| LIU Juan-juan,CHEN Yong-lei,CHEN Xing-guo.A Review of the Preparation of Novel Fluorescent Carbon Dot and Its Application for the Determination of Trace Metal Ions[J].Rock and Mineral Analysis,2020,39(2):174-187 |
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| A Review of the Preparation of Novel Fluorescent Carbon Dot and Its Application for the Determination of Trace Metal Ions |
| Received:July 10, 2019 Revised:September 09, 2019 |
| DOI：10.15898/j.cnki.11-2131/td.201907100099 |
| Key words: carbon dot fluorescent probe optical properties synthetic materials metal ions |
| Author Name | Affiliation | E-mail | | LIU Juan-juan | College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Lanzhou University Second Hospital, Lanzhou 730030, China | | | CHEN Yong-lei | College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China | | | CHEN Xing-guo | College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China | chenxg@lzu.edu.cn |
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| Abstract: |
BACKGROUND: Owing to their small particle size, good stability against photobleaching, high fluorescence stability, tunable fluorescence emission, easy surface functionalization, low toxicity and excellent biocompatibility, carbon dot (CD) has been widely applied in many fields including catalyst, cell imaging, drug delivery, fluorescence detection and photoelectronic devices. In recent years, synthetic methods for preparing high-performance fluorescent CD using different raw materials have attracted much attention. In addition, detection of trace metal ions by a fluorescent probe has been rapidly developed and widely used. The fluorescent probe can be constructed thus:the CD directly interact with the target analyte, the CD modified by the specific ligand interact with the target analyte, and the CD forming a complex with other substances interact with the target analyte.
OBJECTIVES: To provide references for researchers to synthesize CD and construct fluorescent probes based on CD for the determination of trace metal ions in complex samples.
METHODS: The optical properties and synthetic raw materials of CD were described. The process and characteristics of the commonly used top-down and bottom-up methods were summarized. The application progress of fluorescent probes constructed by the three interaction modes between CD and target analytes for the determination of biochemical reaction ions, Fe3+, Zn2+ and Cu2+, and other heavy metal ions such as Hg2+, As3+, Pb2+, Cr6+ and Cd2+ were reviewed.
RESULTS: Different raw materials had been utilized for synthesizing CD with different properties. The prepared CD were used to construct fluorescent probes for the determination of micro metal ions with high selectivity and sensitivity.
CONCLUSIONS: Further research on the determination mechanisms, development of new detection modes, construction of fluorescent probes for specific metal ions and sample components, and establishment of analytical methods, which can be applied to complex samples are the challenges and development orientation of the fluorescent probes based on CD. |
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