Journal
MACROMOLECULES
Volume 44, Issue 20, Pages 7956-7961Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma2015529
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Funding
- DARPA
- Tufts University
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0821508] Funding Source: National Science Foundation
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This paper describes controlled ring-opening metathesis polymerizations (ROMP) of norbornene derivatives that bear photoreactive o-nitrobenzyl ester (NBE) moieties. Termination reactions have frustrated previous reported attempts to execute controlled radical polymerizations with nitrobenzyl ester-containing acrylate derivatives. We therefore prepared new NEE-containing norbomene C derivatives, and found that polymerization with Grubbs's ruthenium carbene catalysts led to complete consumption of monomer in minutes to hours and yielded polymers with predictable molecular weights. We also demonstrate the preparation of NBE-containing block copolymers and show through UV irradiation of these polymers in solution and in thin film that the NBE moieties remain photoreactive.
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