Several bent shaped 1,3,4-oxadiazole based azomethine compounds were synthesized by the condensation reactions of aromatic heterocyclic diamines with the 4-n-alkoxybenzaldehydes (n = 12, 14, 16) on heating 6 h in N,N-dimethylformamide at 100 degree Celcius in presence of acetic acid (Scheme 1). Their chemical structures were determined from <sup>1</sup>H and <sup>13</sup>C NMR spectra as well as elemental analysis. Their thermal properties were also examined by using a number a number of experimental techniques including differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), polarizing optical microscope (POM), and variable temperature X-ray diffraction (VTXRD) studies. Their solubility, absorption and light-emission properties in different organic solvents were also included.

Synthesis and characterization of liquid-crystalline and light-emitting properties of several 1,3,4-oxadiazole diamines-based azomethine compounds

2019 Spring National Meeting

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