Supramolecular hyperbranched polymer gels based on pillar[5]arene and their applications in removal of micropollutants from water

Lv, Xiaoqing; Xia, Danyu; Cheng, Yuanbing; Liu, Yaoming; Zhang, Junjie; Wei, Xuehong; Wang, Pi

doi:10.1039/d2qi01656g

Cited by 7 publications

(5 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…P5As are uniquely rigid pillar-like structures in which hydroquinone units are connected to each other via methylene bridges in para positions. , They can form stable host–guest complexes with a variety of guest moieties including nitriles, pyridinium salts, alkylamines, organic ammonium salts, and haloalkanes. − This versatility found correspondence in a report by Wang and co-workers showing the utilization of P5A-based cross-linked supramolecular polymers in the formation of responsive glues based on pH-dependent catechol-Fe n+ complexes . Metal–ligand coordination- and π–π stacking-based supramolecular networks of P5As were also demonstrated by means of linear and discrete architectures. − P5A-based supramolecular network and hyperbranched polymers were also utilized in the removal of micropollutants from water and exhibited considerable promise. , …”

Section: Introductionmentioning

confidence: 91%

“…20−22 P5A-based supramolecular network and hyperbranched polymers were also utilized in the removal of micropollutants from water and exhibited considerable promise. 23,24 Although the host−guest chemistry of P5As mainly relies on the recognition of cationic and neutral guest moieties, anion recognition-based supramolecular polymers are also known. In this context, calix [4] molecular polymers 10,25−27 and the removal of micropollutants from water when they are incorporated into rationally designed macromolecular architectures.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cross-Linked Supramolecular Polymer Based on Calix[4]pyrrole-Decorated Pillar[5]arene and Its Application in Micropollutant Removal

Ünlü,

Aydogan

2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

A calix[4]pyrrole-decorated pillar[5]arene was synthesized via azide-alkyne “click” chemistry and used to prepare a cross-linked supramolecular polymer in chloroform based on the anion recognition ability of calix[4]pyrrole. Complexation experiments revealed that while one of the cross-linkers, terephthalate anion, was not able to form strong complexation, suberate anion was found to act as a suitable cross-linker. Supramolecular polymerization and performance of monomers were monitored with a combination of techniques including 1H-, diffusion-ordered 1H NMR spectroscopy experiments, viscosity, and SEM analyses. Thermo and competing anion responsiveness of the cross-linked supramolecular polymer were also shown by means of 1H-NMR analyses and viscosity measurements. Micropollutant removal ability of the cross-linked supramolecular polymer in solid and gel forms was also investigated by using methylene blue, methyl violet 2B, and rhodamine B as surrogate pollutants, and UV/Vis experiments revealed that while the solid form of the supramolecular polymer performs better in the case of methylene blue and methyl violet, its gel form provides slightly better removal efficiency for rhodamine B.

show abstract

Section: Introductionmentioning

confidence: 91%

Section: ■ Introductionmentioning

confidence: 99%

Cross-Linked Supramolecular Polymer Based on Calix[4]pyrrole-Decorated Pillar[5]arene and Its Application in Micropollutant Removal

Ünlü,

Aydogan

2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…Recently, Wang, Wei, Xia, and coworkers fabricated a supramolecular hyperbranched polymer gel (SHPG) based on an AB 2 -type monomer constructed by a pillar [5]arene and two aza-stilbene derivative groups (MG) (Figure 3b). [61] Benefiting from the protonation and deprotonation of monomer upon the addition of trifluoroacetic acid and triethylamine, respectively, SHPG exhibited pH-responsiveness and could form another supramolecular hyperbranched polymer gel (SHPG•H + ) with 3D network morphology. Furthermore, the transformation from SHPG into metallo-supramolecular polymer networks was achieved by adding Pd 2+ due to the metal coordination property of MG at the outside of the pillar [5]arene cavity.…”

