Near-infrared (NIR) fluorescent probes are widely employed in biological detection because of their lower damage to biological samples, low background interference, and high signal-to-noise ratio.
Carbon nanodots as fluorescent probes were synthesized through a one-step hydrothermal method. The carbon nanodots can be used not only for multicolor intracellular imaging but also for highly sensitive and selective turn-on detection of glutathione.
Two new coumarin-based fluorescent probes were synthesized and successfully applied for the efficient detection of ClO− as turn-on fluorescence chemosensors by the oxidative cleavage of C–O and CN, the detection limits (LOD) for the two probes are 154 nM and 32 nM, respectively.
A small molecular fluorescent dye (SQ-Biotin) which can self-assemble into a non-fluorescent probe in aqueous solution for near infrared turn-on detection of avidin protein.