Static Light Scattering (SLS) was used for characterization of the fluorescent ESIPT copolymers of PMMA - Benzazole dyes in solution with chloroform (CHCl(3)) and tetrahydrofuran (THF) were studied. The results show that macromolecular parameters and copolymers architectures in solution are not changing in relation to those of PMMA. In this way, the incorporation of Benzazole dyes in PMMA does not affect the final polymer properties and conformations in the investigated dilution regime.