A recyclable hydroxyl functionalized polyindole hydrogel for sodium hydroxide extraction <i>via</i> the synergistic effect of cation–π interactions and hydrogen bonding

Chang, Guanjun; Wang, Yan; Wang, Cheng; Li, Yannan; Xu, Yewei; Yang, Li

doi:10.1039/c8cc05819a

Cited by 28 publications

(11 citation statements)

References 34 publications

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“…As a comparison, microporous aerogel poly(hydroxyl indole) (PHOIN) was also prepared using the same method (Schemes S1−S4). 35,36 The successful growth of the as-synthesized MOPs was confirmed by solid-state crosspolarization magic-angle-spinning nuclear magnetic resonance (CP/MAS NMR) spectrometry and Fourier transform infrared (FT-IR). Figure 2a displays the 13 C CP/MAS NMR spectrum of PHOIN-NH 2 , where the peaks at approximately 134 ppm correspond to the central core phenyl carbons of the phenyl amine.…”

Section: ■ Introductionmentioning

confidence: 99%

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion

Wang

Yang

et al. 2019

ACS Appl. Polym. Mater.

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A hydroxyl-containing and aniline-functionalized indolebased microporous organic polymer (MOP) material poly(hydroxyl indole)-NH 2 (PHOIN-NH 2 ) has been successfully designed and synthesized. It was first proven that, due to the electron-rich benzene ring of the aniline group and the electron donor hydroxyl groups donating their electron density to the inner indole ring, the highly electron-rich π indole plane can simultaneously attract two CO 2 molecules via the double local dipole-π interactions, thereby forming a "CO 2 −indole−CO 2 " sandwich-like structure and endowing this microporous material with a remarkable CO 2 adsorption capacity (33 wt %). In addition, due to the classical acid−base interaction between the aniline group in the PHOIN-NH 2 aerogel and the CO 2 molecule, the resulting material displays excellent gas selectivity (CO 2 /N 2 = 146, CO 2 /CH 4 = 24). Moreover, the phenolic−OH groups in the PHOIN-NH 2 aerogel provide an abundance of sites for anchoring Zn 2+ via metal-coordination interactions for effective conversion of CO 2 into propylene carbonate.

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Section: ■ Introductionmentioning

confidence: 99%

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion

Wang

Yang

et al. 2019

ACS Appl. Polym. Mater.

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“…Until now, the reversible effects arising from dynamic covalent bonds (transesterification reaction, − disulfide bond, − Diels–Alder reactions, − etc.) and noncovalent supramolecular interactions (hydrogen bonding, , metal coordination, − host–guest interactions, ,, and π–π stacking interactions) have been achieved. Dichtel et al fabricated an acid-degradable polycarbonate material with recyclability based on trans-carbonation exchange chemistry, having a high tensile strength (36 MPa) and Young’s modulus (∼1 GPa).…”

Section: Introductionmentioning

confidence: 99%

Assembling of Reprocessable Polybutadiene-Based Vitrimers with High Strength and Shape Memory via Catalyst-Free Imine-Coordinated Boroxine

Yang

Huang

et al. 2020

ACS Appl. Mater. Interfaces

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Vitrimers endow cross-linked polymers with malleability and reprocessability via exchange reactions. However, designing of reprocessable, shape-memory polymer materials with high strength via a catalyst-free method remains a challenge under mild conditions. Here, we propose a facile strategy to address this dilemma by introducing the exchangeable imine bond and N-coordinated boroxine into a polybutadiene (PB)-based network. Specifically, PB grafted with 2-aminoethanethiol is reacted with the formyl group of phenylboronic acid and dehydrated to form a dual-dynamic covalently cross-linked network at room temperature. The dynamic network draws on the advantage of imine (toughness) and N-coordinated boroxine (strength), making the PB-based materials exhibit favorable malleability, mechanical property, reprocessability, and thermal-induced shape-memory behavior. We can obtain customized high mechanical properties by tuning the cross-linking density, and the tensile strength reaches a high value (12.35 MPa) without fillers or any other additives. Meanwhile, the unique network framework makes the material recycle over several times without sacrificing its property. This work presents a facile and effective approach to achieve a multifunctional polymer with customized attributes. Besides, this strategy can recycle end-of-life rubber to alleviate environmental pollution and provide inspiration for fabricating targeted materials by uniting the dynamic covalent or noncovalent bonds.

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“…Liquid–solid extraction is another option that utilizes predominantly ion exchange to induce an anion transport into a semisolid environment as the organic receptor is grafted on a membrane , or solid support such as MOFs, polymers, or hydrogels. , There were also attempts to utilize a discrete insoluble anion receptor. , Generally, liquid–solid extraction is a slow, diffusion-driven process employing only a fraction of the present complexation sites.…”

Section: Introductionmentioning

confidence: 99%

Transport of Anions across the Dialytic Membrane Induced by Complexation toward Dendritic Receptors

et al. 2021

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A novel approach to inducing anion transport over the dialytic membrane was proposed and successfully tested using the dihydrogen phosphate anion. The anion receptor based on isophthalamide was anchored on a dendritic skeleton, resulting in a macromolecular structure with a limited possibility to cross the dialytic membrane. The dendritic receptor was placed in a compartment separated from a mother anion solution by a membrane. The resulting anion complexation reduced the actual concentration of the anion and induced the anion transfer across the membrane. The anion concentration in mother solution decreased, while it was found to be increased in the compartment with the dendritic receptor. This phenomenon was observed using dendritic receptors with four and eight complexation sites. A detailed analysis of a series of dialytic experiments by 1 H NMR spectroscopy enabled an assessment of the complexation behavior of both receptors and an evaluation of the dendritic effect on the anion complexation.

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A recyclable hydroxyl functionalized polyindole hydrogel for sodium hydroxide extraction via the synergistic effect of cation–π interactions and hydrogen bonding

Cited by 28 publications

References 34 publications

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion

Assembling of Reprocessable Polybutadiene-Based Vitrimers with High Strength and Shape Memory via Catalyst-Free Imine-Coordinated Boroxine

Transport of Anions across the Dialytic Membrane Induced by Complexation toward Dendritic Receptors

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A recyclable hydroxyl functionalized polyindole hydrogel for sodium hydroxide extraction via the synergistic effect of cation–π interactions and hydrogen bonding

Cited by 28 publications

References 34 publications

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO2 Capture and Conversion

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO2 Capture and Conversion

Assembling of Reprocessable Polybutadiene-Based Vitrimers with High Strength and Shape Memory via Catalyst-Free Imine-Coordinated Boroxine

Transport of Anions across the Dialytic Membrane Induced by Complexation toward Dendritic Receptors

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Product

Resources

About

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion

Sandwich-like Structure of Indole and Carbon Dioxide with Efficient CO₂ Capture and Conversion