A cationic AIEgen and hexametaphosphate based simple and convenient fluorometric assay for alkaline phosphatase and its inhibitor

Gosavi³

et al. 2023

ChemistrySelect

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Herein, we have reported a tetraphenylethylene (TPE) based fluorescent chemosensor 4,4′,4′′,4′′′‐(ethene‐1,1,2,2‐tetrayl)tetrakis(N,N‐dimethylaniline) (TPE‐DMA) for the selective detection of explosive nitroaromatic compounds (NACs), such as 2, 4, 6‐trinitrophenol also called as picric acid (PA), 2,4‐dinitrophenol (DNP), and p‐nitrophenol (NP) over other NACs in CHCl3. TPE‐DMA is highly selective and sensitive toward PA in presence of various metal ions and anions. The quenching efficiency can be calculated from the Stern‐Volmer equation and was found to be 4.02×104 M−1, 1.82×104 M−1and 3.12×104 M−1 respectively for PA, DNP and NP. The detection limit of TPE‐DMA towards PA, DNP and NP of about 4.088×10−6 M, 5.155×10−6 M and 3.989×10−6 M respectively. Furthermore, to study the practical applicability of TPE‐DMA, visual‐eye detection was performed not only in solid‐state on TLC plates but also in solution state in CHCl3 under visible light as well as UV light illumination.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tetraphenylethylene Based Fluorescent Chemosensor for the Selective Detection of Explosive Nitroaromatic Compounds

Gosavi³

et al. 2023

ChemistrySelect

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“…By tuning such receptor sites on phenyl rings, our group has reported an AIE-active tetrapyridyl-substituted TPE (TPy-TPE) for intracellular pH detection 21 and zinc sulfate sensing. 22 Nevertheless, our group also reported various probes for the selective detection of toxic anions, 23,24 cations, 25,26 biomolecules, 27 and explosive sensors. 28 The reported molecule, tetrakis(4-(dimethylamino)phenyl)ethylene, is already known in the literature; Qi et al reported the mechanochromic and polymorphic emission of this molecule, 29 and our group also reported this molecule for the detection of explosive nitroaromatic compounds.…”

Section: Introductionmentioning

confidence: 99%

Molecular nanoarchitectonics of proton triggered tetraphenylethylene-based detector: colorimetric, reversible, and intracellular pH

Rode

et al. 2023

Anal. Methods

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A Phenolic Schiff Based AIE‐Active Quinoxaline‐Based Receptor for Selective Sensing of Fluoride Ions

Zalmi

Jadhav²,

et al. 2023

ChemistrySelect

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Anions play very important role in various physiological, biological process and essential in various medical diagnosis. Amongst, anionic species fluoride is considered an essential component, however, the excess amount of fluoride may cause issues with various organs of the body such as kidney and nervous system. Herein we developed a new fluorescent chemosensor based on quinoxaline receptor 1 for rapid sensitive detection of fluoride ion. The receptor contains the free hydroxy proton which easily undergoes deprotonation occurs the OH− to give phenoxide ion via hydrogen bond interaction with fluoride ions. The deprotonation reaction on the aromatic system. The receptor 1 showed good selectivity towards F− ion in presence over another anion. The absorption and emission studies, naked eye detection and test strip application was performed for fluoride ion detection. The binding constant for the receptor was calculated by Benesi Hildebrand method and was found to be 8.76×104 M−1. While the limit of detection was observed to be 3.1 μM which much lower than the permissible limit of 270 μM given by United State Environmental Protection Agency (EPA). Thus, we believe this new derivative may be used in future for real world application for fluoride ion detection.