Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility

Acid-base bifunctional organic polymeric catalysts were synthesized with tunable structures. we demonstrated two synthesis approaches for structural fine-tune. In the first case, the framework flexibility was tuned by changing the ratio of rigid blocks to flexible blocks within the polymer framework...

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Autores principales: Chen, Huanhui, Wang, Yanan, Wang, Qunlong, Li, Junhui, Yang, Shiqi, Zhu, Zhirong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5377424/
https://www.ncbi.nlm.nih.gov/pubmed/25267260
http://dx.doi.org/10.1038/srep06475
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author Chen, Huanhui
Wang, Yanan
Wang, Qunlong
Li, Junhui
Yang, Shiqi
Zhu, Zhirong
author_facet Chen, Huanhui
Wang, Yanan
Wang, Qunlong
Li, Junhui
Yang, Shiqi
Zhu, Zhirong
author_sort Chen, Huanhui
collection PubMed
description Acid-base bifunctional organic polymeric catalysts were synthesized with tunable structures. we demonstrated two synthesis approaches for structural fine-tune. In the first case, the framework flexibility was tuned by changing the ratio of rigid blocks to flexible blocks within the polymer framework. In the second case, we precisely adjusted the acid-base distance by distributing basic monomers to be adjacent to acidic monomers, and by changing the chain length of acidic monomers. In a standard test reaction for the aldol condensation of 4-nitrobenzaldehyde with acetone, the catalysts showed good reusability upon recycling and maintained relatively high conversion percentage.
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spelling pubmed-53774242017-04-05 Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility Chen, Huanhui Wang, Yanan Wang, Qunlong Li, Junhui Yang, Shiqi Zhu, Zhirong Sci Rep Article Acid-base bifunctional organic polymeric catalysts were synthesized with tunable structures. we demonstrated two synthesis approaches for structural fine-tune. In the first case, the framework flexibility was tuned by changing the ratio of rigid blocks to flexible blocks within the polymer framework. In the second case, we precisely adjusted the acid-base distance by distributing basic monomers to be adjacent to acidic monomers, and by changing the chain length of acidic monomers. In a standard test reaction for the aldol condensation of 4-nitrobenzaldehyde with acetone, the catalysts showed good reusability upon recycling and maintained relatively high conversion percentage. Nature Publishing Group 2014-09-30 /pmc/articles/PMC5377424/ /pubmed/25267260 http://dx.doi.org/10.1038/srep06475 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Chen, Huanhui
Wang, Yanan
Wang, Qunlong
Li, Junhui
Yang, Shiqi
Zhu, Zhirong
Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title_full Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title_fullStr Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title_full_unstemmed Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title_short Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility
title_sort bifunctional organic polymeric catalysts with a tunable acid-base distance and framework flexibility
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5377424/
https://www.ncbi.nlm.nih.gov/pubmed/25267260
http://dx.doi.org/10.1038/srep06475
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