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| MULCOMAT – Multifunkčné kompozitné materiály pre cielenú detekciu, adsorpciu a dekontamináciu nebezpečných organických molekúl | |
| Multifunctional composite materials for detection, adsorption and decontamination of hazardous organic molecules | |
| Program: | SRDA |
| Project leader: | Mgr. Jankovič Ľuboš, PhD. |
| Annotation: | The proposed project is focused on the development of new generation of organo-modified clay minerals using poly(2-alkenyl-2-oxazolines) as representatives of non-ionic, but still highly polar polymers. We expect that organo-modification of montmorillonites using this type of polymers will lead to organoclay materials with more efficient intercalation and thus, with higher adsorption efficiency toward various hazardous organic molecules. The presence of poly(2-alkenyl-2-oxazolines) and poly(2-alkenyl-2-oxazines) in the gallery of clay minerals will ensure catalytic decomposition of hazardous organic molecules. In our case, we use for the evaluation of adsorption and hydrolytic decomposition organophosphate as organic compounds widely used as pesticides and they habe been already used as chemical warfare agents. The combination of improved adsorption and accelerated hydrolytic decomposition of studied organophosphates represents the main innovative aspect of the project and pave an avenue to montmorillonite-based nanoreactors for dephosphorylation reactions of neurotoxic organophosphate agents. Here, we present metal-free catalytic systems that are potentially usable for human and environmental protection. Moreover, poly(2-alkenyl-2-oxazolines) and poly(2-alkenyl-2-oxazines) represent new groups of polymers with reactive pendant 2-oxazoline and 2-oxazine groups, respectively, capable to provide post-polymerization reactions with carboxylic groups. In our case, 2-oxazoline groups will be used for the structural stabilization during melt mixing with carboxylic units containing polymer matrices. |
| Duration: | 1.7.2024 – 30.6.2028 |
| Photomat – Fotofunkčné hybridné materiály organických luminofórov a nanočastíc vrstevnatých silikátov | |
| Photofunctional hybrid materials of organic luminophores and nanoparticles of layered silicates | |
| Program: | SRDA |
| Project leader: | Mgr. Boháč Peter, PhD. |
| Annotation: | The topic of the project is based on modern trends in materials research, and the experience and recent results of the project team. It was discovered that adsorption, intercalation, or molecular aggregation of specific types of organic molecules can significantly increase their photoactivity, manifesting as an increase in luminescence. The strategy of increasing photoactivity will be the main objective of the project. Each of the phenomena should be applied depending on the molecular structure of the luminophores. The project will focus on hybrids of photoactive organic luminophores and layered silicates. Structurally optimized S,N-heteroaromatic dyes and their ion metal complexes will be prepared within the project. Heteroaromatic systems will be modified by cationic groups or their functionalization with cationic metal ions including Ru(II), Ir(III), Au(III), and others to increase the compatibility of these chromophores with silicates and achieve the required photophysical properties. Appropriate selection of the layered carrier, choice of chemical modification, and suitable conditions for the synthesis of hybrid systems will be the key factors to achieve the project objectives. In addition to improving the properties of molecules, other goals will be to prepare complex functional materials with efficient use of light energy. Here, the organization of molecules in nanostructural hybrids will play a key role to achieve optimal photophysical interactions aimed at specific functionality. In addition to luminescent properties, the aim will be to prepare hybrids with mainly photosensitizing properties. The last step will be the use of nanoparticles for the modification of technical polymers by the formation of nanocomposites. The objective will be obtaining surfaces with photosensitizing and photodisinfection properties, which will be tested for the growth of microbial biofilms. |
| Duration: | 1.7.2023 – 30.6.2026 |
| Potenciál vrstevnatých aluminosilikátov ako excelentných nosičov polykatiónov: dizajnovanie nových kompozitných nanomateriálov | |
| Potential of layered aluminosilicates as excellent guests to accommodate polymeric cations: design of new composite materials | |
| Program: | VEGA |
| Project leader: | Ing. Pálková Helena, PhD. |
| Annotation: | The project is aimed at the preparation of composite materials based on layered aluminosilicates as suitablecarriers for different types of organic polycations, possessing properties interesting for various applications. Thevariability in the chemical composition of the selected layered materials in connection with the diversity of themolecular structures and properties of polymeric cations and copolymers opens up wide opportunities towardsthe preparation of well-defined systems. Careful selection of the inorganic carries and polycations is an essentialstep to achieve their mutual compatibility resulting not only in preserving but primarily in improving the keyproperties of the prepared composites. Therefore, the synthesis conditions (e.g. pH) and the addition of anothercomponent to the systems (fluorescent dyes, metal nanoparticles) will be evaluated. The cytotoxicity test topredict biocompatibility of the materials, photoactivity, catalytic and adsorption efficiency will be assessed as well. |
| Duration: | 1.1.2021 – 31.12.2024 |