Substantial Intensification of the Quantum Yield of Samarium(III) Complexes by Mixing Ligands: Microwave-Assisted
Lizandra L L S Melo1, Gerson P Castro1, Simone M C Gonçalves1
1Departamento de Química Fundamental, CCEN , Universidade Federal de Pernambuco , 50670-901 , Recife , Pernambuco Brazil.
Abstract:
A luminescence quantum yield of 7.8% was obtained for a quaternary mixed-ligand samarium complex; this value is higher than those previously reported in the literature for such complexes in solution. The complex was prepared by microwave-assisted synthesis in 15 min with a yield of 69%; that is, ∼400 times faster than the usual synthesis that required 4 days and led to a yield of only 30%. Therefore, we propose microwave-assisted synthesis as the method of choice for preparing mixed-ligand lanthanoid complexes.
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