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Towards Organic Zeolites - Functional Frameworks for Catalysis and Energy Applications

Seminarium

Abstract:
Microporous Polymer Networks, MPNs, and Covalent Organic Frameworks, COFs, are emerging new classes of functional porous materials, which combine several advantages of polymeric materials with conventional porous matter, like zeolites, activated charcoals or metal organic frameworks.[1] MPNs and COFs exhibit exceptionally high porosities and surface areas, while their covalent nature ensures high thermal and chemical stability. Furthermore as solely composed of organic compounds an exquisite control over the chemical nature of the large accessible surface areas as well as the physical properties of the resulting networks is possible. All these properties make MPNs and COFs interesting for emerging applications such as energy storage[2] and also open new prospects in the field of catalysis, from organocatalysis[3] to electro- and photocatalysis.[4] Polymerizing molecular catalysts into open framework structures indeed can be seen as a promising strategy to unify homogeneous and heterogeneous catalysis.[5] Recently we furthermore presented MPNs and COFs with permanent ionic charges in the organic backbone, which are counterbalanced by extra-framework cations or anions within the cavities of the porous network.[6] Such materials thus feature great similarities to inorganic zeolites and can complement them in a variety of applications.

[1] N. Chaoui, M. Trunk, R. Dawson, J. Schmidt, A. Thomas, Chem. Soc. Rev. 2017, 46, 3302

[2] Liao, Y.; Li, J; Thomas, A. ACS Macro Lett. 2017, 6, 1444

[3] Trunk, M., Teichert, J.; Thomas, A. J. Am. Chem. Soc. 2017, 139, 3615

[4] Pachfule, P.; Acharjya, A.; Roeser, J.; Langenhahn, T.; Schwarze, M.; Schomäcker, R.; Thomas, A.; Schmidt, J. J. Am. Chem. Soc. 2018, 140, 1423¿1427

[5] X. Zhao, X.; Pachfule, P.; Li, S.; Langenhahn, T.; Ye, M.; Schlesiger, C.; Praetz, S.; Schmidt, J.; Thomas, A. J. Am. Chem. Soc. 2019, 141, 6623-6630

[6] a) S. Fischer, J. Schmidt, P. Strauch, A. Thomas, Angew. Chem. Int. Ed. 2013, 52, 12174, b) J. Roeser, D. Prill, M.J. Bojdys, P. Fayon, A. Trewin, A. N. Fitch, M.U. Schmidt, A. Thomas, Nat. Chem. 2017, 9, 977

Föreläsare: Arne Thomas, Technical University of Berlin, https://www.chemie.tu-berlin.de/menue/ueber_uns/mitarbeitende/personen/t/thomas/

Datum: 2020-04-02

Tid: 12:00 - 13:00

Kategorier: Naturvetenskap

Plats: Campus Johanneberg, Kemihuset, sal KC

Kontaktperson: Karl Börjesson

Sidansvarig: |Sidan uppdaterades: 2012-01-02
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