کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1305230 | 1498920 | 2016 | 4 صفحه PDF | دانلود رایگان |
• Trifluorinated and acylpyrazole-modified β-diketonate Ln3 + complexes
• Physical property in solution or PMMA
• Sensitization for NIR luminescence
In the series of binary tris-β-diketonate complexes [Ln(L)3(Phen)] (HL = (Z)-3-methyl-1-phenyl-4-(2,2,2-trifluoro-1-hydroxyethylidene)-1H-pyrazol-5(4H)-one; Phen = 1,10-phenanthroline; Ln = La, 1; Ln = Nd, 2; Ln = Yb, 3; Ln = Er, 4 or Ln = Gd, 5), the relatively lower ligands-based 3ππ⁎ energy level (18,727 cm− 1) results in the highly efficient NIR luminescence (ФYbYb = 1.37% and ФYbL = 1.06%) of Yb3 +-based 3 in solution and the higher NIR quantum yield (ФYbYb = 1.77% and ФYbL = 1.31%) in PMMA (Poly(methyl methacrylate) besides the improved physical properties.
For [Yb(L)3(Phen)] (3) based on the trifluorinated and acylpyrazole-modified β-diketonate ligand HL and the rigid ancillary ligand Phen, the relatively lower ligands-based 3ππ* energy level results in its highly efficient NIR luminescence (ФYbYb = 1.37% and ФYbL = 1.06%) in solution, and improved physical property including more efficient NIR luminescent property (ФYbYb = 1.77% and ФYbL = 1.31%) in PMMA.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 70, August 2016, Pages 153–156