A novel peptide fluorescent chemical sensor capable of detecting Cu2+, Zn2+, and S2−
Yixuan Ren,
Chaowei Hao,
Chenyi Yu
et al.
Abstract:A novel peptide‐based chemical fluorescence sensor L (Dansyl‐His‐Pro‐Thr‐Cys‐NH2) was designed and synthesized. This sensor exhibits an “On–Off–On” detection cycle to detect Cu2+, Zn2+, and S2− in solution. According to the chelation‐enhanced fluorescence (CHEF) mechanism, when Zn2+ is present, the fluorescence is significantly enhanced and a blue shift occurs, representing a “Turn‐On” phase of the fluorescence detection mode. Because copper ions (Cu2+) have a paramagnetic quenching sensing mechanism, the fluo… Show more
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