A mini review: supramolecular gels based on calix[4]arene derivatives

Cai, Xiuqin; Zhao, Qiuling

doi:10.1007/s10847-020-01032-8

Cited by 9 publications

(2 citation statements)

References 51 publications

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“…To date, several reviews about supramolecular gels have been reported, giving a full recognition [5,6,[22][23][24][25] or focusing on some specific aspects, such as metallogels, [26][27][28] stimulusresponsive gels, [29][30][31] metal-and anion-binding supramolecular gels, [32] supramolecular hydrogels based on calix [4]arene, [33] cucurbit [8]uril, [33] porphyrin and phthalocyanine, [34] cyclodextrin (CD), [35][36][37] supramolecular shape memory hydrogels, [38] supramolecular gels, catalysis, [39,40] etc. while a review about POM-containing supramolecular gels is still absent though many results in this field have been reported.…”

Section: Introductionmentioning

confidence: 99%

Polyoxometalate‐Containing Supramolecular Gels

Xuan

2022

Macromol. Rapid Commun.

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Supramolecular gels are important soft materials with various applications, which are fabricated through hydrogen bonding, π–π stacking, electrostatic interactions, or host–guest interactions. Introducing functional groups, especially inorganic components, is an efficient strategy to obtain gels with robust architecture and high performance. Polyoxometalates (POMs), as a class of negatively‐charged clusters, have defined structures and multiple interaction sites, resulting in their potential as building blocks for constructing POM‐containing supramolecular gels. The introduction of POMs into gels not only provides strong driving forces for the formation of gels due to the characteristics of charged cluster and oxygen‐rich surface, but also brings new properties sourcing from the unique electronic structures of POMs. Though many POM‐containing gels have been reported, a comprehensive review is still absent. Herein, the concept of POM‐containing gels is discussed, following with the design strategies and driving forces. To better understand the results in the literature, detailed examples, which are classified into several categories based on the types of organic components, are presented to illustrate the gelation process and gel structures. Moreover, applications of POM‐containing gels in energy chemistry, sustainable chemistry, and other aspects are also reviewed, as well as the future developments of this field.

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Section: Introductionmentioning

confidence: 99%

Polyoxometalate‐Containing Supramolecular Gels

Xuan

2022

Macromol. Rapid Commun.

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“…[1][2][3][4][5][6] Many supramolecular gels with fascinating properties have been reported. [7][8][9][10] Unlike other chemical gels, which rely on covalent interactions, supramolecular gels are usually based on non-covalent interactions, including hydrogen bonding, p-p stacking, solvophobic/ solvophilic interaction, electrostatic interaction, van der Waals and dipole-dipole interactions. 11 These interactions endow them with shear-thinning and self-healing properties.…”

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confidence: 99%

Organoboron based photochromic gelator

Zhang,

Zhao,

Yin

et al. 2024

Chem. Commun.

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Calix[4]arene‐based Supramolecular Gels for Mercury Ion Removal in Water

Chen,

Chang,

Chen

et al. 2023

Chemistry An Asian Journal

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A calix[4]arene‐based gelator 1, with lower‐rim mono triazolylpyridine group, capable of spontaneous self‐assembly into microspheres in different ethanol/H2O mixtures, is synthesized. The concentration‐dependent 1H NMR spectra and X‐ray single crystal structure of 1 provided evidences for self‐assembly of gelator 1 via cooperative interactions of intermolecular noncovalent forces. Furthermore, metallogels by self‐assembly of 1 was found to exhibit remarkable selectivity toward Hg2+ ions. 1H NMR spectra support that Hg2+ ion was bound to the nitrogen atoms of two coordination sites of 1, which composed of triazole and pyridine. Moreover, the results of Field Emission Scanning Electron Microscopy and rheology experiments indicated that Hg2+ ions not only enhanced the gelling ability of gelator 1 in ethanol but also led to morphological change of its self‐assembly through metal‐ligand interactions. Finally, the in situ gelation, triggered by mixing a gelator solution of 1 in ethanol with water samples (DI, tap and lake water), leads to the effective removal of Hg(II) from a water sample which reduced from 400 to 1.6 ppm.

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A mini review: supramolecular gels based on calix[4]arene derivatives

Cited by 9 publications

References 51 publications

Polyoxometalate‐Containing Supramolecular Gels

Polyoxometalate‐Containing Supramolecular Gels

Organoboron based photochromic gelator

Calix[4]arene‐based Supramolecular Gels for Mercury Ion Removal in Water

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