Polynorbornene-based polyelectrolytes with covalently attached metallacarboranes: synthesis, characterization, and lithium-ion mobility

0544115 - ÚMCH 2022 RIV US eng J - Článek v odborném periodiku
Li, J. - Fernandez-Alvarez, R. - Tošner, Z. - Kozlík, P. - Štěpánek, M. - Zhigunov, Alexander - Urbanová, Martina - Brus, Jiří - Uchman, M. - Matějíček, P.
Polynorbornene-based polyelectrolytes with covalently attached metallacarboranes: synthesis, characterization, and lithium-ion mobility.
Macromolecules. Roč. 54, č. 14 (2021), s. 6867-6877. ISSN 0024-9297. E-ISSN 1520-5835
Grant CEP: GA ČR(CZ) GA20-01233S
Institucionální podpora: RVO:61389013
Klíčová slova: polynorbornene-based polyelectrolytes * metallacarboranes * lithium-ion mobility
Obor OECD: Polymer science
Impakt faktor: 6.057, rok: 2021
Způsob publikování: Omezený přístup
https://pubs.acs.org/doi/10.1021/acs.macromol.1c00350

Metallacarborane clusters, such as COSAN, belong to surface-active and low-coordinating nanosized anions. Therefore, they have been used as separate building blocks in self- and co-assembly. As a step forward, we synthesized via ring-opening metathesis polymerization a novel polyelectrolyte, poly(norbornene-COSAN), PNC, with metallacarborane anions covalently attached to a polynorbornene backbone. The resulting PNC, with the degree of polymerization around 120, is soluble in polar organic solvents, and it can be deposited on a substrate as separate polymer chains or as multichain aggregates, with the bundle-of-fibril patterning. PNC is miscible with polyethylene oxide (PEO), forming the PNC/PEO composite. As shown by solid-state nuclear magnetic resonance spectroscopy, Li+ counterions are firmly coordinated in the PNC matrix, exhibiting rather restricted dynamics. In contrast, the mixing of PNC with PEO leads to a substantial increase of Li+ dynamics. As the result, the mobility of Li+ in the PNC/PEO composite remains almost unrestrained, which makes the COSAN-containing polyelectrolytes promising candidates for ion-conducting materials.
Trvalý link: http://hdl.handle.net/11104/0321483