Novel rapid “turn on” tetrahydro-[5]helicene-based fluorescence sensor for selective detection of Cd2+ with a remarkable large Stokes shift and its applications in food samples and living cell

Petdum, Anuwut; Kaewnok, Nirawit; Panchan, Waraporn; Charoenpanich, Adisri; Sirirak, Jitnapa; Sahasithiwat, Somboon; Sooksimuang, Thanasat; Wanichacheva, Nantanit

doi:10.1016/j.jphotochem.2021.113578

Cited by 8 publications

(7 citation statements)

References 35 publications

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“…Despite this lack of native fluorescence, many methods have been proposed in recent years for their detection using luminescence-based techniques. In this respect, fluorescence-based sensors are very promising. ,,, …”

Section: Resultsmentioning

confidence: 99%

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Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

et al. 2022

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This contribution describes a novel method for the detection of trace amounts of trinitrotoluene (TNT) using a cluster of hexamolybdenum with general formula [Mo 6 Cl 14 ] 2– . The molybdenum cluster was characterized by UV–visible, FT-IR, and fluorescence techniques, and the synthesis was efficient and reproducible. The evaluation of the molybdenum cluster by TNT detection was perfomed by fluoresecent measurements, and the results were interpreted by the Stern–Volmer equation, obtaining K SV values of 2.9 × 10 5 and 1.6 × 10 4 M –1 in different concentration ranges. Further, the results suggest that at TNT concentrations higher than 4 × 10 –5 mM (0.01 mg L –1 ) it is possible to measure the quenching of the cluster fluorescence. The DFT calculations indicate that the contribution of the TNT in the active lowest unoccupied molecular orbitals that are involved in the higher intensity transitions in the complex cluster–TNT are significant. This situation differs from all the luminescent [M 6 X 8 L 6 ] 2– clusters (M = Mo; X = facial bridging ligand, and L = labile axial ligands), where most of the closely spaced excited states are located in the {M 6 X 8 } q + core. Thus, the TNT switches off the cluster luminescence. The approach using a [Mo 6 Cl 14 ] 2– -based fluorescence sensor has the potential to be a sensing technology for the detection of nitroaromatic explosives.

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Section: Resultsmentioning

confidence: 99%

“…In this respect, fluorescence-based sensors are very promising. 13,15,40,41 The quenching of the molybdenum cluster fluorescence by nitroaromatic compound was described using the Stern− Volmer equation. 42…”

Section: Resultsmentioning

confidence: 99%

Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

et al. 2022

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“…The sensors most commonly found in food analysis are optical sensors based on the change of fluorescent properties of nanomaterials through a turn-on/turn-off sensor (Petdum et al . 2022 ; Rong et al 2021 ). This term is used in the literature to indicate that the intensity of the fluorescence spectrum of the nanomaterial increases or decreases in the presence of the analyte, i.e ., fluorescence enhancement or fluorescence quenching, respectively (Marimuthu et al 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Nano-Nutraceuticals for Health: Principles and Applications

Magne

Alencar

Carneiro

et al. 2022

Rev. Bras. Farmacogn.

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The use of nanotechnological products is increasing steadily. In this scenario, the application of nanotechnology in food science and as a technological platform is a reality. Among the several applications, the main use of this technology is for the development of foods and nutraceuticals with higher bioavailability, lower toxicity, and better sustainability. In the health field, nano-nutraceuticals are being used as supplementary products to treat an increasing number of diseases. This review summarizes the main concepts and applications of nano-nutraceuticals for health, with special focus on treating cancer and inflammation. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s43450-022-00338-7.

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“…These ingested cadmiums may cause nervous system diseases, kidney abnormalities and liver damages. As a result, the maximum cadmium ion (Cd 2+ ) concentrations in food are limited to 0.2 mg/kg by the International World Health Organization (WHO) and the Food and Agriculture Organization of the United Nations [1,[5][6] . In addition, the International World Health Organization (WHO) has pointed out that rice and wheat have the highest Cd concentration in food [1] .…”

Section: Introductionmentioning

confidence: 99%

Fluorescence sensor based on IFE between AEP@UCNPs and oxTMB for the determination of Cd ²⁺ in paddy rice combined with HRP enzyme inhibition mechanism

Ding,

Hou,

Zhao

et al. 2024

Food Science and Human Wellness

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Cadmium ion (Cd 2+ ) detection technology plays a prominent role in food safety and human health. Herein, we designed and constructed an 2-aminoethyl dihydrogen phosphate (AEP)@upconversion nanoparticles (UCNPs) fluorescence sensor for quantitative detection of Cd 2+ in paddy rice based on Inner filter effect (IFE) combined with enzyme inhibition mechanism. The AEP modification UCNPs can offer a stable fluorescence donor at 658 nm and be quenched by the oxidized tetramethylbenzidine (oxTMB) catalyzed by horseradish peroxidase (HRP) enzymes. Without addition of Cd 2+ , the fluorescence of AEP@UCNPs fluorescence sensor was weaken due to the IFE between AEP@UCNPs and oxTMB. With addition of Cd 2+ , HRP enzyme activity was inhibited by Cd 2+ , leading to the decreased oxTMB, resulting in the enhance upconversion fluorescence intensity. As a result, the fluorescence intensity signal at 658 nm of the IFE-based AEP@UCNPs fluorescence sensor increased linearly with the increase in Cd 2+ in a wide range from 0.5 μmol/L to 6 μmol/L and the limit of detection (LOD) was 24.6 nmol/L. In addition, our proposed IFE-based AEP@UCNPs fluorescence sensor can achieve Cd 2+ detection in paddy rice in 30 min.

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Novel rapid “turn on” tetrahydro-[5]helicene-based fluorescence sensor for selective detection of Cd2+ with a remarkable large Stokes shift and its applications in food samples and living cell

Cited by 8 publications

References 35 publications

Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

Nano-Nutraceuticals for Health: Principles and Applications

Fluorescence sensor based on IFE between AEP@UCNPs and oxTMB for the determination of Cd ²⁺ in paddy rice combined with HRP enzyme inhibition mechanism

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Novel rapid “turn on” tetrahydro-[5]helicene-based fluorescence sensor for selective detection of Cd2+ with a remarkable large Stokes shift and its applications in food samples and living cell

Cited by 8 publications

References 35 publications

Cluster of Hexamolybdenum [Mo6Cl14]2– for Sensing Nitroaromatic Compounds

Cluster of Hexamolybdenum [Mo6Cl14]2– for Sensing Nitroaromatic Compounds

Nano-Nutraceuticals for Health: Principles and Applications

Fluorescence sensor based on IFE between AEP@UCNPs and oxTMB for the determination of Cd 2+ in paddy rice combined with HRP enzyme inhibition mechanism

Contact Info

Product

Resources

About

Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

Cluster of Hexamolybdenum [Mo₆Cl₁₄]^2– for Sensing Nitroaromatic Compounds

Fluorescence sensor based on IFE between AEP@UCNPs and oxTMB for the determination of Cd ²⁺ in paddy rice combined with HRP enzyme inhibition mechanism