Chemistry
Ring opening metathesis polymerization of triazole-bearing cyclobutenes: Diblock copolymer synthesis and evaluation of the effect of side group size on polymerization kinetics
Document Type
Article
Abstract
Cyclobutenes containing pendant groups of varying sizes were polymerized via ring opening metathesis polymerization using Grubbs catalyst 2nd generation (G2). The rate of polymerization depended on the size of the pendant groups attached to the cyclobutene rings, with longer side-chains producing slower polymerization rates and narrower molecular weight distributions. The polymerization of these new molecules proceeded with first order kinetics, consistent with a living polymerization. Chain extension experiments produced cyclobutene-based diblock copolymers with polydispersity indices below 1.33. The synthetic methods in this report will allow the use of G2 to access new complex polymeric architectures with a higher density of pendant groups than those derived from norbornene analogs and cyclooctene moieties. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1929–1939.
Publication Title
Journal of Polymer Science, Part A: Polymer Chemistry
Publication Date
6-2017
Volume
55
Issue
11
First Page
1929
Last Page
1939
ISSN
0887-624X
DOI
10.1002/pola.28565
Keywords
block copolymers, cyclobutene, Grubbs' catalyst 2nd generation, ring opening metathesis polymerization, sterically hindered ROMP
Repository Citation
Wei, Jia; Trout, William; Simon, Yoan C.; and Granados-Focil, Sergio, "Ring opening metathesis polymerization of triazole-bearing cyclobutenes: Diblock copolymer synthesis and evaluation of the effect of side group size on polymerization kinetics" (2017). Chemistry. 79.
https://commons.clarku.edu/chemistry/79