma and the activated surface was subsequently modified by gold nanoparticles. Modified substrates were analysed by different methods. The elemental composition and the structure of modified polyhydroxybutyrate with 8% polyhydroxyvalerate were studied by X-ray photoelectron spectroscopy (XPS). Surface morphology was determined using atomic force microscopy (AFM). Changes in the surface wettability were determined from the contact angle by goniometry. Cytocompatibility of the pristine and modified samples was assessed in vitro by determining degree of adhesion and proliferation of mouse fibroblasts. It was found that the plasma treatment and subsequent modification with gold nanoparticles leads to dramatic changes in surface morphology, roughness and wettability. Rate of changes of these features strongly dependsSurface changes of polymer modified by gold nanoparticles 121 on the modification parameters. Plasma treatment and subsequent grafting of nanoparticles significantly affects the adhesion and proliferation of cells on the surface of polymer. Biological experiments indicated favourable effect of the presence of the AuNS grafted from the citrate-stabilised AuNS solution on the cells' adhesion, proliferation and viability. . Her main research activities: plasma and laser beam modification of polymers, modification of structure, deposition of metals a carbon layers, nanostructuring of polymers, study of surface physico-chemical properties of materials, and study of wettability, cytocompatibility and cells interaction with polymers.

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Section: Surface Chemistry and Morphologymentioning

confidence: 87%

Section: Materials and Modificationmentioning

confidence: 99%

Surface changes of polymer modified by gold nanoparticles

Kasálková

Stýblová

Slepička

et al. 2017

IJNT

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“…[14] This process (IPS) was developed for biocompatible and biodegradable poly-L-lactic acid (PLLA), but was also tested for several others commercially available polymers, such as poly(methyl methacrylate) or PS. [14] PLA was used since it is considered very often as an interesting material for cell growth due to its excellent biocompatibility and biodegradability, [15,16] also with possibility to add noble metal nanoparticles, [16][17][18] with possibility to improve either cytocompatibility or antimicrobial properties.…”

Section: Introductionmentioning

confidence: 99%

Honeycomb‐like pattern formation on perfluoroethylenepropylene enhanced by plasma treatment

Slepička

Neznalová

Fajstavr

et al. 2019

Plasma Processes & Polymers

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The presented paper is aimed on the plasma activation of perfluoroethylenepropylene for construction of honeycomb‐like structures on its surface by dip‐coating technique complemented with phase separation of biopolymer poly‐l‐lactid acid. Surface activation with plasma significantly improved the possibility of successful HCL pattern formation on perfluoroethylenepropylene polymer compared with pristine foil. The idea of surface pretreatment with plasma allowed us to prepare also pattern with different pore dimension, which may have a significant role for cytocompatibility enhancement and growth of specific cells such as osteoblasts. The unique combination of plasma treatment and dip‐coating technique as simple and cheap procedure was confirmed to be a significant tool for honeycomb‐like structure construction.

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“…Because the size, shape, and stability of these nanoparticles effectively depend on their synthesis methods, seeking an appropriate approach for developing an efficient and safe nanoparticles‐based method is considerable . By some techniques, stable colloidal metal solutions can be prepared ready for use without application of chemical reactions, stabilizers, or reducing agents …”

Section: Introductionmentioning

confidence: 99%

“…[23] By some techniques, stable colloidal metal solutions can be prepared ready for use without application of chemical reactions, stabilizers, or reducing agents. [24] Among different methods, the precipitation technique from homogeneous solutions by using appropriate reducing agents has attracted more attention. This approach offers many capabilities to control the particle characteristics by changing the experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

Rastegarzadeh

Azarkish

Abdali

2015

Surf. Interface Anal.

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a Immobilization of Ag and Au nanoparticles (NPs) synthesized by ascorbic acid on chemically modified glass surface has been studied. 3-[2-(2-Aminoethylamino)ethylamino]propyl-trimethoxysilane (AMPTS), N-(2-aminoethyl)-3-aminopropyltrimethoxysilan, and 3-trimethoxysilyl-1-propanethiol (MSPT) were used as surface modifying agents. To improve immobilization efficiency, the ammonia solution has been used along with the silane reagents, which assisted to adsorb the metal NPs on glass surface. It was found that AMPTS and MSPT have considerable effect on deposition of Ag and AuNPs on glass substrate. The fabricated thin films were characterized by using UV-Vis spectroscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy and subjected to antimicrobial resistance test. The UV-Vis spectra show a distinctive plasmon resonance absorbance peak for thin films of Au and AgNPs prepared with MSPT and AMPTS, respectively. Atomic force microscopy images indicate that formation of Au and AgNPs with spherical morphology after immobilization on the glass substrate and also the dimensions of NPs on the surface appear larger than those observed in the parent colloidal solution. Energy-dispersive X-ray spectroscopy measurements confirmed the presence of silver and gold on the modified glass surface, and elemental composition was measured. The Au and AgNPs thin films show antibacterial activity against gram negative (Escherichia coli) and gram positive (Staphylococcus aureus) bacteria in comparison with a blank sample.

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Stabilization of sputtered gold and silver nanoparticles in PEG colloid solutions

Cited by 56 publications

References 34 publications

Surface changes of polymer modified by gold nanoparticles

Surface changes of polymer modified by gold nanoparticles

Honeycomb‐like pattern formation on perfluoroethylenepropylene enhanced by plasma treatment

Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

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