Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals
Heavy metal (HM) pollution is a major global concern. Carbon dots (CDs) have demonstrated unique properties as sensing platforms for HMs detection. This review summarizes the progress made in recent years in fluorescence methods to determine HMs and their species using CDs. First, the strategies to...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2020-11-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2020-0507 |
| _version_ | 1828124817985896448 |
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| author | Li Pingjing Li Sam F. Y. |
| author_facet | Li Pingjing Li Sam F. Y. |
| author_sort | Li Pingjing |
| collection | DOAJ |
| description | Heavy metal (HM) pollution is a major global concern. Carbon dots (CDs) have demonstrated unique properties as sensing platforms for HMs detection. This review summarizes the progress made in recent years in fluorescence methods to determine HMs and their species using CDs. First, the strategies to synthesize and purify CDs are reviewed. The photoluminescence principles of CDs and their sensing mechanisms as HMs sensors are then summarized. The binding strategies between CDs and HMs are proposed to provide salient principles to design desirable CD-based HMs sensors. The preparation and merits of “turn-on” and ratiometric CDs for HMs detection with higher accuracy are discussed compared with commonly used “turn-off” sensors. Subsequently, the progress on detecting single HM ions, multi-HMs, and different metal species in solution, and the development of gel/solid-state sensor platforms such as paper-based devices, sensor arrays, hydrogels, polymer films, and ion-imprinted polymers are critically accessed. Furthermore, the advances in the cell, bacterial, plant, and animal bioimaging of HMs with CDs as promising bioimaging reagents are presented. Finally, the challenges and prospects of CDs as HMs sensors in future investigations are discussed. |
| first_indexed | 2024-04-11T15:10:22Z |
| format | Article |
| id | doaj.art-566ecba62979444fbbdac4242aece81b |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-04-11T15:10:22Z |
| publishDate | 2020-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-566ecba62979444fbbdac4242aece81b2022-12-22T04:16:39ZengDe GruyterNanophotonics2192-86062192-86142020-11-0110287790810.1515/nanoph-2020-0507Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metalsLi Pingjing0Li Sam F. Y.1Analytical Instrumentation Center, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China Department of Chemistry, 3 Science Drive 3, National University of Singapore, Singapore 117543, Singapore Heavy metal (HM) pollution is a major global concern. Carbon dots (CDs) have demonstrated unique properties as sensing platforms for HMs detection. This review summarizes the progress made in recent years in fluorescence methods to determine HMs and their species using CDs. First, the strategies to synthesize and purify CDs are reviewed. The photoluminescence principles of CDs and their sensing mechanisms as HMs sensors are then summarized. The binding strategies between CDs and HMs are proposed to provide salient principles to design desirable CD-based HMs sensors. The preparation and merits of “turn-on” and ratiometric CDs for HMs detection with higher accuracy are discussed compared with commonly used “turn-off” sensors. Subsequently, the progress on detecting single HM ions, multi-HMs, and different metal species in solution, and the development of gel/solid-state sensor platforms such as paper-based devices, sensor arrays, hydrogels, polymer films, and ion-imprinted polymers are critically accessed. Furthermore, the advances in the cell, bacterial, plant, and animal bioimaging of HMs with CDs as promising bioimaging reagents are presented. Finally, the challenges and prospects of CDs as HMs sensors in future investigations are discussed.https://doi.org/10.1515/nanoph-2020-0507binding strategiesbioimagingcarbon dotsheavy metalspreparation of cdssignal responsesolid-state sensor platformspeciation |
| spellingShingle | Li Pingjing Li Sam F. Y. Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals Nanophotonics binding strategies bioimaging carbon dots heavy metals preparation of cds signal response solid-state sensor platform speciation |
| title | Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| title_full | Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| title_fullStr | Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| title_full_unstemmed | Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| title_short | Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| title_sort | recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals |
| topic | binding strategies bioimaging carbon dots heavy metals preparation of cds signal response solid-state sensor platform speciation |
| url | https://doi.org/10.1515/nanoph-2020-0507 |
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