Highly selective speciation and fluorimetric determination of Se(iv) in infant formulas using micelle-capped nile blue A

Zhu, Jinghui; Liu, Shaopu; Liu, Zhongfang; Li, Yuanfang; Qiao, Man; Hu, Xiaoli

doi:10.1039/c3ra43513j

Cited by 8 publications

(4 citation statements)

References 17 publications

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“…Fluorescence quenching behaviours include dynamic and static quenching . The former is due to collision between quenching agent and the fluorophor, while the latter results from the formation of a non‐luminous complex.…”

Section: Resultsmentioning

confidence: 99%

Development of an optical sensor for chlortetracycline detection based on the fluorescence quenching of l‐tryptophan

et al. 2017

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A simple and selective spectrofluorimetric method for the detection of chlortetracycline (CTC) was studied. In pH 7.4 buffer medium l-tryptophan (l-Trp), applied as the fluorescence probe, interacted with CTC resulting in fluorescence quenching of the probe. CTC was detected with maximum excitation and emission wavelengths at λ /λ = 275/350 nm. Notably, quenching of fluorescence intensities was positively proportional to the CTC concentration over the range of 0.65-30 μmol L and the limit of detection was 0.2 μmol L . Effect of temperature shown in Stern-Volmer plots, absorption spectra and fluorescence lifetime determination, indicated that fluorescence quenching of l-Trp by CTC was mainly by static quenching. The proposed study used practical samples analysis satisfactorily.

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Section: Resultsmentioning

confidence: 99%

Development of an optical sensor for chlortetracycline detection based on the fluorescence quenching of l‐tryptophan

et al. 2017

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“…Other kinds of nanostructure-based probes for Se(IV) exist, such as those that utilize micelles and QDs. Zhu et al 46 reported the results of a study of micelle-capped Nile blue A (MCNBA) as an Se(IV) probe. The mechanism for the response of this probe involves oxidation of the micelle by selenite under neutral conditions (pH 7.0).…”

Section: Fluorescent Probes For Se(iv)mentioning

confidence: 99%

Fluorescent Probes Containing Selenium as a Guest or Host

Chen

Kwon

et al. 2016

Chem

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Selenium is an important trace element in living systems. Proteins incorporating selenium have a wide range of biological effects, ranging from anti-oxidant and antiinflammatory effects to the production of active thyroid hormones. In the past decades, selenium has drawn enormous attention because of its important role in biology, which can be ascribed partly if not solely to its redox and hard and soft donor properties. With the use of chemical mimicry, a large number of seleniumrelated fluorescent probes have been developed for monitoring physiological and pathological processes. This review, which summarizes recent progress made in this area, comprises two major sections. In the first section, fluorescent probes for selenium-containing species, such as selenocysteine (Sec), hydrogen selenide, thioredoxin reductases (TrxRs), and selenite, are described. This is followed by a discussion of fluorescent probes that contain selenium and detect reactive oxygen, nitrogen, and sulfur species, as well as cations and anions.

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“…It is a commercially available probe and features good chemical stability, high quantum yield and a long fluorescence lifetime . The substitution of three sulfonic groups on the pyrene ring brings with it excellent water solubility and carries a strong negative charge . BRH is a positively charged molecule that may promote the electrostatic interaction between HPTS and BRH.…”

Section: Introductionmentioning

confidence: 99%

Rapid and visual detection of berberine hydrochloride based on a water‐soluble pyrene derivative

Guo

Sun

et al. 2019

Luminescence

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In this study, a rapid method for the detection of berberine hydrochloride (BRH) was developed based on a water-soluble pyrenyl probe, 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS). This method features low cost, good selectivity, high sensitivity and a fast response. The sensing mechanism of this probe is attributed to the formation of a complex between HPTS and BRH induced by electrostatic interaction and π-π stacking. To the best of our knowledge, this is the first fluorescent sensor for BRH based on organic materials that has low cost and a visual response. The detection limit of this method was as low as 1.24 μM and the linear response range is 2-50 μM. This method also allowed rapid detection of BRH real samples.

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Highly selective speciation and fluorimetric determination of Se(iv) in infant formulas using micelle-capped nile blue A

Cited by 8 publications

References 17 publications

Development of an optical sensor for chlortetracycline detection based on the fluorescence quenching of l‐tryptophan

Development of an optical sensor for chlortetracycline detection based on the fluorescence quenching of l‐tryptophan

Fluorescent Probes Containing Selenium as a Guest or Host

Rapid and visual detection of berberine hydrochloride based on a water‐soluble pyrene derivative

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