Section: Gels and Xerogelmentioning

confidence: 99%

mentioning

confidence: 99%

Pillararene‐Based Supramolecular Polymers for Adsorption and Separation

Wang

Yang

2023

Advanced Materials

View full text Add to dashboard Cite

Supramolecular polymers have attracted increasing attention in recent years due to their perfect combination of supramolecular chemistry and traditional polymer chemistry. The design and synthesis of macrocycles have driven the rapid development of supramolecular chemistry and polymer science. Pillar[n]arenes, a new generation of macrocyclic compounds possessing unique pillar‐shaped structures, nano‐sized cavities, multi‐functionalized groups, and excellent host–guest complexation abilities, are promising candidates to construct supramolecular polymer materials with enhanced properties and functionalities. This review summarizes recent progress in the design and synthesis of pillararene‐based supramolecular polymers (PSPs) and illustrates their diverse applications as adsorption and separation materials. All performances are evaluated and analyzed in terms of efficiency, selectivity, and recyclability. Typically, PSPs can be categorized into three typical types according to their topologies, including linear, cross‐linked, and hybrid structures. The advances made in the area of functional supramolecular polymeric adsorbents formed by novel pillararene derivatives are also described in detail. Finally, the remaining challenges and future perspectives of PSPs for separation‐based materials science are discussed. We envision that this review will inspire new researchers in different fields and stimulate creative designs of supramolecular polymeric materials based on pillararenes and other macrocycles for effective adsorption and separation of a variety of targets.This article is protected by copyright. All rights reserved

show abstract

“…Aerogel, a kind of highly porous solid materials, has the characteristics of ultra-low density, excellent stability, and large specific surface area. [14] Recently, a series of carbon nanotube aerogel, [15] graphene oxide aerogels, [16,17] and supramolecular aerogels [18] have been prepared and used to remove a variety of micro-pollutants in water. Aerogels with hierarchical porous structure or periodic macropores can be obtained by 3D printing, [19] freeze drying, [20] and hybridizing various components (such as metal-organic frameworks and nano-cellulose).…”

Section: Introductionmentioning

confidence: 99%

A Hierarchical Porous Aerogel Prepared from Conjugated Polymer for Rapid and Effective Removal of Organic Micro‐Pollutants from Water

Shang,

Zheng,

Chen

et al. 2023

Macro Chemistry & Physics

View full text Add to dashboard Cite

Water pollution caused by organic micro‐pollutants is seriously harmful to aquatic ecosystem and human health. In this work, a hierarchical porous aerogel (HPAG) prepared from rigid conjugated polymers was used to remove organic micro‐pollutants from water. Thanks to the hierarchical porous structure and rich π electrons, HPAG showed fast adsorption rate and high adsorption capacity for adsorbates. The maximum equilibrium adsorption capacity of HPAG for bisphenol A, 1‐naphthylamine and naphthalene was 60.5, 50.9 and 63.9 mg g−1 at 10 ppm, respectively, and the adsorption behaviors were in accordance with the Freundlich model. HPAG exhibited high preference in adsorbing organic micro‐pollutants with high hydrophobicity, and the removal efficiency for polycyclic aromatic hydrocarbons reached over 95%. The HPAG can be easily recycled and regenerated after washing with dichloromethane, and the adsorption performance maintained above 82% after 5 cycles.This article is protected by copyright. All rights reserved

show abstract

Supramolecular hyperbranched polymer gels based on pillar[5]arene and their applications in removal of micropollutants from water

Abstract: An AB2-type monomer 1 based on a pillar[5]arene host and an azastilbene derivative guest was synthesized by a facile method. In chloroform, the monomer 1 self-assembled to form a supramolecular...

Cited by 7 publications

References 78 publications

Cross-Linked Supramolecular Polymer Based on Calix[4]pyrrole-Decorated Pillar[5]arene and Its Application in Micropollutant Removal

Cross-Linked Supramolecular Polymer Based on Calix[4]pyrrole-Decorated Pillar[5]arene and Its Application in Micropollutant Removal

Pillararene‐Based Supramolecular Polymers for Adsorption and Separation

A Hierarchical Porous Aerogel Prepared from Conjugated Polymer for Rapid and Effective Removal of Organic Micro‐Pollutants from Water

Contact Info

Product

Resources

About