Synthesis and characterization of a unique fused spiro-dihydropyran based chemodosimeter for selective visual and fluorescent detection of Cu2+ ion in aqueous medium by “turn-on” mode

Abstract

A realistically newly designed Cu2+ ion specific fluorescent chemodosimeter has been synthesized from α,α'-(E,E)-bis(benzylidene)cyclohexanone having a fused spiro-dihydropyran moiety characterized by 2D NMR and X-Ray Crystallographic study. It also demonstrates an irreversible, instant direct visualisation by unaided eye chemosensing property in aqueous buffer (pH 7.4) with a colour change from yellow to orange upto 0.3 × 10−6 M.