Based on self-assembly of a trifluorinated and acylpyrazole-modified β-diketonate ligand HL ((Z)-3-methyl-1-phenyl-4-(2,2,2-trifluoro-1-hydroxyethylidene)-1H-pyrazol-5(4H)-one), LnCl3·6H2O (Ln = La, Yb or Gd) and 2,2′-bpy (2,2′-bipyridine), three trikis-β-diketonate complexes [Ln(L)3(2,2′-bpy)] (Ln = La, 1; Ln = Yb, 2 or Ln=Gd, 3) were obtained, respectively. Further through physical doping, the series of PMMA-supported hybrid materials PMMA@[Ln(L)3(2,2′-bpy)] with high thermal stability and good film-forming property are obtained. Especially for PMMA@2, the doping also causes the improved NIR luminescent property (Φem = 0.97%) in comparison to the individual Yb3+-β-diketonate complex 2 (Φem = 0.81%) even up to a concentration of 200:1.
Scopus Subject Areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
- Energy transfer
- PMMA-supported Yb-based doping hybrid
- Trifluorinated and acylpyrazole-modified