Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples
Chiral cholesteric molecular tweezer <b>7a</b> was synthesized, and its recognition properties for Ag<sup>+</sup>, Al<sup>3+</sup>, Ca<sup>2+</sup> etc., were investigated by UV and fluorescence spectra. The results showed that in ethanol/Tris (1/1, &l...
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oai:doaj.org-article:6d9900ee43cf4704afa1e906eca9a4492021-11-25T18:28:27ZCholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples10.3390/molecules262269191420-3049https://doaj.org/article/6d9900ee43cf4704afa1e906eca9a4492021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6919https://doaj.org/toc/1420-3049Chiral cholesteric molecular tweezer <b>7a</b> was synthesized, and its recognition properties for Ag<sup>+</sup>, Al<sup>3+</sup>, Ca<sup>2+</sup> etc., were investigated by UV and fluorescence spectra. The results showed that in ethanol/Tris (1/1, <i>v</i>/<i>v</i>, pH 7.0) buffer solution, the host molecular tweezer <b>7a</b> had a specific recognition ability for Ag<sup>+</sup>, the detection limit was up to 1 × 10<sup>−6</sup> mol/L, and other metal ions had little effect on Ag<sup>+</sup> recognition. At the same time, the naked-eye detection of Ag<sup>+</sup> was realized by the light red color of the complex solution. Furthermore, the mechanism of recognition of Ag<sup>+</sup> by molecular tweezer <b>7a</b> was studied by a nuclear magnetic titration test and computer molecular simulation, and a rapid detection method of Ag<sup>+</sup> using host molecular tweezer <b>7a</b> was established. Through the determination of Ag<sup>+</sup> in milk powder, quinoa and other food samples, it was proved that this novel method had a good application prospect for the detection of Ag<sup>+</sup> in food.Zhe LiuYing YeHong WangLi-xia LuoMDPI AGarticlecholesteric molecular tweezerartificial receptorsilver ionsnaked-eye detectionrecognition mechanismOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6919, p 6919 (2021) |
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cholesteric molecular tweezer artificial receptor silver ions naked-eye detection recognition mechanism Organic chemistry QD241-441 |
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cholesteric molecular tweezer artificial receptor silver ions naked-eye detection recognition mechanism Organic chemistry QD241-441 Zhe Liu Ying Ye Hong Wang Li-xia Luo Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| description |
Chiral cholesteric molecular tweezer <b>7a</b> was synthesized, and its recognition properties for Ag<sup>+</sup>, Al<sup>3+</sup>, Ca<sup>2+</sup> etc., were investigated by UV and fluorescence spectra. The results showed that in ethanol/Tris (1/1, <i>v</i>/<i>v</i>, pH 7.0) buffer solution, the host molecular tweezer <b>7a</b> had a specific recognition ability for Ag<sup>+</sup>, the detection limit was up to 1 × 10<sup>−6</sup> mol/L, and other metal ions had little effect on Ag<sup>+</sup> recognition. At the same time, the naked-eye detection of Ag<sup>+</sup> was realized by the light red color of the complex solution. Furthermore, the mechanism of recognition of Ag<sup>+</sup> by molecular tweezer <b>7a</b> was studied by a nuclear magnetic titration test and computer molecular simulation, and a rapid detection method of Ag<sup>+</sup> using host molecular tweezer <b>7a</b> was established. Through the determination of Ag<sup>+</sup> in milk powder, quinoa and other food samples, it was proved that this novel method had a good application prospect for the detection of Ag<sup>+</sup> in food. |
| format |
article |
| author |
Zhe Liu Ying Ye Hong Wang Li-xia Luo |
| author_facet |
Zhe Liu Ying Ye Hong Wang Li-xia Luo |
| author_sort |
Zhe Liu |
| title |
Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| title_short |
Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| title_full |
Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| title_fullStr |
Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| title_full_unstemmed |
Cholesteric Molecular Tweezer Artificial Receptor for Rapid and Highly Selective Detection of Ag<sup>+</sup> in Food Samples |
| title_sort |
cholesteric molecular tweezer artificial receptor for rapid and highly selective detection of ag<sup>+</sup> in food samples |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/6d9900ee43cf4704afa1e906eca9a449 |
| work_keys_str_mv |
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| _version_ |
1718411080657534976 |