Noval Anthraquinone Based Receptor for the Selective Detection of Acetate and Hypochlorite Ion With Relay Recognition With the applications of Real Sample Analysis and Bio-Imaging.

Abstract

By a simple condensation reaction, the receptor with anthraquinone moiety was synthesized and its sensing properties were explored in the anion sensing studies via colorimetric, UV-vis studies, fluorescence studies, and DFT calculations. The synthesized receptor senses both acetate and hypochlorite ions in DMSO medium. By the addition of all anions into the receptor the colour change was observed from pink to light purple colour for acetate ion and pink to light blue for hypochlorite ion. Furthermore, on relay recognition the acetate ion, when senses the Cr³⁺ ion, it shows an excellent answer which changes its light purple color to pink which is same as the receptor, while no colour change was observed for other ions. Acetate and hypochlorite ions show very low detection limit with receptor as 1.8 × 10^-7 M and 3.8 × 10^-7 M respectively. By understanding the sensing mechanism, the DFT calculation was performed for both AcO^- and ClO^- ions. Additionally, receptors were effectively utilized in the preparation of optical sensors supported by silica gel for the detection of AcO^- and ClO^- ions. Real-life application was carried out by sensing AcO - in vinegar and ClO - ions in ala. Thus, the receptor proved itself as a potentially useful for real-life application and bio-imaging studies.