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Issue 48, 2013
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Photoswitchable NHC-promoted ring-opening polymerizations

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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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Publication details

The article was received on 03 Apr 2013, accepted on 30 Apr 2013 and first published on 13 May 2013


Article type: Communication
DOI: 10.1039/C3CC42424C
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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