Articles with "ion pair" as a keyword



Highly Efficient Upconverted Fluorescence from Coulombically Assembled Ion Pair

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Published in 2025 at "Advanced Optical Materials"

DOI: 10.1002/adom.202500876

Abstract: An ion pair consisting of a dicationic Os(II) complex and two monoanionic fluorophores is designed and prepared. The ion pair exhibited strong upconverted (UC) greenish blue fluorescence emission upon photoexcitation of the Os(II) entity at… read more here.

Keywords: ion pair; fluorescence; triplet triplet; ion ... See more keywords
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Enhancement of Ion Pairing of Sr(II) and Ba(II) Salts by a Tritopic Ion‐Pair Receptor in Solution

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Published in 2020 at "Chemphyschem"

DOI: 10.1002/cphc.202000507

Abstract: Abstract Tritopic ion‐pair receptors can bind bivalent salts in solution; yet, these salts have a tendency to form ion‐pairs even in the absence of receptors. The extent to which such receptors can enhance ion pairing… read more here.

Keywords: tritopic ion; ion; ion pairing; receptor ... See more keywords

Investigating Anion-π Interactions In Ion-Pair Receptors Based On 3,5-Dinitrobenzoic Acid.

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Published in 2025 at "ChemPlusChem"

DOI: 10.1002/cplu.202500363

Abstract: The design, synthesis, and characterization of a series of supramolecular receptors based on electron-deficient aromatic systems capable of engaging in anion-π interactions are reported. Receptors 1 and 3 combine an electron-poor aromatic scaffold with a… read more here.

Keywords: anion interactions; receptors based; anion; ion pair ... See more keywords

Characterization, Antibacterial Evaluation and Computational Study of Synthesized 4,5‐bis(Hydroxymethyl)‐2‐Methylpyridin‐3‐ol Tetraphenylborate Ion‐Pair Complex

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Published in 2025 at "ChemistryOpen"

DOI: 10.1002/open.202400422

Abstract: Abstract The synthesis of 4,5‐bis(hydroxymethyl)‐2‐methylpyridin‐3‐ol tetraphenylborate complex in water using an anion exchange process yielded more than 76 %. The resulting white complex was obtained and characterized using various spectroscopic and analytical techniques, including ultraviolet, infrared… read more here.

Keywords: tetraphenylborate; tetraphenylborate ion; ion; ion pair ... See more keywords

Rapid and simultaneous determination of piperidinium and pyrrolidinium ionic liquid cations by ion pair chromatography coupled with direct conductivity detection

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Published in 2017 at "Chinese Chemical Letters"

DOI: 10.1016/j.cclet.2016.05.034

Abstract: Abstract A method of ion-pair chromatography with direct conductivity detection was developed on a silica-based monolithic column for the fast and simultaneous determination of piperidinium and pyrrolidinium ionic liquid cations. The effects of the mobile… read more here.

Keywords: piperidinium; ionic liquid; piperidinium pyrrolidinium; determination piperidinium ... See more keywords

Self-assembly prepared using an ion pair of poly(ethylene imine) and (phenylthio) acetic acid as a drug carrier for oxidation, temperature, and NIR-responsive release

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Published in 2021 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2021.128954

Abstract: Abstract Poly(ethylene imine)/(phenylthio) acetic acid (PEI/PTA) ion pair whose the molar ratio of amino to carboxyl group ratio was 3/7 exhibited its upper critical solution temperature (UCST) around body temperature (37 ℃) at pH 7.0.… read more here.

Keywords: oxidation; ion; temperature; release ... See more keywords
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Antagonistic interaction of Pb2+- Al3+ ion pair with Sugar derived Carbon dots: Visual monitoring of Al 3+ ions

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Published in 2020 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2020.124632

Abstract: Abstract In the present study, Maillard reaction assisted route is followed to yield carbon dots from commercialy available table sugar.The system is characterized using High-resolution transmission electron microscopy (HR-TEM), X-ray Photo electron spectroscopy (XPS), X-ray… read more here.

Keywords: carbon; carbon dots; spectroscopy; sugar ... See more keywords

Ion pairing and preferential solvation of butylmethylimidazolium chloride ion pair in water-ethanol mixtures by using molecular dynamics simulations

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Published in 2019 at "Chemical Physics Letters"

DOI: 10.1016/j.cplett.2019.02.010

Abstract: Abstract Constrained molecular dynamics simulations are used to compute the potentials of mean force (PMFs) of 1-butyl-3-methylimidazolium chloride (BMIM+−Cl−) ion pair in water-ethanol mixtures. From the PMFs of BMIM+−Cl− ion pair, we notice that, as… read more here.

Keywords: ethanol; water; ion; molecular dynamics ... See more keywords

Insight into the origin of catechol oxidase activity in a rare MnII/MnIII mixed valence ion pair complex: An account of comparative biomimetic catalytic study

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Published in 2017 at "Inorganica Chimica Acta"

DOI: 10.1016/j.ica.2017.01.024

Abstract: Abstract A mixed valence ion pair complex, [MnII(ntb)Cl][MnIII(Br4Cat)2(H2O)2]·4H2O (2) and a manganese(III) compound, (Et3NH)2[Mn(Br4Cat)2(H2O)2][Mn(Br4Cat)2(H2O)(pm)]·H2O (3), where ntb is tris(2-benzimidazolylmethyl)amine, Br4CatH2 is tetrabromocatechol and pm is pyrimidine, have been synthesized and the solid state structures were… read more here.

Keywords: ion pair; valence; catechol oxidase; mixed valence ... See more keywords

Reversed-phase ion-pair chromatography of hydroxyl functionalized imidazolium ionic liquid cations and its application in analysis of environmental water and measurement of hydrophobicity constants

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Published in 2019 at "Microchemical Journal"

DOI: 10.1016/j.microc.2018.11.058

Abstract: Abstract A reversed-phase ion-pair chromatography with ultraviolet detection method for the determination of 1‑hydroxyethyl‑3‑methyl imidazolium cation ([HOEtMIm]+) and 1‑hydroxypropyl‑3‑methyl imidazolium cation ([HOPrMIm]+) was developed. The method has been applied to the analysis of hydroxyl functionalized… read more here.

Keywords: ion pair; imidazolium ionic; imidazolium; reversed phase ... See more keywords

Oppositely charged dye surfactant interactions: Extent and selectivity of ion pair formation

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Published in 2018 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.06.108

Abstract: Abstract Interactions of oppositely charged dye (eosin yellow) and surfactant (Cetyltrimethylammonium bromide) were investigated using conductometric and spectrophotometric studies. The conductometric investigations showed a negligible change in critical micellar concentration of Cetyltrimethylammonium bromide at the… read more here.

Keywords: ion pair; ion; dye surfactant; formation ... See more keywords