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Ultrastable Imine-Based Covalent Organic Frameworks for Sulfuric Acid Recovery: An Effect of Interlayer Hydrogen Bonding

Halder A, Karak S, Addicoat M, Bera S, Chakraborty A, Kunjattu SH, Pachfule P, Heine T, Banerjee R (2018)

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Publication Type: Journal article

Publication year: 2018

Journal

Book Volume: 57

Pages Range: 5797-5802

Journal Issue: 20

DOI: 10.1002/anie.201802220

Abstract

A rapid and scalable synthesis of six new imine-linked highly porous and crystalline COFs is presented that feature exceptionally high chemical stability in harsh environments including conc. H2SO4 (18 m), conc. HCl (12 m), and NaOH (9 m). This is because of the presence of strong interlayer C−H⋅⋅⋅N hydrogen bonding among the individual layers, which provides significant steric hindrance and a hydrophobic environment around the imine (−C=N−) bonds, thus preventing their hydrolysis in such an abrasive environment. These COFs were further converted into porous, crystalline, self-standing, and crack-free COF membranes (COFMs) with extremely high chemical stability for their potential applications for sulfuric acid recovery. The as-synthesized COFMs exhibit unprecedented permeance for acetonitrile (280 Lm⁻² h⁻¹ bar⁻¹) and acetone (260 Lm⁻² h⁻¹ bar⁻¹).

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How to cite

APA:

Halder, A., Karak, S., Addicoat, M., Bera, S., Chakraborty, A., Kunjattu, S.H.,... Banerjee, R. (2018). Ultrastable Imine-Based Covalent Organic Frameworks for Sulfuric Acid Recovery: An Effect of Interlayer Hydrogen Bonding. Angewandte Chemie International Edition, 57(20), 5797-5802. https://doi.org/10.1002/anie.201802220

MLA:

Halder, Arjun, et al. "Ultrastable Imine-Based Covalent Organic Frameworks for Sulfuric Acid Recovery: An Effect of Interlayer Hydrogen Bonding." Angewandte Chemie International Edition 57.20 (2018): 5797-5802.

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