Journal ArticleDOI
Controlling factors in the synthesis of cucurbituril and its homologues.
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TLDR
A wide range of reaction conditions are examined that include the effects of acid type, acid concentration, reactant concentrations, and temperature to both probe the mechanism and optimize the yields of isolated cucurbit[n]urils, where n = 5-10.Abstract:
The acid-catalyzed synthesis of cucurbit[n]urils from formaldehyde and glycoluril is poorly understood. In this paper, we examine a wide range of reaction conditions that include the effects of acid type, acid concentration, reactant concentrations, and temperature to both probe the mechanism and optimize the yields of isolated cucurbit[n]urils, where n = 5−10. A mechanism for the formation of these cucurbit[n]urils is presented. Individual cucurbit[n]urils were unambiguously identified in reaction mixtures using ESMS and 13C NMR.read more
Citations
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Journal ArticleDOI
Host-guest complex of a water-soluble cucurbit[6]uril derivative with the hydrochloride salt of 3-amino-5-phenylpyrazole
Yan Feng,Xin Xiao,Sai-Feng Xue,Yun-Qian Zhang,Qian-Jiang Zhu,Zhu Tao,Geoffrey A. Lawrance,Gang Wei +7 more
TL;DR: In this paper, the 1H NMR spectra analysis established a basic interaction model in which an inclusion complex with a host:guest ratio of 1:1 forms, in which the host selectively binds the phenyl moiety of the guest.
Journal ArticleDOI
pH responsive self-assembly of cucurbit[7]urils and polystyrene-block-polyvinylpyridine micelles for hydrophobic drug delivery
TL;DR: Release study of UV active pyrene from the membrane at different pH values revealed that the system is only operational under basic conditions and that the host-guest interaction of CB[7] with P4VPH+ significantly slows down cargo release.
Journal ArticleDOI
Supramolecular encapsulation of vitamin B 6 by macrocyclic nanocontainer cucurbit[7]uril
TL;DR: The results have demonstrated that vitamin B6 forms stable host-guest complexes within CB[7] in 1 : 1 stoichiometry, with a binding affinity of (4.0 ± 0.5) × 103 M-1.
Journal ArticleDOI
Tunable fluorescent pseudorotaxane from axle-length-dependent cucurbit[7]uril complexation
TL;DR: A series of aliphatic-chain-appended linear π-conjugated water-soluble cationic fluorophore axle guests with electronic acceptor–donor–acceptor properties have been synthesized, providing new insight for the construction of pseudorotaxanes and fluorescent materials.
Patent
Introverted cucurbituril compounds
Lyle Isaacs,Simin Liu,Kimoon Kim,Sang-Kyu Park,Young Ho Ko,Hyunuk Kim,Youngkook Kim,Narayanan Selvapalam +7 more
TL;DR: In this paper, the authors used cucurbituril compounds and methods of their production for the molecular recognition of guest compounds, which are used for the recognition of the guest compounds.
References
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Journal ArticleDOI
I. Ueber Condensationsproducte aus Glycoluril und Formaldehyd
Journal ArticleDOI
An efficient, enantioselective synthesis of the taxol side chain
TL;DR: Synthese de la chaine du taxol a partir du phenylacetylene avec comme etapes-cle une epoxydation asymetrique et la scission regioselective de l'epoxyde as mentioned in this paper.
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A Molecular Bowl with Metal Ion as Bottom: Reversible Inclusion of Organic Molecules in Cesium Ion Complexed Cucurbituril
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Cucurbituril as a ligand for the complexation of cations in aqueous solutions
TL;DR: The complex formation of the ligand cucurbituril with alkaline cations and other cations have been studied by means of solubility measurements in the presence of the salts in aqueous solutions at 25 °C.
Journal ArticleDOI
Host–guest complexes of cucurbituril with the 4-methylbenzylammonium lon, alkali-metal cations and NH4+
TL;DR: In this article, the existence of two different complexes of cucurbituril with 4-methylbenzylammonium ions was reported. But the 1 : 1 stability constants were not reported for the 2 : 1 complexes with different cations.