Projects per year
Abstract
Cyclic polyesters could improve the properties of degradable plastics,
but routes to them that provide a product with faster rates, higher
molar mass, and greater selectivity for cyclic vs linear polymer
are needed. Here, homogeneous Ce(III)–N-heterocyclic carbene (NHC)
catalysts show outstanding activities (turn-over-frequency (TOF) >
864 000 h–1), excellent control, and selectivity for cyclic polylactide (PLA) topology (>95%), yielding high molar mass PLA (60 < Mn < 250 kg mol–1). They efficiently produce cyclic PLA from rac-lactide or l-lactide
and aliphatic cyclic polyesters from ε-caprolactone or β-butyrolactone.
The enhanced performances are only achievable from combining
cooperative Lewis acidic cerium(III) and hemilabile N-heterocyclic carbene functionalities.
Original language | English |
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Pages (from-to) | 1563-1569 |
Journal | ACS Catalysis |
Volume | 11 |
Early online date | 15 Jan 2021 |
DOIs | |
Publication status | E-pub ahead of print - 15 Jan 2021 |
Keywords
- Polymerization
- Catalysis
- Cerium
- Polylactide
- Cyclic
- NHC
Fingerprint
Dive into the research topics of 'Ultrarapid cerium(III)–NHC catalysts for high molar mass cyclic polylactide'. Together they form a unique fingerprint.Projects
- 2 Finished
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CRITICAT CDT: Critical Resource Catalysis - CRITICAT
Smith, A. D. (PI), Nolan, S. P. (CoI) & Westwood, N. J. (CoI)
1/05/14 → 31/10/22
Project: Standard
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Clean catalysis for sustainable develop: Clean catalysis for sustainable development
Kamer, P. C. J. (PI)
1/11/12 → 31/10/17
Project: Standard
Datasets
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CCDC 1986496: Experimental Crystal Structure Determination
Kerr, R. W. F. (Creator), Ewing, P. M. D. A. (Creator), Raman, S. K. (Creator), Smith, A. D. (Creator), Williams, C. K. (Creator) & Arnold, P. L. (Creator), Cambridge Crystallographic Data Centre, 2021
DOI: 10.5517/ccdc.csd.cc24p3jh
Dataset