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Oxidation of 4-substituted TEMPO derivatives reveals modifications at the 1- and 4-positions

Marshall, David L; Christian, Meganne L; Gryn'ova, Ganna; Coote, Michelle; Barker, Philip J; Blanksby, Stephen James


Potenital pathways for the deactivation of hindered amine light stabilisers (HALS) have been investigated by observing reactions of model compounds - based on 4-substituted derivatives of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) - with hydroxyl radicals. In these reactions, dilute aqueous suspensions of photocatalytic nanoparticulate titanium dioxide were irradiated with UV light in the presence of water-soluble TEMPO derivatives. Electron spin resonance (ESR) and electrospray ionisation...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Organic and Biomolecular Chemistry
DOI: 10.1039/c1ob05037k


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