Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples

Ratiometric fluorescence sensors can provide more accurate analysis of target objects because of their self-calibration function. Traditional methods often use steps of chemical coupling with two different fluorescent materials as the dual emission source, which make the construction process complicated and hard to control. Here, we report a convenient and effective way to construct a ratiometric fluorescence sensor based on dual-emission carbon...