Synthesis and Application of Thiourea and Amide Based Chemosensors for Recognition of Anions
Özet
Because of the importance of anions in biological and chemical processes, studies based on anion recognition are increasingly popular. The common property of the compounds synthesized and used as anion receptors is their ability to form complexes by hydrogen bonding with the anions in solution. The presence of anions in the solution can be determined by examining the changes on the sensor molecules by spectroscopic techniques. In addition to this, the development of colorimetric sensors that changes their colors upon complexation with anions is preferred because of the ease of use.In this study, six thiourea (five are new) and two amide (one is new) are synthesized and characterized by FT-IR, 1H NMR, 13C NMR and for four chosen compounds by COSY and HETCOR techniques. After that, the interactions and selectivities of those compounds with several anions were investigated by 1H NMR spectroscopy, UV-Vis titrations and by naked-eye observations.
