Veronika Máková

Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec · Nanochemistry

Two spherical nanoparticulate materials were prepared by base-catalyzed sol-gel hydrolysis/self-condensation of the bis- Cinchona alkaloid-phthalazine-based bridged bis(triethoxysilanes). For the purpose of comparing the catalytic properties, two compact materials were also prepared...

Nanofibers bring everyday challenges to modern material science. Different types of fibrous materials made of organic and/or inorganic components are well known worldwide and find applications in various fields of industry and everyday life, covering optoelectronics, energetics, sensors, catalysis, filtration and/or medicine. However, their combina...

This paper deals with the issue of additive technologies using glass. At the beginning, our research dealt with a review of the current state and specification of potentially interesting methods and solutions. At present, this technology is being actively developed and studied in glass research. However, as the project started at the Department of...

The bridged bis(triethoxysilane) possessing the bis-cinchonine-phthalazine bridging organic unit was synthesized and then subjected to the sol-gel process leading to two hybrid organosilica materials. Both solid materials were characterized by ¹³C and ²⁹Si CP/MAS NMR, FTIR, SEM, TEM, TGA and gas sorption analyses, and were successfully used as hete...

Nanomaterials together with nanotechnologies bring everyday challenges to modern material science and allow scientists worldwide to develop completely new types of unique materials having extraordinary properties. Although interest in hybrid organic-inorganic organosilane fibrous nanomaterials is rising, there is no review covering and completing t...

Different forms of unmodified and modified Poly(ethylene glycols) (PEGs) are widely used as antifouling and antibacterial agents for biomedical industries and Nylon 6 is one of the polymers used for biomedical textiles. Our recent study focused on an efficient approach to PEG immobilization on a reduced Nylon 6 surface via N,N'-disuccinimidyl carbo...

Despite the extensive literature on organosilane hybrid materials, there are very few reports on the preparation of purely organosilane non-woven fibrous mats. Nevertheless, their use in various application fields may be of great importance regarding the global issue of polymer fibers and the toxicity of other compounds used so far in the composite...

Hospital-acquired infections (HAI) caused by pathogenic bacteria such as Pseudomonas aeruginosa and Staphylococcus aureus adversely affect public health due to their colonization and subsequent formation of a biofilm on medical devices. Various functionalized polymers including polyamides are commonly used in the biomedical industry aiming to resis...

Our study was focused on the synthesis of selective mesoporous silica nanoparticles (MSNs: MCM-41, MCM-48, SBA-15, PHTS, MCF) that are widely studied for drug delivery. The resulting mesoporous surfaces were conveniently prepared making use of verified synthetic procedures. The MSNs thus obtained were characterized by Brunauer-Emmett-Teller (BET) a...

Biofilm formation, caused particularly by pathogenic bacteria like methicillin-resistant Staphylococcus aureus (MRSA) on medical devices, is imposing threat to public health. There is thus an ever growing demand for designing materials that are both cytocompatible and resistant to biofilm formation as well as bacterial infections. Surface functiona...

Our study is focused on an efficient reduction of amide functional groups to secondary amine on Nylon 6 surface with borane–tetrahydrofuran (BH3–THF) complex, followed by N-alkylation with benzyl chloride (C6H5CH2Cl) which has been successfully used as a model system for further grafting of the reduced Nylon 6 surface by poly(ethylene glycol) methy...

Photo curable organic-inorganic monomers are currently generating much interest in many research groups worldwide due to their unique properties leading to a wide range of applications including electronics, energetics, medicine, etc. One of them, 3-trimethoxysilylpropylmethacrylate belongs to the class of such monomers having a wide range of relat...

Polypyrrole-coated polyethylene terephthalate is very attractive for various applications as electrically conductive fiber. This paper investigates the importance of polyester pre-treatment on the quality of the polypyrrole coating and its conductivity efficiency. The results showed nucleophilic pre-treatments by Grignard reagents resulting in the...

Poly(ethylene terephthalate)—PET, is one of the most common polyesters, widely used in biomedical applications ranging from catheters to stents, vascular grafts, heart valves, sutures, and scaffolds. PET surface modification is necessary to impart desired properties for biomedical applications, making the polymer biocompatible, noncytotoxic and ant...

Healthcare-acquired infections by pathogenic microorganisms including viruses represent significant health concern worldwide. Next to direct transmission from person-to-person also indirect transmission from contaminated surfaces is well documented and important route of infections. Here, we tested antiviral properties of hybrid coating containing...

Complexation ability of simple chloro- and cyanoacetanilides has been determined using IR as well as 1H-NMR titration experiments. Only 1:1 anion–amide complex stoichiometry has been found. The structures of several free anilides and their complexes with bromide anion have been studied by DFT calculation.

The search for new solutions to medical problems has led to a considerable development in the application of nanotechnologies to medicine. Silanization of substrates with hydroxyl (-OH), amino (-NH2) or carboxy (-COOH) functional groups on the surface of nanofibers is a process currently being used in the engineering of biocompatible nanomaterials...

Epidemics spread many types of pathogenic bacterial strains, especially strains of MRSA (Methicillin-resistant Staphylococcus aureus), which are being increasingly reported in many geographical areas [1]. This is becoming to be a serious global problem, particularly in hospitals. Not only are antibiotics proving to be increasingly ineffective but a...

Silanization of substrates with Si-OH groups on the surface is one of the methods currently used in engineering of special materials. Such modification allows e.g. immobilisation of drugs on different surfaces. In this study, tetracycline was successfully immobilised through silanization reactions on silica nanofibres with Si-OH groups. The immobil...

Hybrid coatings were prepared by sol-gel method from sols on the base of TMSPM ((3-(trimethoxysilyl)propyl methacrylate) – TEOS (tetraethylorthosilicate) on glass, corundum, polished steel and subsequently heat treated at 90°C/3 h or at 150°C/3 h. The morphology and microstructure of hybrid coatings were described by SEM and AFM. Properties like re...

AbSTrACT The aim of our work was to investigate properties of TiO x layers, especially the photocatalytic activity and antibacterial effects. Thin films were deposited by DC magnetron sputtering at low temperature. Four types of architecture were achieved by Glancing Angle Deposition Methods and the photocatalytic activity and antibacterial test we...

This study focused on the dyeing of glass fibres by colour layers created by the sol gel method. Glass fibres are used as a typical example of fibres with non-ideal dyeing properties. Glass and similar dyes are rigid, the internal fibre structure is non-porous and the glass transition temperature is very high. The sol gel method is used for the fix...