Insights into the electrooptical anion sensing properties of a new organic receptor: solvent dependent chromogenic response and DFT studies

Abstract

A highly selective hydrazine based electrooptical receptor featuring solvent based color transition properties in the presence of acetate ions has been developed. The AcO⁻ ion mediated color transition properties of a new organic receptor in solvents of varying polarity highlights the influence of dipole moment in stabilizing the excited state. Selective detection of acetate ions by a new organic receptor in the presence of DMSO : Tris HCl buffer (9 : 1, v/v) has been the pivotal concept of the present work. ¹H-NMR titration and DFT studies provide quantitative proof of the underlying detection mechanism. Solution and solid state sensing response of anions by the receptor reflects the practical utility in real time sample analysis.