PHOTODECOMPOSITION OF EU3-ACID( COMPLEXES WITH MACROMOLECULAR LIGANDSBASED ON ACRYLIC)

The spectroluminescent and photochemical properties of Eu3+ complexes with copolymers of acrylic acid and alkyl methacrylates were studied. It was found that the photochemical behavior of the macromolecular com plexes differs significantly from that of the low-molecular analogs: i n the course of photodecomposition the luminescence intensity of Eu3noticeably increases rather than diminishes. The efficiency of the lum inescence build up of Eu3+ depends on the composition and the structur e of the initial macromolecular complexes. A low concentration of the metal, low content of acrylic acid, and increase in the length of the alkyl radical of methacrylate favor the enhancement of the efficiency of luminescence build up of the rare-earth ion.