Design of a novel optical sensor for determination of trace amounts of copper by UV/vis spectrophotometry in the real samples

Pourbasheer, Eslam; Morsali, Somayeh; Banaei, Alireza; Aghabalazadeh, Sajjad; Ganjali, Mohammad Reza; Norouzi, Parviz

doi:10.1016/j.jiec.2014.12.011

Cited by 47 publications

(35 citation statements)

References 40 publications

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“…The development and applications of optical sensors or optodes have grown rapidly and they are applied for determination of various analytes, including cationic, anionic, neutral and gaseous species, because of advantages of easy fabrication, good sensitivity and selectivity, well‐controlled experimental conditions and simple sample preparation . Optodes are used in combination with inexpensive spectrophotometric or spectrofluorometric techniques to provide simple and fast determination methods with low detection limits and good selectivity …”

Section: Introductionmentioning

confidence: 99%

Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples

Pourbasheer

Morsali

Azari

et al. 2017

Applied Organom Chemis

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A new optical chemical sensor is established for sensitive and selective spectrophotometric detection of copper based on the immobilization of 3‐(2‐methyl‐2,3‐dihydro‐1,3‐benzothiezol‐2‐yl)‐2H‐chromen‐2‐one on a triacetylcellulose membrane. Copper ions react with the immobilized ligand and cause an increase in the absorption of the membrane at 550 nm in universal buffer solution at pH = 6. The effects of pH, indicator concentration and reaction time on the immobilization of the ligand were studied. This optode exhibits a linear range of 7.0 × 10−7 to 1 × 10−4 mol l−1 of copper ion concentration with a limit of detection of 3.0 × 10−7 mol l−1. The response time of the newly designed optode is within 3 min. The effect of different possible interfering species was investigated and it was found that the sensor has very good selectivity. The proposed sensor benefits from advantages such as low cost, high stability, low detection limit, fast response time, reproducibility, relatively long lifetime, and good selectivity for Cu2+ ion determination among a large number of alkali, alkaline earth, transition and heavy metal ions. The sensor can readily be regenerated with thiourea solution and its response is reversible and reproducible (relative standard deviation < 1.4%). The proposed optode was applied successfully for the determination of Cu(II) in various samples.

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Section: Introductionmentioning

confidence: 99%

Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples

Pourbasheer

Morsali

Azari

et al. 2017

Applied Organom Chemis

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“…Pourbasheer et al. also reported the detection of Cu 2+ ion with 250.0 nM LOD among series of metal ions by synthesizing thiazole derivative but had not shown the particular reason of detection of only Cu 2+ ion . Herein we tabulated some published articles on Cu 2+ ion sensing, where none described the reason of detection of only Cu 2+ ions among others metal ions (Table S1).…”

Section: Resultsmentioning

confidence: 99%

“…Recognition of transition metal ions has evolved as an important area of interdisciplinary research topic in biological, industrial and environmental fields because of fast and highly sensitive detection ability of synthesized ligand over other conventional techniques . A wide range of articles on Cu 2+ or any other metal ion sensing field was benchmarked against lower limit of detection values but there is no report on the reason for selecting a particular metal ion sensing among a series of metal ions . Here we have drawn attention to the reason of selecting a particular metal ion among a series of metal ions.…”

Section: Introductionmentioning

confidence: 99%

“…In this perspective, fluorescence technique is one of the most promising among various analytical tools. Because of its ease and high sensitivity, fluorescence is also essential to trace the recognition of different analytes ,. In recent times, research work is being carried out on synthesizing fluorescent probes for Cu 2+ detection .…”

Section: Introductionmentioning

confidence: 99%

“…Because of its ease and high sensitivity, fluorescence is also essential to trace the recognition of different analytes ,. In recent times, research work is being carried out on synthesizing fluorescent probes for Cu 2+ detection . There are many significant works, and some of the probes are appropriate for biological applications in living cell systems but the reason for selectivity of particular metal ion has not been mentioned.…”

Section: Introductionmentioning

confidence: 99%

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Deciphering of Ligand‐to‐Metal Charge‐Transfer Process: Synthesis, Spectroscopic and Theoretical Study

et al. 2019

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Many reports on metal ion sensing applications are available in literature but the mechanism of selectivity is not clear. Here the synthesis and characterization of a Schiff base Furan‐2‐carboxylic acid pyren‐1‐ylmethylene‐hydrazide (PYFH) has been described with selective detection of copper(II) metal ion among different metal ions by UV–vis, fluorescence and HRMS spectroscopic methods. The S2− ion (Na2S) was added to the PYFH:Cu2+ complex for checking reversibility of PYFH by fluorescence, fluorescence microscopic imaging and molecular logic gate construction (combination of NOT and OR gate). From the experimental findings the reason for selectivity of Cu2+ metal ion among a series of metal ions is not clear. So, to explore the causes of selectivity of Cu2+ metal ion by PYFH, Density Functional Theory (DFT) calculation was conducted for free PYFH and various sets of metal ions individually with PYFH. From DFT calculation it was understandable that selectivity of PYFH towards Cu2+ ions occurred due to lowering of HOMO‐LUMO energy of PYFH:Cu2+ composites (‐8.46 & −5.80 eV) compared to free PYFH (‐5.56 & −2.15 eV). Whereas energy of HOMO and LUMO with other metals ions (PYFH:Mn+) are ∼‐5.50 and ∼‐2.24 eV respectively, as a result PYFH does not get any extra stability.

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Cu‐Catalyzed Chan–Evans–Lam Coupling Reactions of 2‐Nitroimidazole with Aryl Boronic Acids: An Effort toward New Bioactive Agents against S. pneumoniae

Raju

Sheridan

Hauer

et al. 2022

Chemistry & Biodiversity

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The coupling of phenylboronic acids with poorly-activated imidazoles is studied as a model system to explore the use of copper-catalyzed Chan -Evans-Lam (CEL) coupling for targeted CÀ N bond forming reactions. Optimized CEL reaction conditions are reported for four phenanthroline-based ligand systems, where the ligand 4,5-diazafluoren-9-one (dafo, L2) with 1 molar equivalent of potassium carbonate yielded the highest reactivity. The substrate 2-nitroimidazole (also known as azomycin) has documented antimicrobial activity against a range of microbes. Here N-arylation of 2-nitroimidazole with a range of aryl boronic acids has been successfully developed by copper(II)-catalyzed CEL reactions. Azomycin and a range of newly arylated azomycin derivatives were screened against S. pneumoniae, where 1-(4-(benzyloxy)phenyl)-2-nitro-1H-imidazole (3d) was demonstrated to have a minimal inhibition concentration value of 3.3 μg/mL.

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Design of a novel optical sensor for determination of trace amounts of copper by UV/vis spectrophotometry in the real samples

Cited by 47 publications

References 40 publications

Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples

Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples

Deciphering of Ligand‐to‐Metal Charge‐Transfer Process: Synthesis, Spectroscopic and Theoretical Study

Cu‐Catalyzed Chan–Evans–Lam Coupling Reactions of 2‐Nitroimidazole with Aryl Boronic Acids: An Effort toward New Bioactive Agents against S. pneumoniae

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