Highly efficient detection of Cu 2+ and B 4 O 7 2− based on a recyclable asymmetric salamo‐based probe in aqueous medium

Autor: Yu-Jie Ding, Xin Xu, Ya-Juan Li, Tao Feng, Wen-Kui Dong
Rok vydání: 2020
Předmět:
Zdroj: Luminescence. 36:169-179
ISSN: 1522-7243
1522-7235
DOI: 10.1002/bio.3932
Popis: An asymmetric salamo-based probe molecule (H2 L) was synthesized and characterized structurally. When DMF/H2 O (9:1) was used as the solvent, it was shown probe H2 L has high sensitivity to Cu2+ . Using high-resolution mass spectrometry and theoretical calculation, it was found that probe H2 L could form a more stable complex (1:1) with Cu2+ , the minimum limit of detection (LOD) of H2 L for Cu2+ was calculated as 9.95 × 10-8 M. In addition, probe H2 L could also be used to identify B4 O72- under the same detection conditions and the minimum LOD of H2 L for B4 O72- was calculated as 4.98 × 10-7 M. At the same time, density functional theory theoretical calculation further proved the flexibility of probe H2 L. Through the action of EDTA, probe H2 L had a cyclic ability to recognize Cu2+ , and showed a better response in the physiological pH range; probe H2 L had the characteristics of fast recognition speed and high efficiency. In addition, with probe H2 L test paper for Cu2+ and B4 O72- , the effect was more obvious. Meanwhile, probe H2 L can be used to quantitatively detect Cu2+ in water samples.
Databáze: OpenAIRE
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