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Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption
[Image: see text] A novel tetraphenylethylene-based ladder network (MP1) made by polycondensation reaction from 4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrakis(benzene-1,2-diol) and 2,3,5,6-tetrafluoroterephthalonitrile and its COOH-functionalized analogue (MP2) were synthesized for the first time. Thei...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6643563/ https://www.ncbi.nlm.nih.gov/pubmed/31458237 http://dx.doi.org/10.1021/acsomega.8b02544 |
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author | Ma, Xiaohua Wang, Yingge Yao, Kexin Ali, Zain Han, Yu Pinnau, Ingo |
author_facet | Ma, Xiaohua Wang, Yingge Yao, Kexin Ali, Zain Han, Yu Pinnau, Ingo |
author_sort | Ma, Xiaohua |
collection | PubMed |
description | [Image: see text] A novel tetraphenylethylene-based ladder network (MP1) made by polycondensation reaction from 4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrakis(benzene-1,2-diol) and 2,3,5,6-tetrafluoroterephthalonitrile and its COOH-functionalized analogue (MP2) were synthesized for the first time. Their structures were confirmed by solid-state nuclear magnetic resonance ((13)C cross-polarization magic angle spinning), Fourier transform infrared spectroscopy, and elementary analysis. MP1 exhibited a high Brunauer–Emmett–Teller surface area (1020 m(2) g(–1)), whereas the COOH-functionalized MP2 showed a much smaller surface area (150 m(2) g(–1)) but displayed a more uniform pore size distribution. Because of the high density of nitrile groups in the network polymers of intrinsic microporosity (PIMs) and strong interaction with quadrupole CO(2) molecules, MP1 exhibited a high CO(2) adsorption capacity of 4.2 mmol g(–1) at 273 K, combined with an isosteric heat of adsorption (Q(st)) of 29.6 kJ mol(–1). The COOH-functionalized MP2 showed higher Q(st) of 34.2 kJ mol(–1) coupled with a modest CO(2) adsorption capacity of 2.2 mmol g(–1). Both network PIMs displayed high theoretical ideal adsorbed solution theory CO(2)/N(2) selectivities (51 and 94 at 273 K vs 34 and 84 at 298 K for MP1 and MP2, respectively). The high selectivities of MP1 and MP2 were confirmed by experimental column breakthrough experiments with CO(2)/N(2) selectivity values of 23 and 45, respectively. Besides the promising CO(2) capture and CO(2)/N(2) selectivity properties, MP1 also demonstrated high sorption capacity for toxic volatile organic vapors. At 298 K and a relative pressure of 0.95, benzene and toluene sorption uptakes reached 765 and 1041 mg g(–1), respectively. Moreover, MP1 also demonstrated some potential for adsorptive separation of xylene isomers with adsorptive selectivity of 1.75 for m-xylene/o-xylene. |
format | Online Article Text |
id | pubmed-6643563 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66435632019-08-27 Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption Ma, Xiaohua Wang, Yingge Yao, Kexin Ali, Zain Han, Yu Pinnau, Ingo ACS Omega [Image: see text] A novel tetraphenylethylene-based ladder network (MP1) made by polycondensation reaction from 4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetrakis(benzene-1,2-diol) and 2,3,5,6-tetrafluoroterephthalonitrile and its COOH-functionalized analogue (MP2) were synthesized for the first time. Their structures were confirmed by solid-state nuclear magnetic resonance ((13)C cross-polarization magic angle spinning), Fourier transform infrared spectroscopy, and elementary analysis. MP1 exhibited a high Brunauer–Emmett–Teller surface area (1020 m(2) g(–1)), whereas the COOH-functionalized MP2 showed a much smaller surface area (150 m(2) g(–1)) but displayed a more uniform pore size distribution. Because of the high density of nitrile groups in the network polymers of intrinsic microporosity (PIMs) and strong interaction with quadrupole CO(2) molecules, MP1 exhibited a high CO(2) adsorption capacity of 4.2 mmol g(–1) at 273 K, combined with an isosteric heat of adsorption (Q(st)) of 29.6 kJ mol(–1). The COOH-functionalized MP2 showed higher Q(st) of 34.2 kJ mol(–1) coupled with a modest CO(2) adsorption capacity of 2.2 mmol g(–1). Both network PIMs displayed high theoretical ideal adsorbed solution theory CO(2)/N(2) selectivities (51 and 94 at 273 K vs 34 and 84 at 298 K for MP1 and MP2, respectively). The high selectivities of MP1 and MP2 were confirmed by experimental column breakthrough experiments with CO(2)/N(2) selectivity values of 23 and 45, respectively. Besides the promising CO(2) capture and CO(2)/N(2) selectivity properties, MP1 also demonstrated high sorption capacity for toxic volatile organic vapors. At 298 K and a relative pressure of 0.95, benzene and toluene sorption uptakes reached 765 and 1041 mg g(–1), respectively. Moreover, MP1 also demonstrated some potential for adsorptive separation of xylene isomers with adsorptive selectivity of 1.75 for m-xylene/o-xylene. American Chemical Society 2018-11-27 /pmc/articles/PMC6643563/ /pubmed/31458237 http://dx.doi.org/10.1021/acsomega.8b02544 Text en Copyright © 2018 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Ma, Xiaohua Wang, Yingge Yao, Kexin Ali, Zain Han, Yu Pinnau, Ingo Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title | Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based
Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title_full | Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based
Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title_fullStr | Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based
Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title_full_unstemmed | Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based
Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title_short | Pristine and Carboxyl-Functionalized Tetraphenylethylene-Based
Ladder Networks for Gas Separation and Volatile Organic Vapor Adsorption |
title_sort | pristine and carboxyl-functionalized tetraphenylethylene-based
ladder networks for gas separation and volatile organic vapor adsorption |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6643563/ https://www.ncbi.nlm.nih.gov/pubmed/31458237 http://dx.doi.org/10.1021/acsomega.8b02544 |
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