Synthesis and Kinetic Study by Ozawa Method of the Thermal Decomposition of Complexes Ln(thd)3phen
作者： Wilton Silva Lopes , Crislene Rodrigues da Silva Morais , A.G. de Souza
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.530-531.513
关键词: Luminescence 、 Total harmonic distortion 、 Kinetic energy 、 Analytical chemistry 、 Activation energy 、 Kinetics 、 Materials science 、 Thermal stability 、 Lanthanide 、 Thermal decomposition
摘要: Recently, highly luminescent lanthanide complexes with mixed ligands such as and β-diketone two herobiaryl have been synthesized suggested promising light-conversion molecular devices described by several authors. The synthesis, luminescence, quantum yields, spectroscopic characteristics, structure, among others properties of these complexes, including the possibility production thin film films from materials discussed, but little is known about their thermal decomposition kinetics. In this work we report determination kinetic parameters Gd(thd)3phen Er(thd)3phen (thd=2,2,6,6-tetramethyl-3,5- heptanodione; phen=1,10-phenantroline) using method proposed Ozawa (1965). obtained for activation energy were: 90 87 kJ.mol-1, values frequency factor 2.3x107 2.0x107 s-1 Er(thd)3phen, respectively. On notice following order in stability:
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