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Dynamic porous organic polymers with tuneable crosslinking degree and porosity

Wessely, Isabelle D. 1; Matt, Yannick 1; An, Qi 2; Bräse, Stefan 1,3; Tsotsalas, Manuel 1,2
1 Institut für Organische Chemie (IOC), Karlsruher Institut für Technologie (KIT)
2 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)
3 Institut für Biologische und Chemische Systeme (IBCS), Karlsruher Institut für Technologie (KIT)


Porous organic polymers (POPs) show enormous potential for applications in separation, organic electronics, and biomedicine due to the combination of high porosity, high stability, and ease of functionalisation. However, POPs are usually insoluble and amorphous materials making it very challenging to obtain structural information. Additionally, important parameters such as the exact molecular structure or the crosslinking degree are largely unknown, despite their importance for the final properties of the system. In this work, we introduced the reversible multi-fold nitroxide exchange reaction to the synthesis of POPs to tune and at the same time follow the crosslinking degree in porous polymer materials. We synthesised three different POPs based on the combination of linear, trigonal, and tetrahedral alkoxyamines with a tetrahedral nitroxide. We could show that modulating the equilibrium in the nitroxide exchange reaction, by adding or removing one nitroxide species, leads to changes in the crosslinking degree. Being able to modulate the crosslinking degree in POPs allowed us to investigate both the influence of the crosslinking degree and the structure of the molecular components on the porosity. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000137459
Veröffentlicht am 30.09.2021
DOI: 10.1039/d1ra05265a
Zitationen: 6
Web of Science
Zitationen: 6
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT 3D Matter Made to Order (3DMM2O)
Institut für Biologische und Chemische Systeme (IBCS)
Institut für Funktionelle Grenzflächen (IFG)
Institut für Organische Chemie (IOC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2046-2069
KITopen-ID: 1000137459
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in RSC Advances
Verlag Royal Society of Chemistry (RSC)
Band 11
Heft 44
Seiten 27714-27719
Vorab online veröffentlicht am 16.08.2021
Nachgewiesen in Web of Science
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