Luminescent Properties of Mixed-Ligand Neodymium β-Diketonates Obtained in Supercritical Carbon Dioxide in Polymer Matrices of Various Nature

Diverse-ligand phosphor complexes of neodymium acetylacetonate with phenanthroline have been synthesized in polymer matrices (oligourethanmethacrylate, fluoroplast, and polycarbonate) in the medium of supercritical carbon dioxide, while the role of one of the ligands in such complexes is performed by the polymer matrix fragments. The luminescence spectra of the obtained triple systems have been described and it has been shown that the position of the luminescence maxima is bathochromically shifted relative to the Nd(Acac)3/polymer double systems obtained in a similar way and the shift magnitude depends on the polymer matrix nature. It has been shown that when these components are introduced into polymers from a solution, such phosphor diverse-ligand neodymium complexes are not formed. The formation of new Nd(Acac)3/1,10-phenanthroline/polymer structures at the impregnation of oligourethane methacrylate by neodymium β-diketonate and phenanthroline in the supercritical CO2, which are not formed by the introduction of these components from solution, has been confirmed by differential thermal analysis.