Article (Scientific journals)
Alcohol adducts of N-heterocyclic carbenes: latent catalysts for the thermally-controlled living polymerization of cyclic esters
Coulembier, Olivier; Lohmerijer, B.G.G.; Dove, A.P. et al.
2006In Macromolecules, 39 (17), p. 5617-5628
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Abstract :
[en] Alcohol adducts of the N-heterocyclic carbene, 1,3,4-triphenyl-4,5-dihydro-1H-1,2-triazol-5-ylidene (NHC), function as excellent single-component catalyst/initiators for the ring-opening polymerization of lactide and ß-butyrolactone. Their reversible dissociation at elevated temperatures generates alcohol and triazolylidene carbene to provide a facile entry to polymerization of cyclic esters on demand. Under optimum conditions, adverse transesterification reactions are minimized, and importantly, upon complete consumption of monomer, a second monomer addition facilitates additional polymer growth, even after precipitation. Block copolymers were prepared by combining disparate polymerization techniques from the use of oligo-adducts and bifunctional initiators. Additionally, more complex polymer architectures were prepared from multifunctional or dendritic initiators, further demonstrating the versatility of the N-heterocyclic carbene platform.
Disciplines :
Chemistry
Author, co-author :
Coulembier, Olivier  ;  Université de Mons > Faculté des Sciences > Matériaux Polymères et Composites
Lohmerijer, B.G.G.
Dove, A.P.
Culkin, D.A.
Mespouille, Laetitia 
Benight, S.J.
Dubois, Philippe  ;  Université de Mons > Faculté des Sciences > Matériaux Polymères et Composites
Waymouth, R.M.
Hedrick, James L.
Pratt, Russel C
Language :
English
Title :
Alcohol adducts of N-heterocyclic carbenes: latent catalysts for the thermally-controlled living polymerization of cyclic esters
Publication date :
22 August 2006
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
American Chemical Society (ACS), United States - District of Columbia
Volume :
39
Issue :
17
Pages :
5617-5628
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S816 - Matériaux Polymères et Composites
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Commentary :
Publié en ligne le 26 juillet 2006
Available on ORBi UMONS :
since 10 July 2010

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