Construction of a water-soluble fluorescent probe for copper (II) ion detection in live cells and food products

Sun, Hui; Xu, Qingyu; Chen, Xu; Zhang, Yukun; Ai, Jindong; Ren, Mingguang; Liu, Keyin; Kong, Fangong

doi:10.1016/j.foodchem.2023.135994

Cited by 20 publications

(2 citation statements)

References 33 publications

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“…Currently, a variety of fluorescent nanomaterials, including CDs [14], magnetic nanoparticles [15], fluorescent polymers [16], and novel metal nanoclusters [17], have been developed and applied as fluorescence sensors to determine Cu 2+ and thiram. Among them, the features of tunable photoluminescence and high quantum yield (QY) of CDs, as well as their lowcost preparation, make them offer potential outstanding advantages in the field of sensing [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

Zhang,

Jia,

Tong

et al. 2024

Methods Appl. Fluoresc.

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Food contaminants pose a danger to human health, but rapid, sensitive and reliable food safety detection methods can offer a solution to this problem. In this study, an optical fiber ratiometric fluorescence sensing system based on carbon dots (CDs) and o-phenylenediamine (OPD) was constructed. The ratiometric fluorescence response of Cu2+ and thiram was carried out by the fluorescence resonance energy transfer (FRET) between CDs and 2,3−diaminophenazine (ox-OPD, oxidized state o-phenylenediamine). The oxidation of OPD by Cu2+ resulted in the formation of ox-OPD, which quenched the fluorescence of CDs and exhibited a new emission peak at 573 nm. The formation of a [dithiocarbamate-Cu2+] (DTC-Cu2+) complex by reacting thiram with Cu2+, inhibits the OPD oxidation reaction triggered by Cu2+, thus turning off the fluorescence signal of OPD-Cu2+. The as-established detection system presented excellent sensitivity and selectivity for the detection of Cu2+ and thiram in the ranges of 1 ∼ 100 μM and 5 ∼ 50 μM, respectively. The lowest detection limits were 0.392 μM for Cu2+ and 0.522 μM for thiram. Furthermore, actual sample analysis indicated that the sensor had the potential for Cu2+ and thiram assays in real sample analysis.

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Section: Introductionmentioning

confidence: 99%

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

Zhang,

Jia,

Tong

et al. 2024

Methods Appl. Fluoresc.

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“…The presence of other interfering ions in the sample to be tested is inevitable, and it is possible that a variety of active small molecules are overexpressed in several lesioned cells. 21 Therefore, the probe needs to have good selectivity for Na 2 S changes in a complex environment. Next, it was studied whether the probe could specifically identify H 2 S in the presence of interfering substances and whether it could maintain stability in complex environments, mainly including inorganic salts, oxidizing species, proteins, and some sulfur-containing compounds.…”

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confidence: 99%

A highly sensitive and low toxicity cellulose-based fluorescent polymer for H₂S detection in cells, zebrafish and food samples

Sun

Chen

et al. 2023

Anal. Methods

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Synthesis and Properties of a Triphenylamine‐Based Fluorescent Probe for the Continuous Detection of Cu²⁺ and EDTA

Hu,

Yao,

Deng

et al. 2024

ChemistrySelect

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A fluorescent probe NS was successfully developed using triphenylamine aldehyde and 1‐hydroxy‐2‐naphthaldehyde. NS demonstrated selective recognition of Cu2+ in a DMSO/H2O solution, forming a stable 1 : 1 complex that led to fluorescence quenching. The addition of EDTA resulted in fluorescence recovery. The fluorescent intensity of NS showed a linear correlation with Cu2+ concentration within the range of 2~14 μmol ⋅ L−1, with a detection limit of 39 nmol ⋅ L−1 and a binding constant of 1.56×103 L mol−1. Additionally, the detection limit of the NS‐Cu2+ complex for EDTA was calculated to be 187 nmol ⋅ L−1. NS also displayed promising applications in the environmental and alcoholic drinks for detecting Cu2+ in water, wine, and Chinese Baijiu samples.

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Construction of a water-soluble fluorescent probe for copper (II) ion detection in live cells and food products

Cited by 20 publications

References 33 publications

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

A highly sensitive and low toxicity cellulose-based fluorescent polymer for H₂S detection in cells, zebrafish and food samples

Synthesis and Properties of a Triphenylamine‐Based Fluorescent Probe for the Continuous Detection of Cu²⁺ and EDTA

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Construction of a water-soluble fluorescent probe for copper (II) ion detection in live cells and food products

Cited by 20 publications

References 33 publications

Portable ratiometric fluorescence detection of Cu2+ and thiram

Portable ratiometric fluorescence detection of Cu2+ and thiram

A highly sensitive and low toxicity cellulose-based fluorescent polymer for H2S detection in cells, zebrafish and food samples

Synthesis and Properties of a Triphenylamine‐Based Fluorescent Probe for the Continuous Detection of Cu2+ and EDTA

Contact Info

Product

Resources

About

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

Portable ratiometric fluorescence detection of Cu²⁺ and thiram

A highly sensitive and low toxicity cellulose-based fluorescent polymer for H₂S detection in cells, zebrafish and food samples

Synthesis and Properties of a Triphenylamine‐Based Fluorescent Probe for the Continuous Detection of Cu²⁺ and EDTA