Poly thymine stabilized copper nanoclusters as a fluorescence probe for melamine sensing

Zhu, Hongwei; Dai, Wen-Xia; Yu, Xiao-Dong; Xu, Jing‐Juan; Chen, Hong‐Yuan

doi:10.1016/j.talanta.2015.07.022

Cited by 49 publications

(18 citation statements)

References 45 publications

(33 reference statements)

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“…Luminescent copper nanoclusters were also engaged in melamine sensing as described next. Polythymine-stabilized copper nanoclusters were utilized for melamine recognition via enhanced fluorescence of Cu NCs [61] as seen in Figure 8. The linear melamine assay concentration was fixed between 0.1 and 6 µM with a LOD of 95 nM and the recoveries of spiked milk samples were established at 92 to 110% with 2~9.8% RSDs Figure 7.…”

Section: Metal Nanoclusters Towards Melamine Determinationmentioning

confidence: 99%

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Review on Nanomaterial-Based Melamine Detection

Shellaiah

Sun

2019

Chemosensors

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Illegal adulteration of milk products by melamine and its analogs has become a threat to the world. In 2008, the misuse of melamine with infant formula caused serious effects on babies of China. Thereafter, the government of China and the US Food and Drug Administration (FDA) limited the use of melamine of 1 mg/kg for infant formula and 2.5 mg/kg for other dairy products. Similarly, the World Health Organization (WHO) has also limited the daily intake of melamine of 0.2 mg/kg body weight per day. Many sensory schemes have been proposed by the scientists for carrying out screening on melamine poisoning. Among them, nanomaterial-based sensing techniques are very promising in terms of real-time applicability. These materials uncover and quantify the melamine by means of diverse mechanisms, such as fluorescence resonance energy transfer (FRET), aggregation, inner filter effect, surface-enhanced Raman scattering (SERS), and self-assembly, etc. Nanomaterials used for the melamine determination include carbon dots, quantum dots, nanocomposites, nanocrystals, nanoclusters, nanoparticles, nanorods, nanowires, and nanotubes. In this review, we summarize and comment on the melamine sensing abilities of these nanomaterials for their suitability and future research directions.

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Section: Metal Nanoclusters Towards Melamine Determinationmentioning

confidence: 99%

“…A scheme illustrating the melamine sensing based on the fluorescence enhancement of copper nanoclusters (reproduced with permission from Reference[61]). …”

mentioning

confidence: 99%

Review on Nanomaterial-Based Melamine Detection

Shellaiah

Sun

2019

Chemosensors

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“…It has been reported that Cu‐NPs could utilize melamine to stabilize the ssDNA structure for improving the QYs of fluorescence. Using the strong interaction between melamine and thymine bases, single‐stranded poly(thymine) sequence could form a double‐stranded poly(thymine) sequence to enhance fluorescent intensities . Melamine (C 3 H 6 N 6 ), a white and odorless heterocycle compound, is owing to its high nitrogen content (66.6 % by mass) and low cost, which is illegally added to milk to increase its protein level that is conventionally measured by the Kjeldahl method .…”

Section: The Application Of Dna‐templated Cu‐nps Sensing Of Various Tmentioning

confidence: 99%

“…Using the strong interaction between melamine and thymine bases, single-stranded poly(thymine) sequence could form a doublestranded poly(thymine) sequence to enhance fluorescent intensities. [44] Melamine (C 3 H 6 N 6 ), a white and odorless heterocycle compound, is owing to its high nitrogen content (66.6 % by mass) and low cost, which is illegally added to milk to increase its protein level that is conventionally measured by the Kjeldahl method. [45] Therefore, excessive intake of melamine can induce the formation of insoluble melaminecyanurate cocrystals in kidney and renal damage in infants or even death.…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

“…They proved that it had the potential to achieve the different emission of fluorescence for biological sensing detection. [23,26,30] nnn nnn nn nnn nn Anion [15,36] Bio/chemical compound [39][40][43][44] DNA [54][55][58][59][60] Enzyme [66][67][68][70][71] Exosomes [78] Colorimetric DNA [61] nnn n nnn nn nnn Electrochemistry…”

Section: Other Biological Sensing Conceptsmentioning

confidence: 99%

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DNA‐Templated Copper Nanoprobes: Overview, Feature, Application, and Current Development in Detection Technologies

Chen

Shiddiky

et al. 2019

The Chemical Record

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Metal nanoprobes have recently attracted board research interestinr their application in establishing sensing systems due to their unique optical, electrical, physical, and chemical properties. In comparison to gold and silver nanoprobes, analytical platform based on copper nanoprobes (Cu‐NPs) is still in the early stages of development. In this review, we focus on single‐stranded, and double‐stranded DNA capped Cu‐NPs sensing systems which have been designed for various analytes, including metal ions, anions, small molecules, biomolecules (DNA, RNA, and protein, etc.). In addition, the application of Cu‐NPs in biological labeling or bio‐imaging platforms has also been introduced and summarized.

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Fluorescent sensing platform based on polyethyleneimine‐protected copper nanoclusters for detection of chromium(VI) in real samples

Gan,

Wang,

Wang

et al. 2024

Luminescence

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A new type of polyethyleneimine‐protected copper nanoclusters (PEI‐CuNCs) is favorably developed by a one‐pot method under mild conditions. The obtained PEI‐CuNCs is characterized by X‐ray diffraction, X‐ray photoelectron spectroscopy, transmission electron microscopy, Fourier‐transform infrared (FTIR) spectroscopy and other techniques. It is worth noting that the proposed PEI‐CuNCs demonstrate a selective response to chromium(VI) over other competitive species. Fluorescence quenching of PEI‐CuNCs is determined to be chromium(VI) concentrations dependence with a low limit of detection of 8.9 nM. What is more, the as‐developed PEI‐CuNCs is further employed in building a detection platform for portable recognition of chromium(VI) in real samples with good accuracy. These findings may offer a distinctive strategy for the development of methods for analyzing and monitoring chromium(VI) and expand their application in real sample monitoring.

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Poly thymine stabilized copper nanoclusters as a fluorescence probe for melamine sensing

Cited by 49 publications

References 45 publications

Review on Nanomaterial-Based Melamine Detection

Review on Nanomaterial-Based Melamine Detection

DNA‐Templated Copper Nanoprobes: Overview, Feature, Application, and Current Development in Detection Technologies

Fluorescent sensing platform based on polyethyleneimine‐protected copper nanoclusters for detection of chromium(VI) in real samples

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