Photoinitiation of Acrylate Polymerization By 2-Methyl-1- [4-(Methylthio)Phenyl]-2-Morpholino-Propan-1-one - some Effects of the Morpholino Substituent

Arsu, Nergis and Davidson, R. Stephen (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. (The full text of this publication is not available from this repository)

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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: 16 May 2014 09:24
Resource URI: http://kar.kent.ac.uk/id/eprint/20364 (The current URI for this page, for reference purposes)
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