An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions

Li, Zhongfei; Liang, Lili; Wu, Feng; Zhou, Fa-Gen; Ni, Xin‐Long; Feng, Xing; Xiao, Xin; Zhang, Yun‐Qian; Xue, Sai‐Feng; Zhu, Qian‐Jiang; Clegg, Jack K.; Tao, Zhu; Lindoy, Leonard F.; Wei, Gang

doi:10.1039/c3ce26491b

Cited by 34 publications

(12 citation statements)

References 66 publications

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“…We recently demonstrated a series of networks based on the coordination of alkyl‐substituted cucurbit[5]urils (SQ[5]s) with K + ions in the absence of a structure inducer 10. These K‐SQ[5]‐based networks feature trigonal‐planar branches constructed from three SQ[5]s and K + ions in a triangular arrangement,11 in which the coordination of each K + ion to the five portal carbonyl oxygen atoms of one SQ[5], as well as to a bridging portal carbonyl oxygen from an adjacent SQ[5], draws the edges of three portals into close proximity.…”

Section: Resultsmentioning

confidence: 99%

Coordination of Pentacyclohexanocucurbit[5]uril with Alkali Metal Ions and Supramolecular Self‐Assembly in the Absence and Presence of Inorganic Anions

Xiao

et al. 2013

Eur J Inorg Chem

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The coordination of pentacyclohexanocucurbit[5]uril (PCyHQ[5]) to alkali metal cations and the formation of supramolecular assemblies in the absence and presence of [CdCl 4 ] 2or [ZnCl 4 ] 2anions as inorganic structure inducers have been investigated by single-crystal X-ray diffraction analysis. Studies of the crystal structures have revealed that the [CdCl 4 ] 2or [ZnCl 4 ] 2anions do not form honeycomb [a] 3632 structures owing to the presence of alkyl substituents on the surface of the outer walls of PCyHQ[5], which can seriously perturb the interaction of the anions with the outer walls. Moreover, in the presence of [ZnCl 4 ] 2anions, the formation of a new Rb-PCyHQ[5]-based 2D six-membered "bracelet" network suggests that larger ions such as Ba 2+ and even Ra 2+ could form this new type of supramolecular assembly.

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Section: Resultsmentioning

confidence: 99%

Coordination of Pentacyclohexanocucurbit[5]uril with Alkali Metal Ions and Supramolecular Self‐Assembly in the Absence and Presence of Inorganic Anions

Xiao

et al. 2013

Eur J Inorg Chem

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“…Using a similar strategy, the Tao group also prepared a series of 2D networks A-8-12 by using the coordination of K + ion with other substituted Q [5] . 91 Apparently, the electron donating effect of the substituents increased the electron density at the portals of these substituted Q [5] ligands, and hence enhanced their binding affinities.…”

Section: With Alkali Metal Ionsmentioning

confidence: 99%

Supramolecular chemistry of substituted cucurbit[n]urils

Lin

Liu

Chen

et al. 2020

Inorg. Chem. Front.

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“…Among the different substituted CB[n]s, the cyclohexane-based derivatization of the CB[n] (n = 5–8, CyH n CB[n]s) rendered them more soluble in both water and certain organic solvents. For example, 1,4-DiCyHCB[6] exhibited good solubility in water while displaying similar host-guest properties as that of unsubstituted CB[6] albeit the latter is almost insoluble in water [ 285 ].…”

Section: Aspects Of 129 Xe Biosensor Designmentioning

confidence: 99%

Molecular Sensing with Host Systems for Hyperpolarized 129Xe

Jayapaul

Schröder

2020

Molecules

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Hyperpolarized noble gases have been used early on in applications for sensitivity enhanced NMR. 129Xe has been explored for various applications because it can be used beyond the gas-driven examination of void spaces. Its solubility in aqueous solutions and its affinity for hydrophobic binding pockets allows “functionalization” through combination with host structures that bind one or multiple gas atoms. Moreover, the transient nature of gas binding in such hosts allows the combination with another signal enhancement technique, namely chemical exchange saturation transfer (CEST). Different systems have been investigated for implementing various types of so-called Xe biosensors where the gas binds to a targeted host to address molecular markers or to sense biophysical parameters. This review summarizes developments in biosensor design and synthesis for achieving molecular sensing with NMR at unprecedented sensitivity. Aspects regarding Xe exchange kinetics and chemical engineering of various classes of hosts for an efficient build-up of the CEST effect will also be discussed as well as the cavity design of host molecules to identify a pool of bound Xe. The concept is presented in the broader context of reporter design with insights from other modalities that are helpful for advancing the field of Xe biosensors.

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An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions

Cited by 34 publications

References 66 publications

Coordination of Pentacyclohexanocucurbit[5]uril with Alkali Metal Ions and Supramolecular Self‐Assembly in the Absence and Presence of Inorganic Anions

Coordination of Pentacyclohexanocucurbit[5]uril with Alkali Metal Ions and Supramolecular Self‐Assembly in the Absence and Presence of Inorganic Anions

Supramolecular chemistry of substituted cucurbit[n]urils

Molecular Sensing with Host Systems for Hyperpolarized 129Xe

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