A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water
Detection of copper (II) ions (Cu<sup>2+</sup>) in water is important for preventing them from entering the human body to preserve human health. Here, a highly sensitive and selective fluorescence probe that uses mercaptopropionic acid (MPA)-capped InP/ZnS quantum dots (MPA-InP/ZnS QDs)...
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MDPI AG
2021
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oai:doaj.org-article:9318e121f65d47af9f2f0e61dd900efd2021-11-25T17:35:30ZA Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water10.3390/foods101127772304-8158https://doaj.org/article/9318e121f65d47af9f2f0e61dd900efd2021-11-01T00:00:00Zhttps://www.mdpi.com/2304-8158/10/11/2777https://doaj.org/toc/2304-8158Detection of copper (II) ions (Cu<sup>2+</sup>) in water is important for preventing them from entering the human body to preserve human health. Here, a highly sensitive and selective fluorescence probe that uses mercaptopropionic acid (MPA)-capped InP/ZnS quantum dots (MPA-InP/ZnS QDs) was proposed for the detection of trace amounts of Cu<sup>2+</sup> in water. The fluorescence of MPA-InP/ZnS QDs can be quenched significantly in the presence of Cu<sup>2+</sup>, and the fluorescence intensity shows excellent linearity when the concentration of Cu<sup>2+</sup> varies from 0–1000 nM; this probe also exhibits an extremely low limit of detection of 0.22 nM. Furthermore, a possible fluorescence-quenching mechanism was proposed. The MPA-InP/ZnS QDs probes were further applied to the detection of trace Cu<sup>2+</sup> in real water samples and drink samples, showing good feasibility.Zeyu XuYizhong WangJiaran ZhangCe ShiXinting YangMDPI AGarticlefluorescencequantum dotscopper (II) ionswaterChemical technologyTP1-1185ENFoods, Vol 10, Iss 2777, p 2777 (2021) |
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fluorescence quantum dots copper (II) ions water Chemical technology TP1-1185 |
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fluorescence quantum dots copper (II) ions water Chemical technology TP1-1185 Zeyu Xu Yizhong Wang Jiaran Zhang Ce Shi Xinting Yang A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| description |
Detection of copper (II) ions (Cu<sup>2+</sup>) in water is important for preventing them from entering the human body to preserve human health. Here, a highly sensitive and selective fluorescence probe that uses mercaptopropionic acid (MPA)-capped InP/ZnS quantum dots (MPA-InP/ZnS QDs) was proposed for the detection of trace amounts of Cu<sup>2+</sup> in water. The fluorescence of MPA-InP/ZnS QDs can be quenched significantly in the presence of Cu<sup>2+</sup>, and the fluorescence intensity shows excellent linearity when the concentration of Cu<sup>2+</sup> varies from 0–1000 nM; this probe also exhibits an extremely low limit of detection of 0.22 nM. Furthermore, a possible fluorescence-quenching mechanism was proposed. The MPA-InP/ZnS QDs probes were further applied to the detection of trace Cu<sup>2+</sup> in real water samples and drink samples, showing good feasibility. |
| format |
article |
| author |
Zeyu Xu Yizhong Wang Jiaran Zhang Ce Shi Xinting Yang |
| author_facet |
Zeyu Xu Yizhong Wang Jiaran Zhang Ce Shi Xinting Yang |
| author_sort |
Zeyu Xu |
| title |
A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| title_short |
A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| title_full |
A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| title_fullStr |
A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| title_full_unstemmed |
A Highly Sensitive and Selective Fluorescent Probe Using MPA-InP/ZnS QDs for Detection of Trace Amounts of Cu<sup>2+</sup> in Water |
| title_sort |
highly sensitive and selective fluorescent probe using mpa-inp/zns qds for detection of trace amounts of cu<sup>2+</sup> in water |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/9318e121f65d47af9f2f0e61dd900efd |
| work_keys_str_mv |
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