A novel highly selective colorimetric sensor for Ni(II) ion using coumarin derivatives

Jiang, Jinqiang; Gou, Chao; Luo, Jing; Yi, Chenglin; Liu, Xiaoya

doi:10.1016/j.inoche.2011.09.027

Cited by 78 publications

(18 citation statements)

References 19 publications

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“…The binding interaction of L1-L4 with different metal ions was further monitored by investigating UVvisible absorption spectral changes and shown in Table 1. The UV-visible spectra of model receptor L4 showed a remarkable bathochromic shift in absorption spectrum at 537 nm which is in good agreement with color change, may possibly be ascribed to fast metal-ligand binding kinetics and high thermodynamic a nity of Ni 2+ for N-donor ligands 32 . The other examined metal ions did not exhibit any distinct spectral changes in UV-visible spectrum at 537 nm under identical conditions.…”

Section: Resultssupporting

confidence: 68%

“…The possible binding mode of receptor L4 and Ni 2+ in the complex showed that the nitrogen atoms of naphthyridines coordinates Ni 2+ in 2:1 ratio and showed bathochromic shift in absorption spectra that can be rationalized by ICT 32 . The coordination of Ni 2+ to the nitrogen of naphthyridine moiety increases its electron withdrawing character which showed stronger ICT from electron donating methyl group to metal complex moiety.…”

Section: Resultsmentioning

confidence: 93%

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2,7-Naphthyridine based colorimetric and fluorescent “Turn Off” chemosensors for selective detection of Ni(II) in aqueous media

Ashraf

Islam

Shafiq

et al. 2021

Preprint

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A highly selective and sensitive 2,7-naphthyridine based colorimetric, reversible, pH independent and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni2+ are being reported in aqueous media. The synthesized sensors are highly efficient in detecting Ni2+ even in the presence of other metal ions that commonly co-exist with nickel. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni2+ with spectral changes in bands at 535–550 nm. The detection limit of Ni2+ for (L1-L4) are in the range of 0.2–0.5 µM which is 2–5 times lower than the permissible value of Ni2+ (1.2 µM) in drinking water defined by EPA. The binding mode of interactions of L1-L4 for Ni2+ were found to be 2:1 through job’s plot and ESI-MS analysis. Moreover the receptors can be used to quantify Ni2+ in real water samples and formation of test strips by dip-stick method increases the practical applicability of Ni2+ test for “in-the-field” measurement of Ni2+. Importantly the sensing potential of these derivatives have been tuned by the nature of substituents i.e. electron donating (CH3) and electron attracting (F, OCF3), which showed that L4 is highly efficient in sensing of Ni2+ even at minute level.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 93%

2,7-Naphthyridine based colorimetric and fluorescent “Turn Off” chemosensors for selective detection of Ni(II) in aqueous media

Ashraf

Islam

Shafiq

et al. 2021

Preprint

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“…The free receptor HL is a weak emitter, due to ESIPT mechanism through keto-enol tautomerism involving the phenolic protons of 2-hydroxy-naphthalene moiety and sp 2 nitrogen of imine linkage. [65] The observed fluorescence enhancement for La 3+ can be explained due to the formation of a chelate complex (rigid system) between HL and the La 3+ ion, leading to the CHEF effect. [66] Fluorescent recognition studies support the high selectivity of the receptor for La 3+ over other lanthanides.…”

Section: Cation Recognition Studies Of Hlmentioning

confidence: 99%

Fluorescence modulation of naphthalene containing salicyl hydrazide‐based receptor through aggregation‐induced emission enhancement approach: Dual detection of lanthanum and cyanide ions in semi‐aqueous medium

Joshi

Ali

Rishu³

et al. 2021

Luminescence

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The sensing activity of naphthalene containing salicyl hydrazide-based fluorescence receptor has been improved through aggregation-induced enhanced emission mechanism approach in semi-aqueous medium. The receptor has been found to be selective toward La 3+ with approximately 70-fold fluorescence enhancement due to a combined effect of keto-enol tautomerism inhibition and chelation enhanced fluorescence with a detection limit of 3.91 × 10 −6 M. In addition, the receptor is also able to sense CN − with a detection limit of 3.55 × 10 −6 M via deprotonation effect, justifying its multiple analyte sensing behaviour. Hence, the current analytical methodology improves the sensing activity of the probe and also provides a greener alternative for La 3+ and CNdetection.

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“…When tested against other cations for interference, copper(II) and mercury(II) did induce red shifts of 50 nm and 84 nm, respectively. However, the red shift induced by nickel(II), as well as the enhancement in absorption, was much larger, making this molecule quite selective to nickel(II) [124].…”

Section: Analytesmentioning

confidence: 99%

Metal Cation Detection in Drinking Water

Dalmieda

Kruse

2019

Sensors

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Maintaining a clean water supply is of utmost importance for human civilization. Human activities are putting an increasing strain on Earth’s freshwater reserves and on the quality of available water on Earth. To ensure cleanliness and potability of water, sensors are required to monitor various water quality parameters in surface, ground, drinking, process, and waste water. One set of parameters with high importance is the presence of cations. Some cations can play a beneficial role in human biology, and others have detrimental effects. In this review, various lab-based and field-based methods of cation detection are discussed, and the uses of these methods for the monitoring of water are investigated for their selectivity and sensitivity. The cations chosen were barium, cadmium, chromium, copper, hardness (calcium, magnesium), lead, mercury, nickel, silver, uranium, and zinc. The methods investigated range from optical (absorbance/fluorescence) to electrical (potentiometry, voltammetry, chemiresistivity), mechanical (quartz crystal microbalance), and spectrometric (mass spectrometry). Emphasis is placed on recent developments in mobile sensing technologies, including for integration into microfluidics.

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A novel highly selective colorimetric sensor for Ni(II) ion using coumarin derivatives

Cited by 78 publications

References 19 publications

2,7-Naphthyridine based colorimetric and fluorescent “Turn Off” chemosensors for selective detection of Ni(II) in aqueous media

2,7-Naphthyridine based colorimetric and fluorescent “Turn Off” chemosensors for selective detection of Ni(II) in aqueous media

Fluorescence modulation of naphthalene containing salicyl hydrazide‐based receptor through aggregation‐induced emission enhancement approach: Dual detection of lanthanum and cyanide ions in semi‐aqueous medium

Metal Cation Detection in Drinking Water

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