Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 9, Issue 8, Pages 2892-2898Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ob01207f
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Funding
- Agence Nationale de la Recherche ANR [NMP2 07-JCJC0143]
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The search for photosensitive alkoxyamines represents a huge challenge. The key parameters governing the cleavage process remain unknown. The dissociation process of light sensitive alkoxyamines is studied as a function of their chemical structures. The photochemical properties of 6 selected compounds are investigated by ESR and laser flash photolysis. It is found that (i) the selectivity of the cleavable N-O vs. C-O bond and (ii) the efficiency of the nitroxide formation are strongly related to the alkoxyamine structure. The distance between the chromophore and the aminoxy group is a key parameter for an efficient pathway of the radical generation as displayed by the photopolymerization ability of these alkoxyamines.
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