Issue 48, 2013
From the journal:

Chemical Communications

Photoswitchable NHC-promoted ring-opening polymerizations†

Bethany M. Neilsona  and  Christopher W. Bielawski*a  

* Corresponding authors

a Department of Chemistry and Biochemistry, The University of Texas, Austin, USA
E-mail: bielawski@cm.utexas.edu

Abstract

The UV-induced photocyclization of a dithienylethene-annulated N-heterocyclic carbene precatalyst enabled photoswitchable ring-opening polymerizations of ε-caprolactone and δ-valerolactone. The polymerizations proceeded efficiently in ambient light, however UV irradiation attenuated the reaction rate (kamb/kUV = 59). Subsequent visible light exposure reversed the photocyclization and restored catalytic activity.

Graphical abstract: Photoswitchable NHC-promoted ring-opening polymerizations

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Article information

DOI
https://doi.org/10.1039/C3CC42424C
Article type
Communication
Submitted
03 Apr 2013
Accepted
30 Apr 2013
First published
13 May 2013

Chem. Commun., 2013,49, 5453-5455

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Photoswitchable NHC-promoted ring-opening polymerizations

B. M. Neilson and C. W. Bielawski, Chem. Commun., 2013, 49, 5453 DOI: 10.1039/C3CC42424C

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