Design and Synthesis of A Novel Bis-Benzimidazolyl Podand As a Responsive Chemosensors for Anions

Document Type: Research Paper

Authors

1 Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad

2 Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 91775- 1436, Iran.

Abstract

      A novel podand based anion receptor bearing benzimidazole motifs as recognition sites was designed and synthesized by reaction of 1,7-bis(2'-methylbenzoate)-1,4,7-trioxaheptane and phenylenediamine. The binding properties of anionic guest with this receptor were studied using UV-Vis and fluorescence spectroscopy. These studies revealed that this receptor exhibit selective recognition towards F- ionamong other anions such as HSO4-, ClO4-, Cl-, Br- and I- in methanol through intermolecular hydrogen bonding of guest and host. Also, we have focused our attention on the receptor-F- with theoretical computation based on DFT/B3LYP/6-31G(d).

Keywords