A colorimetric and fluorescent sensor for Cu 2+ and F − based on a diarylethene with a 1,8-naphthalimide Schiff base unit

Fu, Yinglong; Fan, Congbin; Pu, Shouzhi

doi:10.1016/j.snb.2016.08.020

Cited by 161 publications

(47 citation statements)

References 46 publications

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“…[21][22][23][24] In recent times, scientists from all over the world have designed different types of colorimetric and fluorescent chemosensors of fluoride ion. [25][26][27][28][29][30][44][45][46][47][52][53][54][55][56][57][58][59][60][61][62][63][64][65]69] But gel-based detection is very less. [31][32][33][34] In general, using fluorescence-based sensors, we can easily detect very less quantity of fluoride in the range of 1-100 ppb [25][26]30,[44][45] as well as in the higher range 100-1000 ppb.…”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27][28][29][30][44][45][46][47][52][53][54][55][56][57][58][59][60][61][62][63][64][65]69] But gel-based detection is very less. [31][32][33][34] In general, using fluorescence-based sensors, we can easily detect very less quantity of fluoride in the range of 1-100 ppb [25][26]30,[44][45] as well as in the higher range 100-1000 ppb. [27][28][53][54][55] But in case of gel-based sensors, a large amount of fluoride ion is required as we need to convert the whole gel into sol in the presence of fluoride ion.…”

Section: Introductionmentioning

confidence: 99%

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A Metallogel Based on a Zwitterionic Spirocyclic Meisenheimer Complex: Sensing of Fluoride Ions in Water and Moisture Content in Organic Solvents

Mohar

2019

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Design and synthesis of stimuli‐responsive materials are highly desired for various practical applications. For this purpose, a picric acid and N,N′‐dicyclohexylcarbodiimide based highly rigid zwitterionic spirocyclic Meisenheimer complex has been applied to produce a metallogel. The Meisenheimer complex does not undergo self‐gelation under any condition. But it forms a stable gel only with Fe3+ ion in a 2:1 ratio in chloroform. Interestingly, the Meisenheimer complex shows bright yellow emission under 366 nm UV light. But the Fe3+ based metallogel does not show any emission under UV irradiation. However, in the presence of fluoride contaminated water, the metallogel surface shows bright yellow emission while checking inside a UV chamber. Thus the non‐fluorescent metallogel was utilized as a sensor of aqueous fluoride ion. The sensor is able to detect aqueous fluoride down to 156 ppb concentration. Like the gel, the dried metallogel solution is also non‐fluorescent in different polar as well as nonpolar organic solvent. But the same solution shows bright yellow emission in the presence of water. The fluorescence intensity was found to increase with an increase in the percentage of water. In this way, the xerogel was utilized as a sensor of undesired water content present in different organic solvents which can detect moisture content with a minimum detection limit of 0.04% for dichloromethane.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Metallogel Based on a Zwitterionic Spirocyclic Meisenheimer Complex: Sensing of Fluoride Ions in Water and Moisture Content in Organic Solvents

Mohar

2019

ChemistrySelect

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“…To overcome these limitations, optical and electrochemical techniques such as UV-Vis, uorescence, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) can be used for the detection of Cu 2+ ions cost effectively. 20,21 However, chemical compounds that exhibit both optical and electrochemical properties which are selective and sensitive only towards Cu 2+ ions have not been explored well enough. So, there is a need to synthesize novel materials that possess both optical and electrochemical properties towards only Cu 2+ ions, over other heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Synthesis of a novel hexaazatriphenylene derivative for the selective detection of copper ions in aqueous solution

