An automated setup for production of nanodimensional coatings by the polyelectrolyte self-assembly method

Портнов, С. А.; Yashchenok, Alexey M.; Gubskii, A. S.; Gorin, Dmitry A.; Neveshkin, A. A.; Klimov, B. N.; Nefedov, Alexei; Lomova, Maria V.

doi:10.1134/s0020441206060157

Cited by 19 publications

(18 citation statements)

References 15 publications

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“…Formation of the layer by layer assembly using this setup has already been reported. 30 The following ingredients were used: 1 mg ml À1 PArg and DS solutions in 0. 5 /Au10, PEI/(Au20/PArg) 5 /Au20 were prepared on the surface of the quartz crystal resonators.…”

Section: Fabrication Of Planar Lbl Assemblies and Quartz Crystal Micrmentioning

confidence: 99%

Magnetic/gold nanoparticle functionalized biocompatible microcapsules with sensitivity to laser irradiation

Gorin

Портнов

Inozemtseva

et al. 2008

Phys. Chem. Chem. Phys.

125

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Nanocomposite microcapsules with both gold and magnetite nanoparticles in the shell were prepared in a layer-by-layer procedure using biocompatible polyelectrolytes and nanoparticles. The process of a nanocomposite multilayer formation was investigated using a quartz crystal microbalance (QCM). In addition, nanocomposite microcapsules were characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). It is found that the amount of adsorbed nanoparticles is similar for nanoparticles of various sizes, while the concentration of gold nanoparticles in the shell is higher for smaller nanoparticles. Adsorption of gold nanoparticles is found to be more effective than adsorption of magnetic nanoparticles. Multifunctionality of microcapsules is manifested by dual: magnetic and optical responses. Iron oxide nanoparticles embedded in the microcapsule shell allowed for control over capsules positioning by external magnetic fields. Furthermore, the nanocomposite microcapsules could be opened by laser irradiation; these results are of interest for medical and biological applications.

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Section: Fabrication Of Planar Lbl Assemblies and Quartz Crystal Micrmentioning

confidence: 99%

Magnetic/gold nanoparticle functionalized biocompatible microcapsules with sensitivity to laser irradiation

Gorin

Портнов

Inozemtseva

et al. 2008

Phys. Chem. Chem. Phys.

125

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“…PAH and Fe 3 O 4 nanoparticles were alternatively deposited onto silicon wafers in a com puter assisted Poliion 1M device (Saratov, Russia) [18]. The nanocomposite films deposited onto single crystal silicon wafers had the following composition: PEI/(Fe 3 O 4 /PAH) N , where N = 6, 11, 16.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, the properties of nanocomposites are likely to depend on the choice of a polymer matrix and the shape, size, and chemical composition of nanoparticles. In [18,19], we showed that the thickness, refractive index, and surface rough ness of a nanocomposite coating increase with the number of magnetite nanoparticle layers.…”

Section: Introductionmentioning

confidence: 99%

“…Polarization angles Ψ and Δ were measured with an LEF 3M null ellipsometer (wavelength 632.8 nm) in air at angles of incidence of 60° and 70°. Refractive index n and film thickness δ were determined from experimentally measured polarization angles Ψ and Δ using the sin gle layer isotropic nonabsorbing film-absorbing iso tropic substrate model [18,25].…”

Section: Experimental Techniquesmentioning

confidence: 99%

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Surface morphology and optical and magnetic properties of polyelectrolyte/magnetite nanoparticles nanofilms

Gorin¹,

Yashchenok²,

Koksharov

et al. 2009

Tech. Phys.

Self Cite

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Abstract-Polyelectrolyte/iron oxide nanoparticles composite nanocoatings are fabricated by polyionic assembly. They are characterized by atomic force microscopy, electron magnetic resonance, ellipsometry, and secondary ion mass spectrometry. The results obtained indicate that the number of magnetite nanoparticle lay ers in a film is related to its refractive index, thickness, and surface roughness. The electron magnetic resonance signal intensity is found to nonlinearly depend on the number of magnetic nanoparticle layers in a film.

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“…In order to sensors fabrication, the LbL layers have been prepared of proteins, nucleic acids and polysaccharides (Siqueira et al, 2010;Liu et al, 2008). Deposition of a large number of layers can be performed by using a mechanical robot (Portnov et al, 2006) or a simple fluidic system. The main drawbacks of LbL deposition are sensitivity of the receptor containing multilayer to variations of ionic strength, generally leading to destabilization of an assembly and an influence of the drying process on the multilayer structure (Lourenco et al, 2007).…”

Section: Substrate Polycation Washingmentioning

confidence: 99%

Hybrid Film Biosensor for Phenolic Compounds Detection

Cabaj¹,

Jadwiga²

2011

Environmental Biosensors

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An automated setup for production of nanodimensional coatings by the polyelectrolyte self-assembly method

Cited by 19 publications

References 15 publications

Magnetic/gold nanoparticle functionalized biocompatible microcapsules with sensitivity to laser irradiation

Magnetic/gold nanoparticle functionalized biocompatible microcapsules with sensitivity to laser irradiation

Surface morphology and optical and magnetic properties of polyelectrolyte/magnetite nanoparticles nanofilms

Hybrid Film Biosensor for Phenolic Compounds Detection

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