INFLUENCE OF THE NATURE OF meso-SUBSTITUENTS AND EXTRA-LIGANDS ON THE LUMINESCENCE OF YTTERBIUM IN COMPLEXES WITH PORPHYRINS

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Abstract

Complexes of ytterbium with various meso-tetrasubstituted porphyrins have been obtained and their spectral-luminescent properties have been investigated. It is shown that the quantum yield and the lifetime of 4f-luminescence of the ytterbium ion are higher in complexes with porphyrins that contain aromatic and heteroaromatic meso-substituents (as compared to n-alkyl ones) and also in complexes with the acetylacetonate ion as an extra-ligand.

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