Construction of luminescent tetranuclear Ni–Ln (Ln = Eu and Yb) Schiff base nanoclusters
| Autor: | Bichen Yuan, Fei Wang, Chaoqun Zhu, Ting Guo, Weizhong Jiang, Yi Li, Xiaoping Yang, Junbin Tao |
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| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Schiff base 010405 organic chemistry Ligand Quantum yield 010402 general chemistry 01 natural sciences 0104 chemical sciences Nanoclusters Ion Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Materials Chemistry Physical and Theoretical Chemistry Absorption (chemistry) Luminescence |
| Zdroj: | Polyhedron. 164:108-112 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2019.02.034 |
| Popis: | Two tetranuclear Ni–Ln nanoclusters [Ni2Ln2(L)2(OAc)6] (Ln = Eu (1) and Yb (2)) were synthesized by the using of a new Schiff base ligand with Ph-S-Ph backbone. The sulfur atom of the Schiff base ligand is coordinated with the Ni2+ ion. 1 and 2 have planar structures and their molecular sizes are about 6 × 11 × 19 A. Upon the excitation of ligand-centered absorption, 2 exhibits the typical NIR luminescence of Yb3+. The lanthanide luminescence lifetime (τ) and quantum yield (Φem) of 2 in CH3CN are 5.18 μs and 0.04%, respectively. |
| Databáze: | OpenAIRE |
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