The efficient photoluminescent polymers containing crown-substituted fluorene and diphenyl anthracene units were synthesized by aromatic nucleophilic substitution reaction. The light-emitting polymers contain benzo-15-crown-5 groups at the C-9 position of fluorene and diphenyl anthracene-emitting segments in the main chain. Introduction of a crown ether group in polymer backbone leads to its high thermal stability at varying temperature ranges and good solubility in common organic solvents such as CH2Cl2, CHCl3, THF, and toluene. The novel combination of pendant crown ether and anthracene moiety enhanced the electroluminescence of polymers. The synthesized polymers were effectively characterized by elemental analyses, GPC, TGA, FTIR, H-1, C-13 NMR spectroscopy and UV-Visible spectroscopy. The electrochemical measurements and optical properties of the polymers were also studied. The obtained polymers showed good photoluminescence and electroluminescence properties with blue fluorescence.