Jindrich Matousek

Jindrich Matousek
Jan Evangelista Purkyně University | UJEP · Department of Physics

About

38
Publications
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Introduction
Jindrich Matousek currently works at the Department of Physics, Jan Evangelista Purkyně University. Jindrich does research in Materials Science.
Additional affiliations
January 2004 - present
Jan Evangelista Purkyně University, Faculty of Science
Position
  • Researcher

Publications

Publications (38)
Article
Full-text available
This work deals with the modification of polymeric nanofibers of polyamide 6 (PA6) and polyvinylidene fluoride (PVDF) which were formed by electrospinning process. After the manufacturing process, the polymer nanofibers were exposed to the implantation of 1 MeV H ⁺ ions on a tandem accelerator Tandetron MC 4130. The ion implantation was provided wi...
Article
Insertion of carbon dioxide into structure of organic epoxides leads to a formation of valuable cyclic carbonates and polycarbonates. For the purpose of this process, we report here a series of recyclable organocatalysts with superior activity. Carbosilane dendrimers (1st to 3rd generation) are employed as a support to which periphery ammonium or p...
Article
The search for new antimicrobial materials is necessary due to an increased bacterial resistance in the environment. Natural products such as cinnamon played an important role in this area. Polymeric surfaces with antimicrobial effect are an inexhaustible topic. Due to this, surfaces of polymer foils were activated by UV radiation and then grafted...
Article
Full-text available
The, polyethylene (PE), polypropylene (PP) and polycarbonate (PC) flat substrates were treated by the DBD plasma in air for 1 s, 2 s and 3 s. The adhesion of two types of paints (water based and solvent based) was studied by the pull-off test. The other methods were utilized to gain the information about the surface of the samples. The measurement...
Article
Surfaces of solid polymer foils were modified by chemical methods. Surfaces were firstly activated by Piranha solution and then grafted with selected amino‐compounds (cysteamine, ethylenediamine and chitosan). Next step was established of cobaltacarborane compound. Selected surface properties were studied using various available methods to characte...
Article
Surface of ultra-high-molecular-weight polyethylene (UHMWPE) was modified by chemical methods. Surface was firstly activated by Piranha solution and then grafted with selected amino-compounds (cysteamine, ethylenediamine or chitosan). The next step was grafting of some borane cluster compounds, highly fluorescent borane hydride cluster anti-B18H22...
Article
Full-text available
Polyethylene terephthalate (PET) foils were activated with piranha solution and grafted with selected amino compounds (cysteamine, ethylenediamine or chitosan) and then with borane compounds. Changes in their surface properties after particular modification steps were examined using electrokinetic analysis, X-ray photoelectron spectroscopy (XPS), g...
Article
The surface of polystyrene foil (PS) was chemically modified. Firstly, the surface was pre-treated with Piranha solution. The activated surface was grafted by selected amino-compounds (cysteamine, ethylenediamine or chitosan) and/or subsequently grafted with five members of inorganic metallaboranes. Selected surface properties were studied by using...
Article
New composite materials could reveal attractive capabilities and favourable properties. Here we present a novel layered nanocomposites consisting of inorganic clay (montmorillonite) and cationic carbosilane dendrimers. Comparative study was performed in order to evaluate cationic moieties (ammonium or phosphonium) and various generations of dendrim...
Article
The undemanding water-based synthesis was employed for the preparation of TiO2/CeO2 composites supported on Montmorillonite (MT). The prior plasma treatment of Montmorillonite led to significantly faster dispergation in water during the synthesis. The composites were used as reactive adsorbents against toxic organophosphorus pesticide parathion met...
Article
Polyimide (PI, (C22H10O5N2)n) foil, 8μm thick, was irradiated with 9.6-MeV C4+ and O4+ ions at fluences of 1010-1013cm-2. Compositional and structural changes related to the ion species, ion irradiation fluence and the type of polymer were studied and discussed in connection with energy-loss measurement. The knowledge of these changes of polymers a...
