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Household LED irradiation under air: cationic polymerization using iridium or ruthenium complex photocatalysts

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Abstract

Household LED bulbs are used to promote the ring-opening photopolymerization of epoxides in the presence of a photocatalyst (here tris(2-phenylpyridine)iridium [Ir(ppy)3] or tris(1,10-phenanthroline)ruthenium(II) [Ru(phen) 2+3 ] complex) and a silyl radical source. Remarkably, even under this very soft irradiation (light intensity lower than 10 mW/cm²), excellent polymerization profiles are obtained i.e., this is the first reported use of such very convenient irradiation devices for photopolymerization processes. The role of the silane and other hydrogen donors is outlined.

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Acknowledgments

This study was supported by the “Agence Nationale de la Recherche” grant ANR 2010-BLAN-0802.

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Authors and Affiliations

  1. LPIM-Department of Photochemistry, University of Haute Alsace, ENSCMu, 3 rue Alfred Werner, 68093, Mulhouse Cedex, France

    Jacques Lalevée, Mohamad-Ali Tehfe, Mathieu Peter, Fabrice Morlet-Savary & Jean Pierre Fouassier

  2. Laboratory of Organic and Bioorganic Chemistry, University of Haute Alsace, ENSCMu, 3 rue Alfred Werner, 68093, Mulhouse Cedex, France

    Nicolas Blanchard

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  1. Jacques Lalevée
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  2. Nicolas Blanchard
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  3. Mohamad-Ali Tehfe
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  4. Mathieu Peter
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  5. Fabrice Morlet-Savary
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  6. Jean Pierre Fouassier
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Correspondence to Jacques Lalevée or Nicolas Blanchard.

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Lalevée, J., Blanchard, N., Tehfe, MA. et al. Household LED irradiation under air: cationic polymerization using iridium or ruthenium complex photocatalysts. Polym. Bull. 68, 341–347 (2012). https://doi.org/10.1007/s00289-011-0541-9

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  • DOI: https://doi.org/10.1007/s00289-011-0541-9

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