A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots
Sensitive and selective detection strategies for toxic heavy metal ions, which are rapid, cheap and applicable to environmental and biological fields, are of significant importance. As a result of specific interaction between thiol(s) used as ligands and heavy metal ions, the photoluminescence inten...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/23748 |
| _version_ | 1848751236721934336 |
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| author | Ke, J. Li, Xin Yong Shi, Y. Zhao, Q. Jiang, X. |
| author_facet | Ke, J. Li, Xin Yong Shi, Y. Zhao, Q. Jiang, X. |
| author_sort | Ke, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Sensitive and selective detection strategies for toxic heavy metal ions, which are rapid, cheap and applicable to environmental and biological fields, are of significant importance. As a result of specific interaction between thiol(s) used as ligands and heavy metal ions, the photoluminescence intensity of quantum dots (QDs) in PBS buffer solution was quenched and the aggregation of QDs was formed at the same time. Herein, we present water-soluble, low toxic QDs, ZnSe/ZnS, which were applied for ultrasensitive Hg2+ ion detection with a low detection limit (2.5 nM). In addition, a model has been proposed to explain the aggregation of QDs in the presence of heavy metal ions such as Hg2+ ions. |
| first_indexed | 2025-11-14T07:49:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-23748 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:49:31Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-237482017-09-13T13:59:40Z A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots Ke, J. Li, Xin Yong Shi, Y. Zhao, Q. Jiang, X. Sensitive and selective detection strategies for toxic heavy metal ions, which are rapid, cheap and applicable to environmental and biological fields, are of significant importance. As a result of specific interaction between thiol(s) used as ligands and heavy metal ions, the photoluminescence intensity of quantum dots (QDs) in PBS buffer solution was quenched and the aggregation of QDs was formed at the same time. Herein, we present water-soluble, low toxic QDs, ZnSe/ZnS, which were applied for ultrasensitive Hg2+ ion detection with a low detection limit (2.5 nM). In addition, a model has been proposed to explain the aggregation of QDs in the presence of heavy metal ions such as Hg2+ ions. 2012 Journal Article http://hdl.handle.net/20.500.11937/23748 10.1039/c2nr31238g restricted |
| spellingShingle | Ke, J. Li, Xin Yong Shi, Y. Zhao, Q. Jiang, X. A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title | A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title_full | A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title_fullStr | A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title_full_unstemmed | A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title_short | A facile and highly sensitive probe for Hg(ii) based on metal-induced aggregation of ZnSe/ZnS quantum dots |
| title_sort | facile and highly sensitive probe for hg(ii) based on metal-induced aggregation of znse/zns quantum dots |
| url | http://hdl.handle.net/20.500.11937/23748 |