Articles with "calix arene" as a keyword



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Methane Detection with a Tungsten‐Calix[4]arene‐Based Conducting Polymer Embedded Sensor Array

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Published in 2020 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202007281

Abstract: The detection of methane is important for industry, environment, and our daily life, but is made challenging by its small size, high volatility, and nonpolar nature. Herein, a tungsten‐capped calix[4]arene‐based p‐doped conducting polymer with hexafluorophosphate… read more here.

Keywords: conducting polymer; polymer; detection; calix arene ... See more keywords
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Synthesis and separation of diastereomeric N-(1-phenylethyl)amides of inherently chiral hydroxydibenzoyloxy-calix[4]arene acetic acids.

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Published in 2022 at "Chirality"

DOI: 10.1002/chir.23503

Abstract: A preparative method for the synthesis of optically pure N-(1-phenylethyl)amides of inherently chiral (cR)- and (cS)-dibenzoyloxy-calix[4]arene acetic acids has been developed. Their absolute stereochemical configuration was determined by X-ray diffraction analysis. read more here.

Keywords: arene acetic; phenylethyl amides; calix arene; amides inherently ... See more keywords
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New fluorescent sensor based on a calix[4]arene bearing two triazole–coumarin units for copper ions: application for Cu2+ detection in human blood serum

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Published in 2018 at "Journal of Inclusion Phenomena and Macrocyclic Chemistry"

DOI: 10.1007/s10847-018-0872-3

Abstract: A novel fluorescent chemosensor calix[4]arene L, containing two fluorogenic coumarin units at the lower rim has been synthesized via click reaction. The structure of this chemosensor, was characterized by IR, NMR spectra and elemental analysis.… read more here.

Keywords: detection; calix arene; cu2; coumarin units ... See more keywords
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Novel chiral Oxa-bridged Calix[2]arene[2]triazine derivatives as NMR chiral reagents for enantioselective recognition of α-racemic carboxylic acids

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Published in 2019 at "Journal of Inclusion Phenomena and Macrocyclic Chemistry"

DOI: 10.1007/s10847-019-00912-y

Abstract: A new family of chiral tetraoxacalix[2]arene[2]triazine receptors (2a–2c) have been synthesized efficiently in 69–73% yields. By 1H NMR spectroscopy, the chiral enantiodiscrimination ability of novel hosts against a series racemic carboxylic acids were examined. The… read more here.

Keywords: calix arene; triazine; carboxylic acids; recognition ... See more keywords
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Very Selective Synergistic Extraction of Univalent Cations into Nitrobenzene and Phenyltrifluoromethyl Sulfone Solutions of Dicarbollylcobaltate in the Presence of Some Calix[4]arene-crowns-6

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Published in 2020 at "Journal of Solution Chemistry"

DOI: 10.1007/s10953-020-01033-8

Abstract: The exchange extraction constants corresponding to the general equilibria M+(aq) + NaL+(org) ⇌ ML+(org) + Na+(aq) and the respective M+(aq) + CsL+(org) ⇌ ML+(org) + Cs+(aq), taking place in the two-phase water–nitrobenzene and water–phenyltrifluoromethyl sulfone (abbrev. FS 13) systems (M+ = Li+, H3O+, Ag+, K+,… read more here.

Keywords: extraction; calix arene; calix; phenyltrifluoromethyl sulfone ... See more keywords
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Calix[4]arene-triazine conjugate intermediate: optical properties and gas sensing responses against aromatic hydrocarbons in Langmuir–Blodgett films

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Published in 2020 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-020-04213-9

Abstract: The detection of organic vapors by chemically based sensors was achieved with macromolecules having convenient molecular cavities. Addressed herein, a calix[4]arene derivative 25,27-(4-chloro-2-phenylamino-1,3,5-triazine)-26,28-dihydroxycalix[4]arene (C4AsTr) was synthesized and Langmuir–Blodgett (LB) thin films of this compound modified… read more here.

Keywords: calix arene; langmuir blodgett; triazine; optical properties ... See more keywords
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Calix[6]arene diminishes receptor tyrosine kinase lifespan in pancreatic cancer cells and inhibits their migration and invasion efficiency.

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Published in 2020 at "Bioorganic chemistry"

DOI: 10.1016/j.bioorg.2020.103881

Abstract: Pancreatic cancer is a challenging malignancy, mainly due to aggressive regional involvement, early systemic dissemination, high recurrence rate, and subsequent low patient survival. Scientific advances have contributed in particular by identification of molecular targets as… read more here.

Keywords: receptor tyrosine; calix arene; tyrosine kinase; pancreatic cancer ... See more keywords
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Materials design and sensing mechanism of novel calix[6]arene composite for sensitively detecting amine drugs

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Published in 2020 at "Chinese Chemical Letters"

DOI: 10.1016/j.cclet.2020.01.034

Abstract: Abstract In order to improve the convenience and sensitivity of amphetamines drug testing and reduce the threat of drugs to humans, we have designed a QCM gas sensor to detect amine-containing drugs. The sensing material… read more here.

Keywords: calix arene; novel calix; sensing mechanism; amine drugs ... See more keywords
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Effect of additives on nickel-phosphorus deposition obtained by electroless plating: Characterization and corrosion resistance in 3%(mass) sodium chloride medium

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Published in 2021 at "Chinese Journal of Chemical Engineering"

DOI: 10.1016/j.cjche.2021.01.015

Abstract: Abstract Nichel-Phosphorus (Ni-P) coatings are deposited on mild steel by using an electroless plating process. The effect of three calix[4]arene derivatives, namely tetra methyl ester-P-tertbutyl calix[4]arene (Calix1), tetra acid-P-tertbutyl calix[4]arene (Calix2) and tetra methyl P-tert-butyl-thicalix[4]arene… read more here.

Keywords: calix arene; electroless plating; deposition; effect ... See more keywords
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A calix[4]arene derivative and its selective interaction with drugs (clofibric acid, diclofenac and aspirin)

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Published in 2017 at "European Journal of Pharmaceutical Sciences"

DOI: 10.1016/j.ejps.2016.12.027

Abstract: &NA; The synthesis and characterisation of a partially substituted calix[4]arene, namely, 5,11,17,23‐tetra‐tert‐butyl,25,27‐bis[aminoethoxy] 26,28‐dihydroxycalix[4]arene are reported. Its interaction with commonly used pharmaceuticals (clofibric acid, diclofenac and aspirin) was investigated by spectroscopic (1H NMR and UV), electrochemical… read more here.

Keywords: calix arene; acid diclofenac; clofibric acid; interaction ... See more keywords
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Upper rim modified calix[4]arene towards selective turn-on fluorescence sensor for spectroscopically silent metal ions

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Published in 2020 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2020.120133

Abstract: Abstract This work describes the synthesis of a novel sensor calix[4]arene thiosemicarbazone (Lig), consisting of a calix[4]arene thiosemicarbazone moiety capable of detecting Cu2+, Hg2+, Zn2+ colorimetrically and for the selective detection of Zn2+ by “Turn… read more here.

Keywords: calix arene; fluorescence; metal ions; turn fluorescence ... See more keywords