An article Symmetry correlations between crystallographic and photoluminescence study of ternary beta-diketone europium(iii) based complexes using 1,10-phenanthroline as the ancillary ligand WOS:000493493400033 published article about LANTHANIDE COMPLEXES; HIGHLY LUMINESCENT; CRYSTAL-STRUCTURE; ELECTROLUMINESCENCE; IONS in [Alexander, Orbett T.; Brink, Alice; Visser, Hendrik G.] Univ Free State, Dept Chem, ZA-9301 Bloemfontein, South Africa; [Kroon, Robin E.] Univ Free State, Dept Phys, ZA-9301 Bloemfontein, South Africa in 2019, Cited 45. The Name is Benzoic anhydride. Through research, I have a further understanding and discovery of 93-97-0. Safety of Benzoic anhydride
This work entails deep red emitting Eu-III based complexes with a variety of ternary beta-diketonate ligands and 1,10-phenanthroline as the ancillary ligand in the system. The solid state structure and spectroscopic analysis has been outlaid in terms of photoluminescence and crystallography. A luminescence quantum efficiency of 50% was obtained for the [tris-(4,4,4-trifluoro-1-chlorophenyl-butanedione)mono-(1,10-phenanthroline)europium(iii)] complexes. Moreover, complexes [tris-(2,2,6,6-tetramethyl-heptanedione)mono-(1,10-phenanthroline) europium(iii)] and {[hexa-(benzyl carboxylic acid) bis-(1,10-phenanthroline)di-europium(iii)]-mu-[kappa(2)-O,O ‘-(benzyl carboxylic acid)](2)} were found to also have quantum yields of 9% and 28% with respective sensitization efficiencies of 85%, 15% and 58%. These results were articulated with crystallographic details pertaining to the nature of coordination and the effect of steric and electronic properties thereof which somewhat impacts the Eu-N bond distances. A symmetry correlation was drawn between the crystallographic data and the photoluminescence data.
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Reference:
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