Department of Chemistry
Synthesis, characterization, and photophysical properties of first heterobinuclear Zn-Ln (Ln = La, Nd, Eu, Gd, Tb, Er, and Yb) complexes based on asymmetric schiff-base ligand
With a novel asymmetric Schiff-base zinc complex ZnL(H 2 L = N-(3-methoxysalicylidene)-N-(5-(4-cyanophenyl)-3-methoxysalicylidene) phenylene-1, 2-diamine), obtained from phenylene-1, 2-diamine, 3-methoxysalicylaldehyde, and 5-(4-cyanophenyl)-3-methoxysalicylaldehyde, as the precursor, a series of heterobinuclear Zn-Ln complexes [ZnLnL(NO 3) 3 (CH 3 CN)] (Ln = La, 1; Ln = Nd, 2; Ln = Eu, 3; Ln = Gd, 4; Ln = Tb, 5; Ln = Er, 6; Ln = Yb, 7) were obtained by further reaction with Ln(NO3)3 · 6H2O. Photophysical studies of these complexes show that the strong and characteristic NIR luminescence with emissive lifetimes in the microsecond range has been sensitized from the excited state of the asymmetric Schiff-base ligand due to effective intramolecular energy transfer. © 2013 Copyright Taylor and Francis Group, LLC.
asymmetric Schiff base, near-infrared, sensitization and energy transfer
Source Publication Title
Taylor & Francis
Zhao, Shunsheng, Xiangrong Liu, Xingqiang Lü, and Wai-Kwok Wong. "Synthesis, characterization, and photophysical properties of first heterobinuclear Zn-Ln (Ln = La, Nd, Eu, Gd, Tb, Er, and Yb) complexes based on asymmetric schiff-base ligand." Spectroscopy Letters 46.2 (2013): 109-116.