Article
Plasma treatment of montmorillonite has been investigated as a prerequisite for design of functional nanostructures, based on clay minerals. The effect of short-term (20 s) plasma treatment on structure and bonding of montmorillonite has been analyzed using combination of X-ray powder diffraction and infrared spectroscopy. Results showed that dehyd...
Article
Novel organic/inorganic hybrid materials with carbosilane fillers were developed. New carbosilane dendrimers of the first (Dm1) and second (Dm2) generations bearing four and eight cationic ammonium groups on their periphery were synthesized first. Their structure was elucidated by NMR spectroscopy and ESI-HRMS whereas their thermal stability was co...
Article
Present paper deals with the effect of gelatin on the structure, phase composition, and morphology of the electrospun chitosan/PEO nanofibers. Special attention is paid to the surface chemistry, surface structure and surface morphology of nanocomposite fibers, as these parameters are crucial for biomedical applications and for eventual subsequent s...
Article
The polypropylene (PP) powder is used for various purposes. However, its good mechanical properties are accompanied by poor wettability. The PP powder was therefore modified by air plasma in fluidized bed reactor (FBR). Several techniques were employed to characterize the treated samples - XPS for the surface chemistry, electrokinetic analysis for...
Article
In this work we studied surface properties of different modified substrates, polymers, glass and silicates. Polymers and glass were firstly activated by Piranha solutions. Activated surfaces of polymers and glass and non-activated silicates were grafted by amino-compounds and subsequently with borane compounds, one of them being highly fluorescent...
Article
High-intensity lasers generating non-equilibrium plasma, can be employed to accelerate ions in the keV–MeV region, useful for many applications. In the present work, we performed study of ion implantation into different substrates by using a high-intensity laser at the PALS laboratory in Prague. Multi-energy ions generated by plasma from Ta and Ag...
Article
The present work is focused on the implantation of Ta ions into silicon substrates covered by a silicon dioxide layer 50-300 nm thick. The implantation is achieved using sub-nanosecond pulsed laser ablation (1015 W/cm2) with the objective of accelerating non-equilibrium plasma ions. The accelerated Ta ions are implanted into the exposed silicon sub...
Article
This work focuses on the investigation of the photocatalytic activity of the TiO2 thin films (either modified or unmodified by noble metal) and on its stability during 16 months after deposition. RF discharge was used to deposit the TiO2 thin films by PECVD from the mixture of titanium isopropoxide (TTIP) vapors and oxygen. The surface of TiO2 film...
Article
Polyimide (PI), polyetheretherketone (PEEK) and polyethylene terephthalate (PET) foils were implanted with 80 keV Mn+ ions at room temperature at fluencies of 1.0 × 1015–1.0 × 1016 cm−2. Mn depth profiles determined by RBS were compared to SRIM 2012 and TRIDYN simulations. The processes taking place in implanted polymers under the annealing procedu...
Article
We have studied kinetic energy distributions of electrons emitted from the surfaces of polycrystalline Cu bombarded by slow Cs+ ions below the classical threshold. The electron yields at Cs+ impact energies between 50 eV and 500 eV are presented as a function of the inverse Cs+ impact-velocities 1/v. We have analyzed the data in terms of a phenomen...
Article
Full-text available
We report a study on the treatment of flat glass surfaces by ambient air atmospheric pressure plasma, generated by a dielectric barrier discharge of coplanar arrangement of the electrode system—the diffuse coplanar surface barrier discharge (DCSBD). The plasma treatment of glass was performed in both static and dynamic modes. With respect to wettab...
Article
New approach of chemical bath deposition combined with drying of freshly polymerized PANI films in DC high-voltage static electrical field 0.6-2.7 kV/cm has been applied in present work. AFM and SEM microscopy revealed the significant changes of structure and morphology of PANI films, however the most important result of high-voltage treatment was...
Article
