Pyrene excimer-based fluorescent sensor for detection and removal of Fe3+ and Pb2+ from aqueous solutions

Zhao, Meili; Zhou, Xing; Tang, Jian; Deng, Zhifu; Xu, Xuan; Chen, Zhi; Li, Xutian; Yang, Liting; Ma, Lijun

doi:10.1016/j.saa.2016.09.033

Cited by 37 publications

(14 citation statements)

References 25 publications

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“…[ ] Systems were designed with (i) podand, crown ether, or calixarene‐based fragments for cation binding, (ii) covalently linked pyrenes acting as fluorophores and, upon the presence or absence of metal cations, (iii) sufficiently different conformations to modulate the fluorescence . [ ] For instance, Nakamura et al . reported the synthesis of an alkaline and alkaline earth metal cation sensor composed of a non‐cyclic polyether and two terminal pyrenyl units ( Figure , left) .…”

Section: Introductionmentioning

confidence: 99%

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Vishe

Lathion

Pascal

et al. 2017

Helvetica Chimica Acta

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A series of bis(pyreneamide) macrocycles, synthesized in two steps from THF, THP, oxepane and 1,4-dioxane, are tested as chemosensors for a large range of mono-, di-and trivalent cations. In their native states, these macrocycles exhibit a strong excimer fluorescence that is quenched upon the addition of the metal ions (alkaline, alkaline earth, p-, d-, and f-block metals). UV-Vis spectrophotometric titrations, cyclic voltammetry, excimer fluorescence quenching, and transient absorption spectroscopy experiments helped characterize the On-Off changes occurring upon binding and demonstrate that the highest stability constants are obtained with divalent cations Ca 2+ and Ba 2+ specifically.

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Section: Introductionmentioning

confidence: 99%

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Vishe

Lathion

Pascal

et al. 2017

Helvetica Chimica Acta

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“…formation of flocculates upon the generation of an iron complex of a pyrene sensor that led to fluorescence quenching has been reported. [51] The aggregation process was found to be reversible as shown by the disappearance of the agglomerates upon addition of an equally concentrated solution of 3 until the concentration of Cu 2 + is reduced to 60 eq, and their slow reformation after about 30 min as shown by DLS (see Figure S9 for details). As can be deduced from the volume distribution determined by DLS, 90 % of the agglomerates are smaller than 3.5 nm in diameter.…”

Section: Stern-volmer Plotsmentioning

confidence: 91%

Pyrene‐Based “Turn‐Off” Probe with Broad Detection Range for Cu²⁺, Pb²⁺ and Hg²⁺ Ions

Merz

Kirchner

et al. 2021

Chemistry A European J

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Detection of metals in different environments with high selectivity and specificity is one of the prerequisites of the fight against environmental pollution with these elements. Pyrenes are well suited for the fluorescence sensing in different media. The applied sensing principle typically relies on the formation of intra-and intermolecular excimers, which is however limiting the sensitivity range due to masking of e. g. quenching effects by the excimer emission. Herein we report a highly selective, structurally rigid chemical sensor based on the monomer fluorescence of pyrene moieties bearing triazole groups. This sensor can quantitatively detect Cu 2 + , Pb 2 + and Hg 2 + in organic solvents over a broad concentrations range, even in the presence of ubiquitous ions such as Na + , K + , Ca 2 + and Mg 2 + . The strongly emissive sensor's fluorescence with a long lifetime of 165 ns is quenched by a 1 : 1 complex formation upon addition of metal ions in acetonitrile. Upon addition of a tenfold excess of the metal ion to the sensor, agglomerates with a diameter of about 3 nm are formed. Due to complex interactions in the system, conventional linear correlations are not observed for all concentrations. Therefore, a critical comparison between the conventional Job plot interpretation, the method of Benesi-Hildebrand, and a non-linear fit is presented. The reported system enables the specific and robust sensing of medically and environmentally relevant ions in the healthrelevant nM range and could be used e. g. for the monitoring of the respective ions in waste streams.

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“…Esto se explica por la precipitación del Fe 3+ , dada la alta tendencia a formar hidróxido férrico a valores de pH mayores a 2.2. Este hidróxido, además de ser un precipitado floculante, tiene un fuerte carácter básico (Zhao et al, 2017). Se obtuvo una remoción de hasta 100% de la dureza.…”

Section: Remoción De Iones Presentes En Aguas Residuales Municipales unclassified

Uso de zeolita faujasita para adsorción de iones en aguas residuales municipales

Vega

González

Gallego

et al. 2018

Tecnol. cienc. agua

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Pyrene excimer-based fluorescent sensor for detection and removal of Fe3+ and Pb2+ from aqueous solutions

Cited by 37 publications

References 25 publications

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Pyrene‐Based “Turn‐Off” Probe with Broad Detection Range for Cu²⁺, Pb²⁺ and Hg²⁺ Ions

Uso de zeolita faujasita para adsorción de iones en aguas residuales municipales

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Pyrene excimer-based fluorescent sensor for detection and removal of Fe3+ and Pb2+ from aqueous solutions

Cited by 37 publications

References 25 publications

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Excimer‐Based On‐Off Bis(pyreneamide) Macrocyclic Chemosensors

Pyrene‐Based “Turn‐Off” Probe with Broad Detection Range for Cu2+, Pb2+ and Hg2+ Ions

Uso de zeolita faujasita para adsorción de iones en aguas residuales municipales

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Product

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Pyrene‐Based “Turn‐Off” Probe with Broad Detection Range for Cu²⁺, Pb²⁺ and Hg²⁺ Ions