Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 22nd May 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 48, 2013
Previous Article Next Article

Photoswitchable NHC-promoted ring-opening polymerizations

Author affiliations


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

Back to tab navigation

Supplementary files

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

  •   Request permissions

    Photoswitchable NHC-promoted ring-opening polymerizations

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

Search articles by author