Abstract
A new series of Schiff bases were synthesized by the condensation of sulfaproxylene with various aldehydes in ethanol. The structures of Schiff bases were characterized by using elemental analysis, IR, 1 H NMR, 13 C NMR and Mass spectrometry techniques. Thermal stability of the prepared compounds was investigated using TG and DTG. The kinetic and thermodynamic parameters such as activation energy ( E ), enthalpy of activation (Δ H ), entropy of activation (Δ S ), and Gibbs free energy change of the decomposition (Δ G ) were evaluated following Coats-Redfern method. In addition, the compounds were studied for their fluorescence properties, where compound 1 yielded the strongest intensity in 1×10 -4 M DMSO solution.
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