Articles with "calix arene" as a keyword



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

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

Catalytic Performance of Chiral Tetraaza-Bridged Calix[4]arene[2]triazine Derivatives for Enantioselective Michael Reactions.

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Published in 2024 at "Chirality"

DOI: 10.1002/chir.23711

Abstract: Novel chiral tetraaza-bridged calix[4]arene[2]triazine-based organocatalysts were synthesized and used for catalytic asymmetric Michael reaction of acetylacetone to various aromatic nitrostyrenes. Chiral subunits (R)- and (S)-1,2,3,4-tetrahydro-1-naphthylamine were attached to the tetraaza-bridged calix[4]arene[2]triazine platform in both enantiomeric… read more here.

Keywords: calix arene; arene triazine; tetraaza bridged; bridged calix ... See more keywords

Synthesis of β-Cyclodextrin-Calix[4]arene Polymer-Based Chiral Stationary Phase for Chromatographic Separation of Enantiomers.

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Published in 2025 at "Chirality"

DOI: 10.1002/chir.70060

Abstract: In this work, a new strategy was proposed for the preparation of a chiral stationary phase based on β-cyclodextrin and calix[4]arene polymer. The chiral stationary phase was characterized by scanning electron microscopy, energy dispersive x-ray… read more here.

Keywords: chiral stationary; based chiral; calix arene; arene polymer ... See more keywords

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

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

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

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

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