Arsu, N. and Davidson, R.S. (1994) Photoinitiation of Acrylate Polymerization By 2-Methyl-1- [4-(Methylthio)Phenyl]-2-Morpholino-Propan-1-one - some Effects of the Morpholino Substituent. Journal of Photochemistry and Photobiology a-Chemistry, 84 (3). pp. 291-297. ISSN 1010-6030.
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Abstract
N-Isopropylmorpholine (IPM) was used as a model to investigate the properties of the morpholino substituent present in 2-methyl-1-[4-(methylthio)phenyl]-2-morpholino-propan-1-one (1). It was shown by real time IR (RTIR) spectroscopy, photocalorimetry, bulk polymerization studies and the curing of thin films that IPM acts as a physical quencher for the triplet state of 1 and that it is a very poor hydrogen donor. Thus any interaction of the ground state of 1 with its triplet state is likely to lead to physical quenching, thereby reducing the initiating efficiency of 1. Evidence is also presented that the use of high concentrations of N-methyldiethanolamine can lead to reduction of the triplet state of 1, thereby enhancing the initiating efficiency of 1. It was confirmed that thioxanthones can sensitize the alpha cleavage of 1.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Biosciences |
| Depositing User: | P. Ogbuji |
| Date Deposited: | 27 Aug 2009 12:50 |
| Last Modified: | 25 Apr 2012 09:45 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/20364 (The current URI for this page, for reference purposes) |
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