Tuneable pseudorotaxane formation between a biotin–avidin bioconjugate and CBPQT4+

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Tuneable pseudorotaxane formation between a biotin-avidin bioconjugate and CBPQT4+.

A biotinylated 1,5-dialkoxynaphthalene derivative has been shown to have the ability to bind strongly to avidin and thus act as an artificial binding site for cyclobis(paraquat-p-phenylene) thereby facilitating the formation of a tuneable pseudorotaxane-based bioconjugate.

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[2]Pseudorotaxane formation between rigid Y-shaped 2,4,5-triphenylimidazolium axles and [24]crown-8 ether wheels.

A new templating motif for the formation of [2]pseudorotaxanes is described in which rigid, Y-shaped axles with an imidazolium core and aromatic substituents at the 2-, 4- and 5-positions interact with [24]crown-8 ether wheels ([24]crown-8 and dibenzo[24]crown-8). The Y-shape of the axle significantly enhances the association between axle and wheel when compared to simple imidazolium cations.

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Cation recognition and pseudorotaxane formation of tris-dipyrrin BF2 macrocycles.

Macrocyclic planar tris-dipyrrin BF(2) complexes exhibit strong alkali-metal recognition and pseudorotaxane formation ability with a secondary ammonium salt through BF(2)-cation interactions.

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Anion recognition as a method for templating pseudorotaxane formation.

Two thread-shaped cations, pyridinium nicotinamide and imidazolium, as their chloride and hexafluorophosphate salts, were studied with regards to complexation with hydrogen-bond-donating acyclic and macrocyclic ligands. In the latter case, the cations form pseudorotaxanes templated by the chloride anion but not hexafluorophosphate. This formation is a function of the coupling of ion-pairing bet...

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ژورنال

عنوان ژورنال: Chemical Communications

سال: 2008

ISSN: 1359-7345,1364-548X

DOI: 10.1039/b803856b