et al. 2019

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A hexaazatriphenylene (HAT) derivative, naphtho [2,3-h]naphtho[2 0 ,3':7,8]quinoxalino[2,3-a]naphtho [2 0 ,3 0 :7,8]quinoxalino [2,3-c] 10,15,20,25, was synthesized, characterized, and found to have novel properties in being selective toward the detection of copper (Cu 2+ ) ions. The capability of NQH to be employed as a colorimetric, chemo-fluorescence and electrochemical sensor for the detection of Cu 2+ was demonstrated by performing UV-Vis absorbance, fluorescence intensity, and cyclic voltammetry (CV) measurements. The interaction between NQH and Cu 2+ was initially observed with an obvious color change from yellow to brown upon the addition of Cu 2+ ions to NQH.The interaction was also confirmed by UV-Vis absorbance, fluorescence intensity, and mass spectroscopy (MS/MS) measurements. UV absorbance, fluorescence and CV of NQH toward Cu 2+ showed good linearity with a detection limit of 3.32 mM, 2.20 mM and 0.78 mM, respectively, which are lower than the toxicity levels of copper in drinking water (20-30 mM) set by the U.S. Environmental Protection Agency (EPA) and World Health Organization (WHO). A 1 : 2 stoichiometry complexation between NQH and Cu 2+ was confirmed by Job's plot and MS/MS. In addition, the selectivity and sensitivity of the NQH compound towards Cu 2+ ions were further confirmed by performing CV on a screen printed flexible and planar electrochemical sensor. Monitoring changes in optical properties of NQH upon exposure to Cu 2+The selectivity and the sensitivity of the NQH compound towards different heavy metals was investigated by using UV-Vis absorbance spectroscopy. Initially, UV-Vis absorption spectra of NQH was recorded in the presence of 100 mM concentration of metal ions including Cu 2+ , Co 2+ , Ni 2+ , Fe 2+ , Fe 3+ , Li 1+ , Pb 2+ , and Hg 2+ in aqueous media (Fig. 4(a)). An absorbance peak at $435 nm was observed for the NQH compound. No color change as well as no shi in peak was observed in the presence Fig. 2 (a) 1 H-NMR and (b) 13 C-NMR spectra of NQH.This journal is

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“…So designing a fluoride responsive material is very much desired. In recent times, several groups have designed and synthesized various kinds of colorimetric, fluorescent, phosphorescent, chemiluminescent, gel‐based sensors for the quantitative detection of fluoride ion . In this present work, a new colorimetric fluoride sensor has been developed based on a fluorenone derivative.…”

Section: Introductionmentioning

confidence: 99%

2,4,7‐Triaminofluorenone as a Multi‐Analyte Colorimetric Sensor of Fluoride, Acetone Vapor, and Other Harmful Compounds

Mohar

2019

ChemistrySelect

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2,4,7‐Triaminofluorenone, a fluorenone derived multi‐analyte colorimetric chemosensor, has been synthesized via an extremely cost‐effective synthetic pathway. The sensor molecule can detect various analytes such as fluoride ion, acetone vapor, and picric acid. The violet solution of the sensor molecule becomes deep blue in the presence of fluoride ion. It can detect fluoride down to 120 ppb level. The compound in the solid state shows vapochromism only in the presence of acetone. The grey colored solid coating of the sensor molecule becomes blue in the presence of acetone vapor. This property was utilized to sense acetone vapor. Color Grab, an android based app, was utilized to detect acetone in real time down to 10 ppm level. Apart from that, the same sensor molecule was also tested for sensing different electron deficient nitro aromatic compounds due to its electron rich framework. The sensor was found to detect picric acid selectively. The sensor compound also shows acid‐base induced color change. The violet solution of the sensor molecule becomes brown in the presence of carboxylic as well as mineral acid. This reaction is reversible. Hence, the brown solution becomes violet again in the presence of aliphatic amines as well as ammonia. Utilizing this property, a method has been described to detect two widely used highly volatile chemicals HCl and NH3 in different industries.

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A colorimetric and fluorescent sensor for Cu 2+ and F − based on a diarylethene with a 1,8-naphthalimide Schiff base unit

Cited by 161 publications

References 46 publications

A Metallogel Based on a Zwitterionic Spirocyclic Meisenheimer Complex: Sensing of Fluoride Ions in Water and Moisture Content in Organic Solvents

A Metallogel Based on a Zwitterionic Spirocyclic Meisenheimer Complex: Sensing of Fluoride Ions in Water and Moisture Content in Organic Solvents

Synthesis of a novel hexaazatriphenylene derivative for the selective detection of copper ions in aqueous solution

2,4,7‐Triaminofluorenone as a Multi‐Analyte Colorimetric Sensor of Fluoride, Acetone Vapor, and Other Harmful Compounds

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