Multi-Step Synthesis, Photophysical and Physicochemical Properties of Novel Push- π -Pull AADC Chromophores

Abstract

Coumarin based heterocyclic chalcone (E)-3-(3-(1-allyl-1H-indol-3-yl) acryloyl)-7-(diethylamino)-2H-chromen-2-one (AADC) was synthesized by the multi-steps synthesis. The structure of the AADC was established by the spectroscopic technics and purity of the AADC was confirmed by the elemental analysis. Physicochemical parameters of the AADC in ten different solvents such as molar absorption coefficient, transition dipole moments, stokes shift, oscillator strength and fluorescence quantum yield were calculated. Interaction of the AADC chromophore with cationic CATB and anionic SDS surfactants were determined by using the fluorescence spectroscopy techniques. It was observed that band fluorescence spectrum intensity increases with increasing the concentration of the surfactants. This suggests that strong interaction occurs between AADC with surfactants and this interaction arise from electrostatic forces. So, AADC chromophore could be used as analysis to define the CMC of the surfactants.