A Fluorescent Ditopic Rotaxane Ion-Pair Host
نویسندگان
چکیده
منابع مشابه
Ion-pair Recognition by Ditopic Macrocyclic Receptors
Over the past thirty years, a large number of macrocyclic receptors have been synthesized and evaluated for their abilities to bind cations. More recently, increased attention has been directed towards receptors for anions. Many of these synthetic receptors are uncharged molecules and operate in organic solvents. Under these conditions the target salts exist as associated ion-pairs which can hi...
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A neutral heteroditopic pyridine N-oxide axle containing [2]rotaxane, synthesised via sodium cation templation, displays cooperative recognition of alkali metal cation-halide anion ion-pairs in an unprecedented axle component separated ion-pair binding fashion.
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In this work, we report our investigations on the synthesis of a [2]rotaxane based on a bis(calix[4]pyrrole) cyclic component and a 3,5-bis-amidepyridyl-N-oxide derivative axle. We isolated the [2]rotaxane in a significant 50% yield through an optimized "in situ" capping strategy using the copper(i)-catalyzed azide-alkyne cycloaddition reaction. The synthetic precursor of the [2]rotaxane, featu...
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Rotaxane-type receptors, which were composed of anionic cyclophane-based resorcinarene tetramers as the wheel and a 2,6-disubstituted naphthalene derivative having two fluorophore moieties, such as fluorescein and rhodamine residues, as the axle ( and , respectively), were prepared. Rotaxane-type receptors and bound histone, a small basic protein component of eukaryotic chromatins, with binding...
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ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2018
ISSN: 1433-7851
DOI: 10.1002/anie.201713105