Tetraphenylimidodiphosphinate ligand as potent complexation agent for ternary photoluminescent lanthanide complexes

Abstract Tetraphenylimidodiphosphinate ligand is considered as “inorganic” analogue of 1,3-diketonates, and forms neutral, highly photoluminescent ternary complexes with Eu(III), Tb(III), Dy(III), and Sm(III) involving three derivatives of 1,10-phenanthroline as auxillary ligands, complementing the coordination sphere around the lanthanide ions. The influence of these coligands were studied in the solid-state emission spectra, indicating high impact on the photoluminescence of ternary complexes.