Click synthesized dianthryl–TTFV: an efficient fluorescent turn-on probe for transition metal ions

Abstract

Tetrathiafulvalene vinylogue (TTFV) was functionalized with two anthryl fluorophores via Cu(I)-catalyzed alkyne-azide [3 + 2] cycloaddition, forming a dianthryl-TTFV hybrid to show fluorescent turn-on sensing behaviour for Cu(2+), Fe(2+), and Cd(2+) ions in THF with remarkably low detection limit down to the sub-ppm level.