{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["12(44)"],"submitter":["Shi H"],"pubmed_abstract":["Fluorescent carbon dots (CDs) were synthesized by a one-step hydrothermal treatment of wild jujube and dl-tryptophan. The structure and properties of the CDs were confirmed by transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet visible absorption spectroscopy, fluorescence spectroscopy and so on. The as-prepared CDs exhibit excellent excitation-independent but pH-dependent (4.0-12.0) fluorescent features and emit blue strong fluorescence under 365 nm light. Hg<sup>2+</sup> can decrease the fluorescence intensity of the CDs through static quenching, while the addition of oxalic acid (OA) recovers it owing to the coordination binding between oxalic acid and Hg<sup>2+</sup>. Based on this, the as-prepared CDs were used as a new \"off-on\" fluorescent probe for highly sensitive determination of oxalic acid with a wide linear detection range of 0.1-20 mg L<sup>-1</sup> and a low detection limit of 0.057 mg L<sup>-1</sup>. Moreover, the fluorescent probe was successfully applied to detect oxalic acid in tomato and cherry tomato samples with satisfactory results."],"journal":["RSC advances"],"pagination":["28545-28552"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9535697"],"repository":["biostudies-literature"],"pubmed_title":["Wild jujube-based fluorescent carbon dots for highly sensitive determination of oxalic acid."],"pmcid":["PMC9535697"],"pubmed_authors":["Li X","Li Y","Feng S","Shi H"],"additional_accession":[]},"is_claimable":false,"name":"Wild jujube-based fluorescent carbon dots for highly sensitive determination of oxalic acid.","description":"Fluorescent carbon dots (CDs) were synthesized by a one-step hydrothermal treatment of wild jujube and dl-tryptophan. The structure and properties of the CDs were confirmed by transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet visible absorption spectroscopy, fluorescence spectroscopy and so on. The as-prepared CDs exhibit excellent excitation-independent but pH-dependent (4.0-12.0) fluorescent features and emit blue strong fluorescence under 365 nm light. Hg<sup>2+</sup> can decrease the fluorescence intensity of the CDs through static quenching, while the addition of oxalic acid (OA) recovers it owing to the coordination binding between oxalic acid and Hg<sup>2+</sup>. Based on this, the as-prepared CDs were used as a new \"off-on\" fluorescent probe for highly sensitive determination of oxalic acid with a wide linear detection range of 0.1-20 mg L<sup>-1</sup> and a low detection limit of 0.057 mg L<sup>-1</sup>. Moreover, the fluorescent probe was successfully applied to detect oxalic acid in tomato and cherry tomato samples with satisfactory results.","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Oct","modification":"2025-04-05T13:27:30.244Z","creation":"2025-04-05T13:27:30.244Z"},"accession":"S-EPMC9535697","cross_references":{"pubmed":["36320539"],"doi":["10.1039/d2ra03780g"]}}