Highly efficient detection of Cu and B O based on a recyclable asymmetric salamo-based probe in aqueous medium.

An asymmetric salamo-based probe molecule (H L) was synthesized and characterized structurally. When DMF/H O (9:1) was used as the solvent, it was shown probe H L has high sensitivity to Cu . Using high-resolution mass spectrometry and theoretical calculation, it was found that probe H L could form a more stable complex (1:1) with Cu , the minimum limit of detection (LOD) of H L for Cu was calculated as 9.95 × 10 M. In addition, probe H L could also be used to identify B O under the same detection conditions and the minimum LOD of H L for B O was calculated as 4.98 × 10 M. At the same time, density functional theory theoretical calculation further proved the flexibility of probe H L. Through the action of EDTA, probe H L had a cyclic ability to recognize Cu , and showed a better response in the physiological pH range; probe H L had the characteristics of fast recognition speed and high efficiency. In addition, with probe H L test paper for Cu and B O , the effect was more obvious. Meanwhile, probe H L can be used to quantitatively detect Cu in water samples.