CS-symmetric triarylborane substituted bisthiazole for selective detection of F−and CN−ions

Abstract

Triarylborane substituted bisthiazole 1 was designed and synthesized by the Sonogashira cross-coupling reaction for selective detection of F−and CN−ions in the presence of Cl−, Br−, I−and NO2 −anions. The detection limits for F−and CN−were found to be 5.7 × 10−6 M and 2.1 × 10−6 M, respectively. The time dependent density functional theory (TD-DFT) calculation at B3LYP on the bisthiazole triarylborane 1 was studied for F−and CN−ions. In the case of 1 Boron is electron deficient, the addition of F−ion should increase the electron density on Boron which was confirmed by electrostatic potential surfaces of bisthiazole triarylborane dyad 1, 1-F. © 2016 Elsevier Ltd