A new copolymer of 2-methyl-8-hydroxyquinoline gallium acrylate and methyl methacrylate was prepared．The composition and properties of the copolymers were characterized by FT-IR

UV-vis

DSC

TG and fluorescence spectroscopy．A strong blue-green photoluminescence with maximum at 496 nm was observed for the copolymer/CHCl3 solution．Effects of monomer ratio and concentration on photoluminescence properties of the copolymer were investigated．The results showed that the maximum fluorescence intensity was attained when Ga(Mq)2A:MMA was 1:20．While the wavelength of maximum excitation was approximately 263 nm when the concentration of the copolymer was under 2 g/L

but the wavelength of maximum excitation moved to 365 nm after the concentration was above 4 g/L．The copolymer is soluble in chloroform

acetone and DMF at 25℃

so it can be used to prepare electroluminescent device by spin-coat technology．DSC analysis showed that Tg of the copolymer was 35 K higher than that of PMMA

and the results of TG indicated that the decomposition temperature of PMMA was 140℃

but that of the copolymer exceeded 250℃

so the copolymer exhibited better thermal stability than PMMA．