Cu-BTC frameworks-based electrochemical sensing platform for rapid and simple determination of Sunset yellow and Tartrazine

Ji, Liudi; Cheng, Qin; Wu, Kangbing; Yang, Xiao-Feng

doi:10.1016/j.snb.2016.03.012

Cited by 93 publications

(39 citation statements)

References 18 publications

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“…Of the many different kinds of detection methods,− fluorescent probes have received extensive attention as useful tool to sense different bio‐relevant ions including Cu(II), as a result of their specificity and sensitivity monitoring with fast response time In contrast, sensing of Cu(II) in 100% aqueous media still represents a significant challenge.…”

Section: Introductionmentioning

confidence: 97%

Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium

et al. 2019

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Ruthenium(II) polypyridyl linked di‐(2‐picolyl)amine (DPA) based chemosensor [Ru(bpy)2(bpmpip)](PF6)2 (Ru‐L) has been developed for the selective detection of Cu(II) ion in purely aqueous medium. The change in absorbance and emission spectra of chemosensor Ru‐L was observable upon addition of Cu2+ ion. Competitive binding studies, detection limit (18.9 nM) and binding constants illustrate significant sensing ability of chemosensor Ru‐L. Spectral behaviour of chemosensor Ru‐L at different pH was also investigated in absence and presence of Cu2+ ion. Binding of Cu2+ to Ru‐L occurs in 1:1 stoichiometry, in good agreement with the results obatined from ESI‐mass spectrometry, Job's plot experiment and spectroscopic titrations. The emission intensity of Ru‐L was selectively quenched by Cu2+ ion and an obvious color change from red orange to yellow in aqueous solution as well as on paper strips was observed under UV light. The reversibility cycles for the detection of Cu2+ ion were achieved by EDTA and corresponding logic gate was also developed. The water solubility, reversibility and optical visualization of the present chemosensor make it ideal for practical applications on real samples.

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Section: Introductionmentioning

confidence: 97%

Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium

et al. 2019

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“…However, synthetic colorants must be controlled strictly by the laws because of their potential risks to human health caused by the presence of azo groups (−N=N−) and aromatic ring structures [1]. Sunset Yellow (SY) is a widely used synthetic colorant, which not only can improve the appearance and texture of foods but can also maintain their natural color during process and storage [2].…”

Section: Introductionmentioning

confidence: 99%

“…Sunset Yellow (SY) is a widely used synthetic colorant, which not only can improve the appearance and texture of foods but can also maintain their natural color during process and storage [2]. However, excess intake of SY can cause many adverse health effects, such as allergies, migraines, eczema, anxiety, and childhood hyperactivity, if excessively consumed [1]. Therefore, the use of SY in food products is strictly controlled.…”

Section: Introductionmentioning

confidence: 99%

“…IDA has become a popular approach for electrochemical/optical sensing by utilizing noncovalent interactions between a receptor (the host), indicator (the guest), and an analyte (the competitive guest) [1]. The sensing principle of IDA relies on the competition between a test substance and an indicator for the same binding site on the host [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Label-Free Fluorescent Determination of Sunset Yellow in Soft Drinks Based on an Indicator-Displacement Assay

Zhang

Yang

et al. 2018

Journal of Food Quality

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This work reported a fluorescence sensing platform for Sunset Yellow (SY) determination based on competitive host-guest interaction between cucurbit [7]uril (CB7) and signal probe/target molecules. Luteolin/epigallocatechin gallate (EGCG) and SY were selected as the probe and target molecules, respectively. When luteolin or EGCG entered the CB7 host, its fluorescence significantly improved. However, upon the presence of SY in the performed luteolin⋅CB7 or EGCG⋅CB7 complex, this led to a remarkable decrease in fluorescence. This result was due to the fact that the binding constant of CB7/SY (4.9 × 10 4 M −1 ) was greater than that of CB7/luteolin (3.2×10 3 M −1 ) or CB7/EGCG (4.8×10 3 M −1 ). The fluorescence intensities of CB7/luteolin and CB7/EGCG complexes decreased linearly with increased SY concentration ranges of 0.5-50.0 and 2.0-50.0 M. The proposed method had detection limits of 0.12 and 0.45 M and was successfully used to determine SY samples with good recoveries ranging from 96.3% to 103.8%. This competitive mode provided a promising fluorescence assay strategy for potential applications in food safety.

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“…During recent years, a variety of instrumental techniques including electrochemical analysis (EC) [6], atomic absorption spectrometry (AAS) [7], inductively coupled plasma mass spectrometry (ICP-MS) [8] have been applied for the copper detection. However, these conventional methods are not suitable for routine detection due to the disadvantages of costly instruments, time-consuming process and complicated sample preparation.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent ZnCdSe/ZnS QDs probes for sensitive copper (II) detection

Qin

Yue

Liu

2018

Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)

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Considering the fact that copper (II) (Cu 2+) act as a dietary need but toxic metal ions, its detection and quantification is very much important for human healthy diet and environmental risk assessment. Herein, we introduced a sensitive fluorescence sensor for the detection of Cu 2+ based on ZnCdSe/ZnS QDs, whose fluorescence quenching was well linear with Cu 2+ concentration. And a detection limit as low as 5 nM was obtained. Moreover, the recovery experiment was performed and the satisfactory recovery rate was obtained. The results indicated that the proposed ZnCdSe/ZnS QDs probes possessed a good performance for the detection of Cu 2+. Therefore, a effective fluorescence sensor was developed for the detection of Cu 2+ at a sensitive level.

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Cu-BTC frameworks-based electrochemical sensing platform for rapid and simple determination of Sunset yellow and Tartrazine

Cited by 93 publications

References 18 publications

Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium

Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium

Label-Free Fluorescent Determination of Sunset Yellow in Soft Drinks Based on an Indicator-Displacement Assay

Fluorescent ZnCdSe/ZnS QDs probes for sensitive copper (II) detection

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