title: Zr(H2O)2EDTA modulated luminescent carbon dots as fluorescent probes for fluoride detection.
abstract: A novel fluorescent probe (Zr(CDs-COO)(2)EDTA) has been designed for fluoride ion (F(-)) content detection based on the competitive ligand reactions carried out between the carboxylate groups (-COOH) on the surface of the luminescent carbon dots (CDs) and F(-) coordinated to Zr(H(2)O)(2)EDTA. The strong and stable fluorescence signal of this probe was quenched upon the addition of F(-) as a result of the formation of the non-fluorescent complex Zr(F)(2)EDTA, due to the stronger affinity of F(-) than the -COOH in the CDs to Zr(IV). The fluorescence change (ΔF) in this process was linear with respect to the content of F(-), ranging from 0.10 μM to 10 μM. The probe has been applied to F(-) detection in toothpaste and water samples with satisfactory results. Moreover, the mechanism of this Zr(H(2)O)(2)EDTA modulated fluorescent probe for the detection of F(-) was also discussed.
authors.affiliation: Department of Chemistry and Environmental Science, Zhangzhou Normal College, Zhangzhou, 363000, P.R. China. zzsyliujiaming@163.com
authors.forename: Jia-Ming
authors.initials: JM
authors.lastname: Liu
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Lin
authors.forename: Xin-Xing
authors.initials: XX
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Jiao
authors.forename: Ma-Lin
authors.initials: ML
authors.lastname: Cui
authors.forename: Shu-Lian
authors.initials: SL
authors.lastname: Jiang
authors.forename: Wen-Lian
authors.initials: WL
authors.lastname: Cai
authors.forename: Li-Hong
authors.initials: LH
authors.lastname: Zhang
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Zheng
mesh_terms: D002244:Carbon / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis* / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D015040:Zirconium / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D009942:Organometallic Compounds; D002244:Carbon; D015040:Zirconium; D005459:Fluorides