HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Trityl-based alkoxyamines as NMP controllers and spin-labels

Abstract : Recently, new applications of trityl-nitroxide biradicals were proposed. In the present study, attachment of a trityl radical to alkoxyamines was performed for the first time. The rate constants k(d) of C-ON bond homolysis in these alkoxyamines were measured and found to be similar to those for alkoxyamines without a trityl moiety. The electron paramagnetic resonance (EPR) spectra of the products of alkoxyamine homolysis (trityl-TEMPO and trityl-SG1 biradicals) were recorded, and the corresponding exchange interactions were estimated. The decomposition of trityl-alkoxyamines showed more than an 80% yield of biradicals, meaning that the C-ON bond homolysis is the main reaction. The suitability of these labelled initiators/controllers for polymerisation was exemplified by means of a successful nitroxide-mediated polymerisation (NMP) of styrene. Thus, this is the first report of a spin-labelled alkoxyamine suitable for NMP.
Document type :
Journal articles
Complete list of metadata

Cited literature [9 references]  Display  Hide  Download

Contributor : Valerie Roubaud Connect in order to contact the contributor
Submitted on : Tuesday, March 28, 2017 - 3:55:05 PM
Last modification on : Tuesday, December 14, 2021 - 8:42:06 AM
Long-term archiving on: : Thursday, June 29, 2017 - 4:45:00 PM


Publication funded by an institution


Distributed under a Creative Commons Attribution - NonCommercial 4.0 International License




Gérard Audran, Elena Bagryanskaya,, Paul Brémond, Mariya Edeleva, Marque S.R.A., et al.. Trityl-based alkoxyamines as NMP controllers and spin-labels. Polymer Chemistry, Royal Society of Chemistry - RSC, 2016, 7 (42), pp.6490-6499. ⟨10.1039/c6py01303a⟩. ⟨hal-01408195⟩



Record views


Files downloads