Fluorogenic sydnonimine probes for orthogonal labeling.
Wenyuan XuZhuzhou ShaoCheng TangChun ZhangYinghan ChenYong LiangPublished in: Organic & biomolecular chemistry (2022)
A FRET-based fluorescence turn-on probe is designed, which employs a sydnonimine as the linker to match specific fluorophore and quencher pairs and releases the fluorescence after the "click-and-release" reaction. Furthermore, we realized selective fluorescence labeling by exploiting the mutual orthogonality between sydnonimine-DIBAC and tetrazine-1,3-Cp cycloaddition pairs.