Water-Soluble Luminescent Lanthanide Complexes Based on 2-Methacryloyloxyethyleniminodiacetic Acid Copolymers

2-Methacryloyloxyethyleniminodiacetic acid and its new water-soluble copolymers with N-vinylpyrrolidone have been synthesized. The interaction of the copolymers in dilute aqueous solutions with lanthanide ions has been studied. The study has revealed the 25-fold amplification of Eu3+ luminescence in the polymer complex has been revealed as compared with a low-molecular-weight analog upon the formation of both heteroligand complexes with thenoyltrifluoroacetone and Eu3+ and Gd3+ heterometallic (bimetallic) complexes.