An Efficient Fluorescent Probe for Tetracycline Detection Based on Histidine‐Templated Copper Nanoclusters

Cai, Zhiyong; Zhu, Ruizhi; Chen, Siying; Wu, Liangliang; Qi, Kaifei; Zhang, Caifeng

doi:10.1002/slct.202000398

Cited by 15 publications

(3 citation statements)

References 42 publications

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“…The test papers prepared with Au NCs could monitor the TC as low as 1 mg/L by naked eyes [ 106 ]. Similarly, TC could interact with the surface groups of dopamine protected Cu NCs and histidine stabilized Cu NCs, which facilitating energy trapping of Cu NCs by forming new bonds and inducing the PL quenching of Cu NCs [ 107 , 108 ].…”

Section: Fluorescent Sensors For Detection Of Food Contaminantsmentioning

confidence: 99%

Perspective on recent developments of nanomaterial based fluorescent sensors: applications in safety and quality control of food and beverages

Han¹,

Hao²,

Yang³

et al. 2020

Journal of Food and Drug Analysis

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As the highly toxic pollutants will seriously harm human health, it is particularly important to establish the analysis and detection technology of food pollutants. Compared with the traditional detection methods, fluorescent detection techniques based on nanomaterials trigger wide interesting because of reduced detection time, simple operation, high sensitivity and selectivity, and economic. In this review, the application of fluorescent sensors in food pollutants detection is presented. Firstly, conventional fluorescent nanomaterials including metal-based quantum dots, carbon dots, graphene quantum dots and metal nanoclusters were summarized, with emphasis on the photoluminescence mechanism. Then, the fluorescence sensors based on these nanomaterials for food pollutants detection were discussed, involving in the established methods, sensor mechanisms, sensitivity, selectivity, and practicability of fluorescence sensors. The selected analytes focus on five types of higher toxic food pollutants, including mycotoxins, foodborne pathogens, pesticide residues, antibiotic residues, and heavy metal ions. Finally, outlook on the future and potential development of fluorescence detection technology in the field of food science were proposed, including green synthesis and reusability of fluorescence probes, large-scale industrialization of sensors, nondestructive testing of samples and degradation of harmful substances.

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Section: Fluorescent Sensors For Detection Of Food Contaminantsmentioning

confidence: 99%

Perspective on recent developments of nanomaterial based fluorescent sensors: applications in safety and quality control of food and beverages

Han¹,

Hao²,

Yang³

et al. 2020

Journal of Food and Drug Analysis

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show abstract

“…Recently, the strategy based on AIE has garnered significant research attention by tuning the optical properties of MNCs. − In contrast to Ag and AuNCs, CuNCs are relatively less explored because of their instability after formation. Unlike AgNCs , and AuNCs, − the preparation of highly stable luminescent CuNCs is still challenging owing to their inherent propensity to get oxidized under ambient conditions and greater tendency to aggregate in aqueous solution. − Additionally, the lower reduction potential of Cu ( E 0 = 0.34 V) compared to those of Ag ( E 0 = 0.80 V) and Au ( E 0 = 1.50 V) further limits the development of CuNCs . In a seminal work, Cai and co-workers reported the preparation of ascorbic acid (AA)-templated monodispersed CuNCs, which were highly photostable and were used in the detection of quercetin in bovine serum albumin .…”

Section: Introductionmentioning

confidence: 99%

White Light Generation through l-Ascorbic Acid-Templated Thermoresponsive Copper Nanoclusters

Shekhar

Mahato

Yadav

et al. 2022

ACS Sustainable Chem. Eng.

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Owing to their lower toxicity and tuneable optical properties, luminescent copper nanoclusters (CuNCs) have emerged as a new generation of materials with multidiverse applications in cellular imaging, sensing, and optoelectronics. However, the preparation of highly stable CuNCs using a small ligand as a template still serves as a bottleneck in the development of nanoclusters. Herein, we report ascorbic acid (AA)-templated blue-emitting CuNCs that display excellent thermoresponsive properties within a temperature range of 25−65 °C. Interestingly, our as-prepared CuNCs can generate white light emission (WLE) when mixed with bovine serum albumin (BSA)templated red-emitting silver nanoclusters (AgNCs) under optimized conditions. The WLE so generated was characterized by the Commission Internationale d'Eclairage (CIE) coordinates of (0.33, 0.30), a color rendering index (CRI) of 80, and a correlated color temperature (CCT) of 5624 K, parameters that are very close to those of pure white light. The cell viability data and confocal laser scanning microscopy images of HeLa cells obtained using these CuNCs substantiate their nontoxic and biocompatible nature.

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“…Because of the presence of the N-coordinating ligands of the imidazole ring and –COOH groups, L-his presents a remarkable affinity for Cu 2+ ions and can strongly chelate with Cu 2+ ions to form stable L-His–Cu 2+ complexes ( Elbaz et al, 2008 ; Zhang et al, 2013 ; Wang et al, 2017 ; Cai et al, 2020 ). Upon adding L-His to the assay, the Cu 2+ ion-catalyzed TMB oxidation to oxTMB in the presence of H 2 O 2 was inhibited.…”

Section: Introductionmentioning

confidence: 99%

A Convenient and Label-Free Colorimetric Detection for L-Histidine Based on Inhibition of Oxidation of 3,3′,5,5′-Tetramethylbenzidine-H2O2 System Triggered by Copper Ions

Zhang

Zhao

et al. 2021

Front. Chem.

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L-Histidine (L-His) is an essential amino acid, which is used to synthesize proteins and enzymes. The concentration of L-His in the body is controlled to regulate tissue growth and repair of tissues. In this study, a rapid and sensitive method was developed for colorimetric L-his detection using Cu2+ ions to inhibit the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB)–H2O2 system. H2O2 can oxidize TMB to oxTMB in the presence of copper, and the change in color from colorless (TMB) to blue (oxTMB) is similar to that observed in the presence of peroxidase. However, because the imidazole ring and carboxyl group of L-His can coordinate with Cu2+ ions to form stable L-His–Cu2+ complexes, the color of the TMB–H2O2 solution remains unchanged after the addition of L-His. Therefore, because L-His effectively hinders the colorimetric reaction of TMB with H2O2, this assay can be used to quantitatively determine the concentration of L-His in samples. Under optimized conditions, our colorimetric sensor exhibited two linear ranges of 60 nM to 1 μM and 1 μM to 1 mM for L-His detection and a detection limit of 50 nM (S/N = 3); furthermore, the assay can be performed within 20 min. Moreover, the proposed assay was used to determine the concentration of L-His in urine samples, suggesting that this convenient and label-free colorimetric method presents promising applications in bioanalytical chemistry and clinical diagnosis.

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An Efficient Fluorescent Probe for Tetracycline Detection Based on Histidine‐Templated Copper Nanoclusters

Cited by 15 publications

References 42 publications

Perspective on recent developments of nanomaterial based fluorescent sensors: applications in safety and quality control of food and beverages

Perspective on recent developments of nanomaterial based fluorescent sensors: applications in safety and quality control of food and beverages

White Light Generation through l-Ascorbic Acid-Templated Thermoresponsive Copper Nanoclusters

A Convenient and Label-Free Colorimetric Detection for L-Histidine Based on Inhibition of Oxidation of 3,3′,5,5′-Tetramethylbenzidine-H2O2 System Triggered by Copper Ions

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