Abstract
The fluorescent and photochemical properties of TbIII complexes with macromolecular ligands based on acrylic acid were studied. The photochemical behavior of the macromolecular ThII complexes with acrylic acid-alkyl methacrylate copolymers differs considerably from those of TbIII complexes with polyacrylic acid and of low-molecular-weight analogs; in the former case, the intensity of Tb3+ photoluminescence noticeably increases during photolysis rather than decreases. It was found that the increase in the length of the alkyl group in the alkyl methacrylate favors the enhancement of the luminescence during the photolysis. The higher efficiency of the enhancement of the Eu3+ fluorescence during the photolysis of similar complexes of Eu3+ compared to the complexers of Tb3+ is due to the nature of the electrodipole “hypersensitive”5D0–7F2 transition in Eu3+.
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