2019
DOI: 10.1021/acsomega.9b01911
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Highly Selective and Sensitive Detection of PO43– Ions in Aqueous Solution by a Luminescent Terbium Metal–Organic Framework

Abstract: A luminescent terbium metal–organic framework [Tb(HPIA–)(PIA2–)(H2O)2] (Tb-MOF), synthesized by a lanthanide metal ion (Tb3+) and nitric heterocyclic carboxylic acid ligands H2PIA (H2PIA = 5-(1H-pyrazol-3-yl)isophthalic-acid), was structurally characterized as a three-dimensional skeleton structure in which layered coordination frameworks are connected by hydrogen bonds. Based on the antenna effect, Tb-MOF can emit bright green fluorescence under 254 nm excitation, and the fluorescence emission presents excell… Show more

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Cited by 30 publications
(17 citation statements)
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“…Comparing to results in the literature obtained by fluorescent sensors shows LOD values very close to those obtained for phosphate, such as 4.5×10 −6 or 4.5 ppm [30] for Tb‐MOF; 4.3×10 −9 mol dm −3 for Eu‐complex based FRET; [31] 2.9×10 −8 mol dm −3 for copper complex [32] and as colorimetric sensors about 3.00×10 −8 mol dm −3 , [8] depicting chemosensor 1 can detect low concentrations of these anions above using the UV‐Vis method and are according to results from the literature.…”
Section: Resultssupporting
confidence: 81%
“…Comparing to results in the literature obtained by fluorescent sensors shows LOD values very close to those obtained for phosphate, such as 4.5×10 −6 or 4.5 ppm [30] for Tb‐MOF; 4.3×10 −9 mol dm −3 for Eu‐complex based FRET; [31] 2.9×10 −8 mol dm −3 for copper complex [32] and as colorimetric sensors about 3.00×10 −8 mol dm −3 , [8] depicting chemosensor 1 can detect low concentrations of these anions above using the UV‐Vis method and are according to results from the literature.…”
Section: Resultssupporting
confidence: 81%
“…Phosphorus (P) is referred to as a limiting nutrient in the context of water degradation through eutrophication. Excess P concentration can trigger abnormal growth of aquatic plants, particularly, algae . Many researchers have provided evidence highlighting the acceleration of eutrophication when P concentration exceeds 0.02 mg L –1 .…”
Section: Introductionmentioning
confidence: 99%
“…Zhao et al prepared Tb-MOF based on 5-(1H-pyrazol-3-yl)isophthalic acid (H 2 pia) [146]. Free H 2 pia ligand displayed an emission peak at 393 nm upon excitation at 331 nm.…”
Section: Benzimidazole Derivativesmentioning
confidence: 99%