A dansyl-based fluorescent probe for the highly selective detection of cysteine based on a d-PeT switching mechanism†
Abstract
A novel fluorescent probe, DN-C, for detection of cysteine (Cys) based on a d-PeT switching mechanism is reported. In the presence of Cys, the probe exhibits a turn-on fluorescence signal and nearly 28-fold fluorescence intensity enhancement. The cellular imaging experiment indicated the DN-C possess desirable cell permeability for biological applications.