FIELD: physics.
SUBSTANCE: described is a transparent optical functional coating distinguished by that, in certain parts of the visible spectrum, especially in the interval which includes wavelengths of at least 50 nm, preferably at least 100 nm, the coating has refraction index n less than 1.3 and contains an electrically conducting polymer which contains polythiophene with repeating structural units of general formula (I) in which A represents an alkylene residue with 1-5 carbon atoms. Also described is a method of preparing said transparent optical functional coating on a substrate, distinguished by that, the coating which contains an electrically conducting polymer is made such that, starting materials for synthesis of the electrically conducting polymer and thiophene of general formula (II), in which A represents an alkylene residue with 1-5 carbon atoms, are deposited on the substrate in form of solutions, and chemical oxidative polymerisation takes place in the presence of an oxidising agent. Described is use of the said transparent optical functional coating as antiglare or infrared radiation reflecting coating on surfaces, coating layer on effective pigments or cladding of optical fibre.
EFFECT: obtaining optical functional coating capable of replacing inorganic functional coatings, with similar or better properties than inorganic coatings.
11 cl, 6 dwg, 1 tbl, 7 ex
