Chromone functionalized pyridine chemosensor for cupric ions detection

Bhalla, Parul; Tomer, Nisha; Bhagat, Pooja; Malhotra, Rajesh

doi:10.1016/j.saa.2021.120279

Cited by 19 publications

(11 citation statements)

References 44 publications

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“…Most commonly used molecule designing strategies involve the metal host interactions such as electrostatic force, hydrogen bonding, Van der Waals forces, metal-receptor coordination, and hydrophobic interaction for analytes detection but still the effective chemosensors in terms of stable outcomes, high specificity, selectivity, and very low detection limits are insufficient. Some of the recently reported organic sensors for Cu 2 + ion detection include those based on chromone and pyridine derivatives, [13] chromone Schiff base, [14] diamino pyridine derivative (DAPCS), [15] all of these have higher detection limit values (micro molar range) than the current study (nano molar range). Other Pyrazolidine-3,5-dione, [16] piperazine-based Schiff base, [17] and rhodamine hydrazide linked P(VBA-co-DVB) microbead [18] sensors also possessed higher LOD than present work, along with multi-ion detection, making them less sensitive.…”

Section: Introductionmentioning

confidence: 59%

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Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

2023

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Numerous chemosensors have been reported for the detection of heavy metal ions in drinking water or in biological system pertaining to health concerns. Here, in the present study we have focused on synthesis of simple, efficient chemosensors for one of such ion i. e. Cu2+ due to its prevalent importance. Chemosensor (3) has been synthesized from sulfanilamide and nitro‐benzaldehyde which was further characterized with various analyses such as 1H NMR, 13C NMR, FT‐IR and mass spectrometry. The absorbance and emission studies results showed that sensor (3) has profound sensitivity and selectivity for Cu2+ ions in aqueous medium by quenching the emission intensity of the same at 335 nm. Whereas the complexation of sensor (3) with Cu2+ ion produced the change in color from pale yellow to green, in semi aqueous medium with gradual addition of Cu2+. The sensor was also tested against various water samples and found to generate 100.4 % recovery from irrigation water sample. Further computational analyses were performed to verify the sensing mechanism and also different global quantities such as electron affinity (A), ionisation potential (I), electronegativity (χ), global softness (S), hardness (η), and electrophilicity (ψ) were calculated.

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Section: Introductionmentioning

confidence: 59%

“…Supporting information contains description about material and methods, 1 H NMR, 13 C NMR, D 2 O exchange of the probe (3). Also contain figures of Frontier molecular orbital of the probe (3) and complex[(3) + Cu 2 + ].…”

Section: Methodsmentioning

confidence: 99%

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

2023

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“…Therefore, the mixture of the two species might cause several bands in UV-Vis spectrum. The bathochromic shift might be due to ligand-tometal charge transfer (LMCT) through coordination between CMF and Cu 2+ [38,39]. Job plot study showed a 2:1 ratio to the binding of CMF and Cu 2+ (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

“…Recently, various chromophore groups have been used to develop colorimetric chemosensors [32][33][34]. Among them, chromone moiety has been used in the design of various colorimetric chemosensors for detecting copper ion [35][36][37][38][39]. The chromone moiety has unique spectral properties and great photostability because of the chromophoric units of chromone having C═C and C═O [40,41].…”

Section: Introductionmentioning

confidence: 99%

A selective chromone‐based colorimetric chemosensor for detecting Cu²⁺ in near‐perfect aqueous solution and test kit

Gil

kim

2022

Journal of Heterocyclic Chem

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A colorimetric chemosensor CMF (N′‐[(E)‐(4‐oxo‐4H‐chromen‐3‐yl)methylidene]furan‐2‐carbohydrazide) was applied for detecting Cu2+. CMF showed colorimetric selectivity to Cu2+ through a color variation from colorless to yellow. Binding ratio between CMF and Cu2+ was analyzed by Job plot to be a 2:1. Limit of detection was found to be 0.38 μM. The practicality of CMF was illustrated by the quantification of Cu2+ in real samples. In particular, the CMF‐coated test kit was able to detect the copper ions at a concentration lower than the recommended concentration (31.5 μM) of the World Health Organization (WHO) for copper ion. The binding mode of CMF and copper ions was studied through UV–visible spectroscopy, 1H NMR titration, ESI‐mass analysis, and DFT calculations. Sensing mechanism of CMF to Cu2+ was proposed to be the ligand‐to‐metal charge transfer (LMCT) through DFT calculations.

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“…Chromone derivatives, heterocyclic bioactive compounds, have distinct spectral properties and outstanding photostability [49–52] . Thiosemicarbazide derivatives prefer to form a complex with metal cations like copper and zinc because they contain nitrogen and sulfur donor atoms [53] .…”

Section: Introductionmentioning

confidence: 99%

A New Chromone‐based Sequential Functioning Colorimetric Chemosensor for Cu²⁺ and Cysteine in Near‐perfect Aqueous Media

2023

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A selective chromone‐containing colorimetric chemosensor DOCC ((E)‐N,N‐dimethyl‐2‐((4‐oxo‐4H‐chromen‐3‐yl)methylene)hydr azine‐1‐carbothioamide) was designed for the sequential probing of Cu2+ and cysteine. DOCC exhibited a marked color variation from colorless to pale yellow and had the lowest limit of detection (0.30 μM) among the chromone‐based colorimetric sensors for Cu2+ in near‐perfect aqueous media. DOCC could work to probe and quantify Cu2+ in real water samples with great recovery (98‐102%). DOCC could discriminate Cu2+ using the test kit down to 10 μM. On the other hand, Cu2+‐2⋅DOCC could selectively detect cysteine (Cys) in a sequential step through the demetallation reaction. Cu2+‐2⋅DOCC showed that its color returned from pale yellow to colorless only in the presence of Cys and its limit of detection was calculated to be 6.62 μM. The practical applications for Cys were successfully achieved in water samples with perfect recovery (99–100%) and pH tests at 7–9. FT‐IR, Job plot, ESI‐MS, and DFT calculations were applied to explain the sensing mechanisms of Cu2+ by DOCC and Cys by Cu2+‐2⋅DOCC.

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Chromone functionalized pyridine chemosensor for cupric ions detection

Cited by 19 publications

References 44 publications

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

A selective chromone‐based colorimetric chemosensor for detecting Cu²⁺ in near‐perfect aqueous solution and test kit

A New Chromone‐based Sequential Functioning Colorimetric Chemosensor for Cu²⁺ and Cysteine in Near‐perfect Aqueous Media

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Chromone functionalized pyridine chemosensor for cupric ions detection

Cited by 19 publications

References 44 publications

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu2+ Ion in Irrigation Water by Schiff Base

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu2+ Ion in Irrigation Water by Schiff Base

A selective chromone‐based colorimetric chemosensor for detecting Cu2+ in near‐perfect aqueous solution and test kit

A New Chromone‐based Sequential Functioning Colorimetric Chemosensor for Cu2+ and Cysteine in Near‐perfect Aqueous Media

Contact Info

Product

Resources

About

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu²⁺ Ion in Irrigation Water by Schiff Base

A selective chromone‐based colorimetric chemosensor for detecting Cu²⁺ in near‐perfect aqueous solution and test kit

A New Chromone‐based Sequential Functioning Colorimetric Chemosensor for Cu²⁺ and Cysteine in Near‐perfect Aqueous Media