Imidazolium-based 1,1′-bi-2-naphthol fluorescent probe for ratiometric and selective detection of DNA in water†
Abstract
A water-soluble imidazolium-based BINOL receptor R-1 was exploited, which could selectively sense DNA over other biologically relevant anions including nucleotides under physiological conditions. Upon addition of DNA, R-1 displayed notably blue-shifted and ratiometric fluorescence enhancement.