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A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing

Nitrogen-rich porous networks with additional polarity and basicity may serve as effective adsorbents for the Lewis electron pairing of iodine molecules. Herein a carbazole-functionalized porous aromatic framework (PAF) was synthesized through a Sonogashira–Hagihara cross-coupling polymerization of...

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Autores principales: Yan, Zhuojun, Cui, Bo, Zhao, Ting, Luo, Yifu, Zhang, Hongcui, Xie, Jialin, Li, Na, Bu, Naishun, Yuan, Ye, Xia, Lixin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434361/
https://www.ncbi.nlm.nih.gov/pubmed/34500694
http://dx.doi.org/10.3390/molecules26175263
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author Yan, Zhuojun
Cui, Bo
Zhao, Ting
Luo, Yifu
Zhang, Hongcui
Xie, Jialin
Li, Na
Bu, Naishun
Yuan, Ye
Xia, Lixin
author_facet Yan, Zhuojun
Cui, Bo
Zhao, Ting
Luo, Yifu
Zhang, Hongcui
Xie, Jialin
Li, Na
Bu, Naishun
Yuan, Ye
Xia, Lixin
author_sort Yan, Zhuojun
collection PubMed
description Nitrogen-rich porous networks with additional polarity and basicity may serve as effective adsorbents for the Lewis electron pairing of iodine molecules. Herein a carbazole-functionalized porous aromatic framework (PAF) was synthesized through a Sonogashira–Hagihara cross-coupling polymerization of 1,3,5-triethynylbenzene and 2,7-dibromocarbazole building monomers. The resulting solid with a high nitrogen content incorporated the Lewis electron pairing effect into a π-conjugated nano-cavity, leading to an ultrahigh binding capability for iodine molecules. The iodine uptake per specific surface area was ~8 mg m(−2) which achieved the highest level among all reported I(2) adsorbents, surpassing that of the pure biphenyl-based PAF sample by ca. 30 times. Our study illustrated a new possibility for introducing electron-rich building units into the design and synthesis of porous adsorbents for effective capture and removal of volatile iodine from nuclear waste and leakage.
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spelling pubmed-84343612021-09-12 A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing Yan, Zhuojun Cui, Bo Zhao, Ting Luo, Yifu Zhang, Hongcui Xie, Jialin Li, Na Bu, Naishun Yuan, Ye Xia, Lixin Molecules Article Nitrogen-rich porous networks with additional polarity and basicity may serve as effective adsorbents for the Lewis electron pairing of iodine molecules. Herein a carbazole-functionalized porous aromatic framework (PAF) was synthesized through a Sonogashira–Hagihara cross-coupling polymerization of 1,3,5-triethynylbenzene and 2,7-dibromocarbazole building monomers. The resulting solid with a high nitrogen content incorporated the Lewis electron pairing effect into a π-conjugated nano-cavity, leading to an ultrahigh binding capability for iodine molecules. The iodine uptake per specific surface area was ~8 mg m(−2) which achieved the highest level among all reported I(2) adsorbents, surpassing that of the pure biphenyl-based PAF sample by ca. 30 times. Our study illustrated a new possibility for introducing electron-rich building units into the design and synthesis of porous adsorbents for effective capture and removal of volatile iodine from nuclear waste and leakage. MDPI 2021-08-30 /pmc/articles/PMC8434361/ /pubmed/34500694 http://dx.doi.org/10.3390/molecules26175263 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yan, Zhuojun
Cui, Bo
Zhao, Ting
Luo, Yifu
Zhang, Hongcui
Xie, Jialin
Li, Na
Bu, Naishun
Yuan, Ye
Xia, Lixin
A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title_full A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title_fullStr A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title_full_unstemmed A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title_short A Carbazole-Functionalized Porous Aromatic Framework for Enhancing Volatile Iodine Capture via Lewis Electron Pairing
title_sort carbazole-functionalized porous aromatic framework for enhancing volatile iodine capture via lewis electron pairing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434361/
https://www.ncbi.nlm.nih.gov/pubmed/34500694
http://dx.doi.org/10.3390/molecules26175263
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