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Issue 4, 2007
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Photochemistry in everyday life: The effect of spontaneous emulsification on the photochemistry of trans-anethole

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Abstract

The photochemical behaviour of spontaneously formed microemulsions obtained upon dilution of ethanolic solutions of trans-anethole (E-1-(4-methoxyphenyl)propene, t-A) with water is compared to that of homogeneous ethanolic t-A solutions. Significant differences in reactivity reflect the confined nature of the aggregated t-A which leads to reduced yields of isomerization and dimerization products. In contrast to homogeneous solutions, where a photostationary state enriched in the Z-isomer (c-A) is rapidly reached, the proportion of c-A formed upon irradiation of t-A microemulsions remains below 15%. In the presence of oxygen the formation of trans-anethole oxide is observed which, when formed in non-homogeneous environments, undergoes polymerization.

Graphical abstract: Photochemistry in everyday life: The effect of spontaneous emulsification on the photochemistry of trans-anethole

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Publication details

The article was received on 02 Oct 2006, accepted on 19 Dec 2006 and first published on 24 Jan 2007


Article type: Paper
DOI: 10.1039/B614244C
Citation: Photochem. Photobiol. Sci., 2007,6, 423-430
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    Photochemistry in everyday life: The effect of spontaneous emulsification on the photochemistry of trans-anethole

    D. Carteau, P. Brunerie, B. Guillemat and D. M. Bassani, Photochem. Photobiol. Sci., 2007, 6, 423
    DOI: 10.1039/B614244C

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