A Sensor for the Detection of Cr (III) and Fe (III) Ions Based on “Turn Off” Mechanism of Fluorescence with Computational Studies

Fernandes, Patrick; Mishra, Divya

doi:10.1007/s10895-021-02787-0

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…The paramagnetic properties of Fe 3 + ions deactivate the excited state and follow the non-radiative relaxation pathway, which is responsible for fluorescence quenching. [46][47][48] Further, Job's plot displayed intersection at 0.5 for all probes, thus supporting the 1 : 1 stoichiometry of these probes with Fe 3 + ions (Figures 9 and S48).…”

Section: Metal Ion Recognition Studiessupporting

confidence: 61%

“…Similarly, upon addition of 5 eq of Fe 3+ ions, the emission intensity gradually quenched with 94 % ( 2 a ), 99 % ( 1 b ), 95 % ( 2 b ), and 95 % ( 3 b ) efficiency, the quenching efficiency plots are given in Figures 7 and 8 and S46–S47. The paramagnetic properties of Fe 3+ ions deactivate the excited state and follow the non‐radiative relaxation pathway, which is responsible for fluorescence quenching [46–48] . Further, Job's plot displayed intersection at 0.5 for all probes, thus supporting the 1 : 1 stoichiometry of these probes with Fe 3+ ions (Figures 9 and S48).…”

Section: Photophysical Studiesmentioning

confidence: 65%

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N, N’‐Disubstituted Benzimidazolium Salts: Synthesis, Characterization, Micromolar Detection of Fe(III) ions in Aqueous system, Biological Evaluation and Molecular Docking Studies

et al. 2022

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A series of dicationic N, N’‐disubstituted benzimidazolium salts with Br− and PF6− as the counter anions were synthesized in 75–98 % yields. The single crystal X‐ray diffraction studies of one of the benzimidazolium salts confirmed the structure of these dicationic compounds. These salts exhibited a selective “turn‐off” fluorescence response toward Fe3+ ions in aqueous solution over the other competitive metal ions such as Ag+, Al3+, Ba2+, Ca2+, Co2+, Cr3+, Cu2+, Fe2+, K+, Mg2+, Na+, Ni2+, Pb2+, and Zn2+. Upon addition of 5 equivalents Fe3+ ions, emission intensity was quenched by 94–99 % in pure aqueous media. Detection limits for all probes with Fe3+ ions were found in micromolar range. Further, drug combination analysis was conducted by evaluating the combinatorial treatment effects of two benzimidazolium salts with doxorubicin on breast cancer cells using the Chou‐Talalay method and the Highest Single Agent (HSA) model, and it was found that these compounds showed synergism with doxorubicin. Further, molecular docking studies revealed the best docking score (−6.11) for one of the benzimidazolium salts, and explained its binding affinity with checkpoint kinase 2 (chk2) protein.

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Section: Metal Ion Recognition Studiessupporting

confidence: 61%

Section: Photophysical Studiesmentioning

confidence: 65%

N, N’‐Disubstituted Benzimidazolium Salts: Synthesis, Characterization, Micromolar Detection of Fe(III) ions in Aqueous system, Biological Evaluation and Molecular Docking Studies

et al. 2022

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“…Dansulfonyl chloride has drawn widespread attention as a fluorophore owing to its strong fluorescence, long emission wavelength (400-600 nm), large Stokes shift (330-350 nm), and easy modification. Based on these considerations, DNSC-CTV was published as a novel cyclotrisveratrole-derived chemosensor modified with dansyl chloride [130]. It works well for Cr 3+ recognition in ACN.…”

Section: Fluorescent Probes To Detect Cr 3+mentioning

confidence: 99%

Recent Progress on Fluorescent Probes in Heavy Metal Determinations for Food Safety: A Review

et al. 2023

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One of the main challenges faced in food safety is the accumulation of toxic heavy metals from environmental sources, which can sequentially endanger human health when they are consumed. It is invaluable to establish a practical assay for the determination of heavy metals for food safety. Among the current detection methods, technology based on fluorescent probes, with the advantages of sensitivity, convenience, accuracy, cost, and reliability, has recently shown pluralistic applications in the food industry, which is significant to ensure food safety. Hence, this review systematically presents the recent progress on novel fluorescent probes in determining heavy metals for food safety over the past five years, according to fluorophores and newly emerging sensing cores, which could contribute to broadening the prospects of fluorescent materials and establishing more practical assays for heavy metal determinations.

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Progress in appended calix[4]arene-based receptors for selective recognition of copper ions

Kashyap

Sharma

Gohil

et al. 2023

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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A Sensor for the Detection of Cr (III) and Fe (III) Ions Based on “Turn Off” Mechanism of Fluorescence with Computational Studies

Cited by 4 publications

References 29 publications

N, N’‐Disubstituted Benzimidazolium Salts: Synthesis, Characterization, Micromolar Detection of Fe(III) ions in Aqueous system, Biological Evaluation and Molecular Docking Studies

N, N’‐Disubstituted Benzimidazolium Salts: Synthesis, Characterization, Micromolar Detection of Fe(III) ions in Aqueous system, Biological Evaluation and Molecular Docking Studies

Recent Progress on Fluorescent Probes in Heavy Metal Determinations for Food Safety: A Review

Progress in appended calix[4]arene-based receptors for selective recognition of copper ions

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