A colorimetric and fluorometric dual-modal assay for mercury ion by a molecule

The synthesis and sensing characteristics of a new class of colorimetric and fluorometric dual-modal probe for mercury ion are outlined. Judicious placement of two dithia-dioxa-aza macrocycles on the BODIPY chromophore generates this interesting molecule. A highly Hg2+-selective fluorescence enhancing property (> 7-fold) in conjunction with a visible colorimetric change from purple to red-pink can be observed, leading to potential fabrication of both naked-eye and ratiometric fluorescent detection of Hg2+.