Green Synthesis, Characterization, Photophysical and Electrochemical Properties of Bis-chalcones

Abstract

Donor-acceptor conjugated dienes (bis-chalcones) were synthesized via an ultrasonic radiation, accomplished by the reaction between 3-acetyl-2,5-dimethylthiophene/1 (2,5-dimethyl-furan-3-yl)- ethanone and terephthalaldehyde. Bis-chalcones were investigated with the aim to elucidate the contribution of their interaction with solvent molecules upon intramolecular charge transfer. The chemical structure of bis-chalcones was confirmed by elemental analysis, FT-IR, 1H NMR, 13C NMR and GC-MS spectral analysis. UV-visible and emission spectra indicated the properties of furan and thiophene bis-chalcones had a significant effect on the visible absorption and emission maxima. In addition, a pronounced effect on the absorption maxima and florescent maxima were observed upon increasing the solvent polarity.