FACILE SYNTHESIS and CHARACTERIZATION of 5-[(N-METHYL-N-(2- HYDROXYETHYL) -4-AMINO) -BENZYLIDENAMINO]-2- MERCAPTOBENZIMIDAZOLE. COMPOUND and ITS ELECTROCHEMICAL SENSOR APPLICATION

Schiff bases are formed from a reaction of primary amines with aldehydes and ketones. Schiff bases have a wide range of usage, including medicine, industry, technology and many areas of chemistry. Therefore, in this study it was aimed to synthesize a novel mercaptobenzimidazole derivative Schiff base. 5-[(N-Methyl-N-(2-hydroxyethyl)-4-amino)-benzylidenamino]-2- mercaptobenzimidazole (3) was obtained from reaction of N-methyl-N-(2-hydroxyethyl)-4- aminobenzaldehyde (1) and 5-Amino-2-mercaptobenzimidazole (2). The newly synthesized Schiff base compound was characterized by IR, 1H-NMR, 13C-NMR, UV-Visible and Elemental analyses techniques. Experimental measurements indicated that the synthesized compound exhibited a good activity for copper binding [2]. The synthesized compound was used as ionophore in the structure of potentiometric ion selective sensors. The prepared potentiometric ion selective sensors based on 5- [(N-Methyl-N-(2-hydroxyethyl)-4-amino)-benzylidenamino]-2-mercaptobenzimidazole (3) showed a selective potentiometric response for copper(II) ions. Additionally, the potentiometric performance characteristics such as linear working range, slope, detection limit, repeatability and pH range of the prepared sensors were investigated [3-5]