Supramolecular self-organizing functional materials possess specific physical and biological properties that can in some cases be controlled by external stimuli (temperature, pH, UV radiation). They are recognized as an excellent platform for application in various fields, including sensor development, biomaterials, tissue engineering and drug delivery systems. Hydro- and organogels are biocompatible, biodegradable and non-toxic materials that are suitable for biomedical use. Combining supramolecular organizations with various inorganic or organic compounds, nanocomposite materials with improved physical and biological properties are formed. Self-organizations of low molecular weight organic molecules (LMWG) based on small peptides are well described in the literature and their biocompatibility has already been shown. In the framework of this thesis, tripeptide hydrogelators Ac-L-Phe-L-Phe-L-Ala-NH2, Ac-L-Phe-L-Phe-L-Ala-OMe and 4-picolylamide derivatives of L-phenylalanine·HCl and D-phenylglycine·HCl were synthesized. These gels were tested for their gelling properties before and after the addition of polymers of poly (ethylene glycol) (PEG) and poly (vinyl alcohol) (PVA). 4-Picolylamide derivative of D-phenylglycine·HCl with the addition of PVA showed the best gelling properties. Preliminary testing of the release of doxorubicin (DOX) from the gel with the addition of PVA and without PVA has been tested. The results indicate that PVA affects the gelling of 4-picolylamide derivative of D-phenylglycine·HCl, accelerating it and reducing the critical concentration of the gelator while doxorubicin is released more rapidly from the gel containing PVA.