Catalytic living ring opening metathesis polymerisation: the importance of ring strain in chain transfer agents
Université de Fribourg
- Liu, Peng Department of Chemistry, University of Fribourg, Switzerland
- Yasir, Mohammad Department of Chemistry, University of Fribourg, Switzerland
- Kilbinger, Andreas F. M. Department of Chemistry, University of Fribourg, Switzerland
-
2019
Published in:
- Angewandte Chemie International Edition. - 2019, vol. 58, no. 43, p. 15278–15282
English
A recently developed catalytic living ring opening metathesis polymerisation (ROMP) was investigated using a series of reversible chain transfer agents (CTA) carrying either cyclopentene or cyclohexene rings, differing only in ring strain. All cyclopentene derivatives examined showed significantly faster reaction rates than the corresponding cyclohexene derivatives. This resulted in lower molecular weight dispersities and better control of the molecular weight for the cyclopentene compared to the cyclohexene CTAs. Both Grubbs’ second and third generation catalysts could be employed in catalytic living ROMP using cyclopentene CTA derivatives. The kinetics of different CTAs were studied, block copolymers were synthesised and residual ruthenium quantified by ICP‐OES. All polymers were fully characterised by NMR, GPC and MALDI‐ToF mass spectrometry. The new cyclopentene CTAs are readily synthesised in a few straightforward steps and provide faster reaction kinetics than all previously reported reversible CTAs.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Chimie
- Language
-
- English
- Classification
- Chemistry
- License
- License undefined
- Identifiers
-
- RERO DOC 327399
- DOI 10.1002/anie.201907921
- Persistent URL
- https://folia.unifr.ch/global/documents/308001
Other files
Statistics
Document views: 91
File downloads:
- kil_clr.pdf: 225
- kil_clr_sm.pdf: 88