synthesis of core-shell-adsorption shell magnetic nanoparticles with interesting biomedical application such as biofilm development inhibition and improvement of antimicrobial activity of various currently used antibiotics modified release pharmaceutical dosage forms based on molecularly imprinted silica networks smart multifunctional drug nanocarriers able to respond to physico-chemical changes in their environment or to external stimuli essential oils extraction, encapsulation, and pharmacological activity; attempted syntheses to complex chemotherapeutic compounds with sterane or taxane carbon atom skeletons by heterodomino cyclization reactions mediated by palladium complexes synthesis of new heterocyclic derivatives able to lead by chemical or electrochemical polymerization to conducting polymers used in chemical sensors and biosensors use of enzyme in electrochemical sensing of biological relevant molecules (dopamine, ascorbic acid) or of organic pollutants from environmental and food matrices (phenols).