The results on plasma treatment of low-carbon steel sheets by Diffuse Coplanar Surface Barrier Discharge are reported. Significant increase of the surface free energy from 29 mJ m(-2) to over 75 mJ m(-2) after the plasma treatment was observed. A detailed X-ray photoelectron spectroscopy study was performed to understand the reasons for increased w...
Article
We report a study on effects of atmospheric pressure plasma treatment of poly(ethylene terephthalate) PET surfaces. The atmospheric pressure plasma was generated using Diffuse Coplanar Surface Barrier Discharge (DCSBD) in ambient air. The changes in wettability of PET surfaces were studied by water contact angle measurement. The surface energy was...
Article
Effects of atmospheric filament-free diffuse plasma in ambient air and oxygen by Diffuse Coplanar Surface Barrier Discharge (DCSBD) on surface of indium tin oxide (ITO) were studied. The DCSBD plasma treatment resulted in significant reduction of water contact angles (even for 1 s long treatment). The decrease can be explained by the chemical chang...
Article
The use of atmospheric plasma generated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) for treatment of poly (methyl methacrylate) (PMMA) sheets is presented. The modified surfaces were characterized by contact angle measurements to determine the free surface energy, atomic force microscope (AFM) to investigate the changes in surface morphol...
Article
Surface modification of poly(ethylene naphthalate) (PEN) films by Diffuse Coplanar Surface Barrier Discharge (DCSBD) in ambient air and nitrogen at atmospheric pressure was studied at short plasma exposure times from 1 s up to 10 s. Chemical changes in the surface composition after the plasma treatments were studied using a high resolution XPS (X-r...
Article
Titanium nanocluster films were prepared using a gas aggregation cluster source based on a planar magnetron following a Haberland concept and using Ar as a working gas. The films were deposited in dependence on the argon pressure inside the cluster source and on the magnetron current. Prior to the analysis, deposited metal nanocluster films were al...
Article
Composite tin/n-hexane plasma polymer films were prepared by means of RF magnetron sputtering of tin target in Ar:n-hexane mixture and characterised by various analytical techniques. Their chemical composition was examined by XPS, current-voltage characteristics were measured, and their structure was investigated by conventional TEM and electron to...
Article
Nanocluster films composed of Ti and TiOx were prepared using a gas aggregation cluster source. The films were first characterized immediately after their preparation and afterwards were allowed to oxidize in air at room temperature for a given time to study their aging. Selected nanocluster films were annealed at 420°C in air for 1h. The prepared...
Article
Thin composite layers (tin in plasma polymer matrix) were prepared in a stainless steel vacuum chamber. An RF powered magnetron with tin target was used to excite the discharge and to activate the monomer species (n-hexane). The gas mixture introduced comprised Ar and n-hexane vapours. The properties of the films and chemical composition were chara...
Article
Full-text available
This paper deals with photocatalytic activity of silver treated TiO2 films. The TiO2 films were deposited on glass substrates by plasma enhanced chemical vapor deposition (PECVD) in a vacuum reactor with radio frequency (RF) low temperature plasma discharge in the mixture of oxygen and titanium isopropoxide vapors (TTIP). The depositions were perfo...
Article
The aim of this paper is investigation of the photocatalytic properties of TiO2 thin films prepared by PECVD with metal nanoparticles built-up on the film surface. The deposition of TiO2 films was carried out in the radio frequency (RF) low-pressure PECVD reactor. Layers were deposited at two different substrate temperatures (40 and 300 °C). The su...
Article
A plasma polymer coating from a hexane/argon mixture is deposited on PE. Protein attachment is investigated after incubation in a HRP-containing buffer solution. Covalent bonding of the attached HRP is demonstrated by means of ATR FT-IR, which shows that the protein peaks persist after washing in heated SDS solution. An enzyme activity assay demons...
Article
In the first part of this paper, stability in the open air and ageing of plasma polymer films is concisely reviewed. Nanocomposite films metal/plasma polymer are shortly discussed. Their ageing is considered. Future work on more complex composites such as Sn or SnO2 /plasma polymer films is outlined.