ADHESIVE INTERACTION OF SUPRAMOLECULARLY ORGANIZED SYSTEMS WITH "BLUE" CARBON DOTS WITH HYDROPHOBIC AND HYDROPHILIC SURFACES

Ordered self-organizing lyotropic liquid crystals (LLC) are widely used in biomedicine due to their ability to encapsulate biomaterials of various chemical natures: hydrophobic and hydrophilic substrates. The creation of LLC complexes with carbon or quantum dots makes it possible to obtain systems with combined functions. Carbon dots, which are semiconductor nanomaterials, have unique luminescent properties and can be embedded in lyotropic mesophases to create hybrid systems and their practical use as biosensors, medical imaging, and theranostics. It is important to note that among the basic physico-chemical characteristics of a surface based on polymeric materials, the main focus is on wettability, adhesive interaction, friction and permeability. It is known that the wettability of hybrid systems is determined by surface tension, which is very important in the process of their interaction with the environment, for example: the surface of capillaries, tissues of blood vessel walls, skin, polymer tubes and surface coatings of medical equipment elements. This paper presents the results of wetting gels and lyomesophases with C- dots of model hydrophobic and hydrophilic surfaces: glass, nylon, polydimethylsiloxane and polytetrafluoroethylene. It has been found that low-viscosity gels wet these surfaces better than more viscous LC phases, and the adhesion of a hybrid sample doped with carbon dots in contact with glass and a membrane has the same order of magnitude for similar oligoethylene oxide-based lyomesophases. The adhesive characteristics of LLC and gel-like systems obtained in the study may be useful in the development of drug delivery methods for diagnostic and therapeutic nanosystems with improved functionality.