Functionalisable acyclic cucurbiturilsDaniel Bauer, Beatrice Andrae, Patrick Gaß, Danjano Trenz, Sabine Becker & Stefan Kubik
Functionalised acyclic cucurbiturils can be prepared in a straightforward fashion and provide access to a wide variety of substituted derivatives.
Self‐Assembly, Adaptive Response, and in , out‐ Stereoisomerism of Large Orthoformate CryptandsMax von Delius, Henrik Löw, Elena Mena‐Osteritz, Kathleen M. Mullen & Christof Jäger
Abstract We report on triethylene glycol-based orthoformate cryptands, which adapt their bridgehead configurations in response to metal templates and intramolecular hydrogen bonding in a complex ma...
Self-templated synthesis of an orthoformate in,in-cryptand and its bridgehead inversion by dynamic covalent exchangeHenrik Löw, Elena Mena-Osteritz & Max von Delius
We report the template-free dynamic covalent self-assembly of a small orthoformate cryptand, which appears to be driven by the formation of two sets of intramolecular, four-centre hydrogen bonds.
Highly Sensitive Fluorescence Response to Inclusion Complex Formation of Berberine Alkaloid with CucurbiturilMónika Megyesi, László Biczók & István Jablonkai
The effect of inclusion complex formation on the fluorescence properties of berberine, a clinically important natural alkaloid, was studied using cucurbituril as macrocyclic host compound. The formation of a very stable 1:1 inclusion complex led to about 500-fold fluorescence intensity enhancement, which facilitated the detection of berberine even below nanomolar concentration. Addition of NaCl caused a significant change in the association constant and the fluorescence characteristics of the complex, whereas the variation of the anion...
Self-assembled orthoester cryptands: orthoester scope, post-functionalization, kinetic locking and tunable degradation kineticsHenrik Löw, Elena Mena-Osteritz & Max von Delius
Self-assembled orthoester cryptands offer appealing properties for applications in ion sensing and transport, such as convenient post-functionalization and tunable biodegradation.
Kinetics of the reversible inclusion of flavopereirine in cucurbiturilZsombor Miskolczy, Laszlo Biczok & István Jablonkai
The temperature dependence of the formation and dissociation kinetics of the flavopereirine–cucurbituril complex is revealed.
Evidence for anion-binding of all-cis hexafluorocyclohexane in solution and solid stateOleksandr Shyshov, Kevin Andre Siewerth & Max von Delius
We report a solution NMR and X-ray crystallographic study on the anion affinity of all-cis 1,2,3,4,5,6-hexafluorocyclohexane, which has only recently become synthetically accessible.
Inclusion Complex Formation of Ionic Liquids and Other Cationic Organic Compounds with Cucurbituril Studied by 4′,6-Diamidino-2-phenylindole Fluorescent ProbeZsombor Miskolczy, László Biczók, Mónika Megyesi & István Jablonkai
The encapsulation of 4′,6-diamidino-2-phenylindole (DAPI) in the cucurbituril (CB7) cavity was studied by absorption, fluorescence, and NMR spectroscopic methods in aqueous solution. The profound change in the fluorescence characteristics was attributed to the formation of a very stable 1:1 inclusion complex. Three independent methods provided (1.1 ± 0.1) × 107 M−1 value for the binding constant. DAPI proved to be an excellent fluorescent probe for the investigation of the competitive binding of ionic liquids, surfactants,...