A high-efficiency salamo-based copper(ii) complex double-channel fluorescent probe

In this paper, a salamo-based copper(ii) complex probe L-Cu(2+) was synthesized, which combined with copper(ii) ions to form L-Cu(2+) for the detection of S(2−) and had a good fluorescence chemical response. Through spectral analysis, we found that S(2−) could be identified with high sensitivity and selectivity in the presence of various anions and could be used for the detection of S(2−) by the naked eye. With the addition of S(2−), the solution color changed from colorless to bright yellow. UV absorption, fluorescence and other characterization methods were carried out, and the mechanism of action was determined. In addition, we performed a visual inspection of H(2)S gas, and the probe L-Cu(2+) could detect S(2−) in the gas molecules, revealing its potential application value in biology and medicine.