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Bielawski, Christopher W.
Synthetic Materials & Macromolecules
Research Interests
  • Synthetic chemistry, materials science, polymer chemistry, catalysis, carbon-based materials

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Photoswitchable NHC-promoted ring-opening polymerizations

Cited 13 times inthomson ciCited 11 times inthomson ci
Title
Photoswitchable NHC-promoted ring-opening polymerizations
Author
Neilson, Bethany M.Bielawski, Christopher W.
Keywords
N-HETEROCYCLIC CARBENES; TRANSFER RADICAL POLYMERIZATION; LIVING POLYMERIZATION; TRANSESTERIFICATION/ACYLATION REACTIONS; ZWITTERIONIC POLYMERIZATION; AMBIENT-TEMPERATURE; LIGHT; CATALYSTS; ORGANOCATALYSTS; ALCOHOLS
Issue Date
201306
Publisher
ROYAL SOC CHEMISTRY
Citation
CHEMICAL COMMUNICATIONS, v.49, no.48, pp.5453 - 5455
Abstract
The UV-induced photocyclization of a dithienylethene-annulated N-heterocyclic carbene precatalyst enabled photoswitchable ring-opening polymerizations of epsilon-caprolactone and delta-valerolactone. The polymerizations proceeded efficiently in ambient light, however UV irradiation attenuated the reaction rate (k(amb)/kUV = 59). Subsequent visible light exposure reversed the photocyclization and restored catalytic activity.
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DOI
http://dx.doi.org/10.1039/c3cc42424c
ISSN
1359-7345
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