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Yang J, Yang Y, Su L, Tao X, Zhang J, Chen Y, Yang L. Diethylenetriamine-β-CD-modified carbon quantum dots for selective fluorescence sensing of Hg 2+ and Fe 3+ and cellular imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 291:122364. [PMID: 36652803 DOI: 10.1016/j.saa.2023.122364] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Diethylenetriamine-β-cyclodextrin-modified carbon quantum dots (3 N-CQDs) were synthesized via a one-step hydrothermal method using citric acid as the carbon source and diethylenetriamine-β-cyclodextrin (3 N-β-CD) as the nitrogen source. The successful preparation of 3 N-CQDs were revealed by infrared absorption spectroscopy, ultraviolet (UV)-visible absorption spectroscopy, fluorescence spectroscopy, XRD, XPS, TEM, and TG. Further spectroscopic studies showed that the synthesized carbon quantum dots offered good anti-interference capability. The relative fluorescence quantum yield was 67.2 %. The limits of detection for Hg2+ and Fe3+ were 0.25 µM and 0.57 μM, respectively. Cytotoxicity and imaging studies showed that the prepared carbon quantum dots had low cytotoxicity, good biocompatibility, and good cellular imaging capability for HeLa cells. They offered fluorescent sensing of Hg2+ and Fe3+ in live cells. Therefore, 3 N-CQDs were ideal fluorescent probes for the detection of Hg2+ and Fe3+ in water.
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Affiliation(s)
- Ju Yang
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Yunhan Yang
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Lijiao Su
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Xin Tao
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Juntong Zhang
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Yan Chen
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China
| | - Lijuan Yang
- Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, PR China.
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Simple thiosemicarbazone "switch" sensing of Hg2+ and biothiols in pure aqueous solutions and application to imaging in lysosomes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Synthesis of novel organic-inorganic hybrid fluorescent microspheres and their applications as Fe(III), Hg(II) and biothiols probes. Talanta 2019; 195:713-719. [DOI: 10.1016/j.talanta.2018.11.082] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/19/2018] [Accepted: 11/22/2018] [Indexed: 11/21/2022]
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