Thin luminofore layers of nanocomposites (NC) on the base of copolymer from styrene and butylmethacrylate (1:1) (SBMA) and of organic luminophores 5-(4-dimethylamino-benzylidene)-pyrimidine2,4,6-trione (PI) or 3-(4-dimethylamino-phenyl)-1-(4-isothiocyanato-phenyl)-propenone (PII) are obtained. The dimensions of PI and PII particles are less than 100 nm and they are uniformly distributed in polymer matrices. The absorption of NC reveals absorption bands with maxima at 470, 432 and 340 nm for PI-SBMA and 443 nm for PII-SBMA. The photoluminescence (PL) of NC reveals an intensive wide band at 532 nm for PI-SBMA and 5 bands at 450, 490, 518, 650 and 700 nm for PII-SBMA.