Insights for applying erythrosine B as a green fluorescence probe for estimation of anticancer tamoxifen and its analog; clomiphene in nanogram concentration

A simple coumarin-based Schiff base (probe L) was successfully developed. It showed strong green fluorescence emission at 527 nm with a 70.3% of fluorescence quantum efficiency (ΦF). However, after the addition of common metal ions, probe L can only combine with Cu2+ ions and displayed significant fluorescence quenching of > 96.2% (ΦF = 2.7%) due to the paramagnetic quenching action from Cu2+. Conversely, by the coordination action of cysteine (Cys) and histidine (His), the quenching fluorescence of the complex (L-Cu2+) between probe L and Cu2+ ions was recovered mostly because the Cys and His can usurp Cu2+ of L-Cu2+ and led to the liberation of probe L. Based on the fluorescence changes of probe L with the actions of Cu2+, Cys, and His, an on–off–on reversible fluorescence probe for sensitive and specific monitoring Cu2+, Cys, and His has been prepared. More importantly, the probe L and L-Cu2+ ensemble can be used, respectively, to test Cu2+ and Cys/His in live cells and human urine samples with great reliability.

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Nitrogen and sulfur co-doped carbon dots: A facile and green fluorescence probe for free chlorine

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2015.05.021 ◽

2015 ◽

Vol 219 ◽

pp. 50-56 ◽

Cited By ~ 77

Author(s):

Mingyue Xue ◽

Liangliang Zhang ◽

Mengbing Zou ◽

Chuanqing Lan ◽

Zhihua Zhan ◽

...

Keyword(s):

Carbon Dots ◽

Fluorescence Probe ◽

Free Chlorine ◽

Green Fluorescence ◽

Doped Carbon Dots ◽

Co Doped

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Quantification of the Ozone Dose Delivered into a Liquid by Indirect Plasma Treatments: Method and Calibration of the Pittsburgh Green Fluorescence Probe

Plasma Chemistry and Plasma Processing ◽

10.1007/s11090-018-9923-1 ◽

2018 ◽

Vol 38 (6) ◽

pp. 1169-1179 ◽

Cited By ~ 2

Author(s):

A. Wright ◽

J. Fuster ◽

A. Shaw ◽

H. Bandulasena ◽

B. R. Buckley ◽

...

Keyword(s):

Fluorescence Probe ◽

Green Fluorescence ◽

Plasma Treatments ◽

Ozone Dose

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Determination of yellow-green fluorescence in corn grain

Khleboproducty ◽

10.32462/0235-2508-2020-29-5-52-53 ◽

2020 ◽

Vol 29 (5) ◽

pp. 52-53

Author(s):

A.V. Yaitskikh ◽

◽

O.I. Bundina ◽

D.S. Stepanenko ◽

◽

...

Keyword(s):

Green Fluorescence ◽

Corn Grain

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Determination of the topology of microsomal 17[beta]-hydroxysteroid dehydrogenase enzymes using redox-sensitive green fluorescence protein fusions

Endocrine Abstracts ◽

10.1530/endoabs.37.gp.05.03 ◽

2015 ◽

Author(s):

Maria Tsachaki ◽

Julia Birk ◽

Alex Odermatt

Keyword(s):

Green Fluorescence Protein ◽

Hydroxysteroid Dehydrogenase ◽

Green Fluorescence ◽

Fluorescence Protein

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A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

10.26434/chemrxiv.12982019 ◽

2020 ◽

Author(s):

Junxia Ren ◽

Yaozu Liu ◽

Xin Zhu ◽

Yangyang Pan ◽

Yujie Wang ◽

...

Keyword(s):

Molecular Recognition ◽

Fluorescence Probe ◽

Three Dimensional ◽

Hazardous Substances ◽

Covalent Organic Framework ◽

Highly Sensitive ◽

Volatile Organic ◽

Polycyclic Aromatic ◽

Better Than ◽

Organic Framework

<a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (KSV) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.

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