Journal
CHEMISTRY LETTERS
Volume 47, Issue 4, Pages 421-424Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.171155
Keywords
Highly photoluminescent NCDs; Sensors; Cell imaging
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Funding
- National Nature Science Foundation of china [21605111, 21705104]
- Key Research and Development Projects of Shanxi Province [201703D321015-2]
- Youth Science Foundation of Shanxi Province [201701D221064]
- Science & Technology Innovation Fund of Shanxi Medical University [C01201003]
- Youth Foundation of Shanxi Medical University [02201306]
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Luminescent nitrogen-doped carbon dots (NCDs) with high fluorescence quantum yield (46.01%) are synthesized from ammonium citrate and betaine hydrochloride by a simple and rapid green route of a one-pot hydrothermal method. The as-prepared NCDs exhibit excellent selectivity and sensitive detection for H+ and Hg2+ (detection limit of 1.69 nM for Hg2+). Finally, the low toxicity and highly photoluminescent NCDs are utilized to detect H+ and Hg2+ in SMMC-7721 cells by a laser scanning confocal microscope.
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