Cyclometallated Pt(II) Complexes in Visible-Light Photoredox Catalysis: New Polymerization Initiating Systems

Authors

  • Mohamad-Ali Tehfe,

    1. Institut de Science des Matériaux de Mulhouse IS2M–LRC CNRS 7228–ENSCMu-UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex–France
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  • Lihua Ma,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, E-208 West Campus, 2 Linggong Rd., Dalian 116024, China
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  • Bernadette Graff,

    1. Institut de Science des Matériaux de Mulhouse IS2M–LRC CNRS 7228–ENSCMu-UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex–France
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  • Fabrice Morlet-Savary,

    1. Institut de Science des Matériaux de Mulhouse IS2M–LRC CNRS 7228–ENSCMu-UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex–France
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  • Jean-Pierre Fouassier,

    1. UHA-ENSCMu, 3 rue Alfred Werner 68093 Mulhouse
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  • Jianzhang Zhao,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, E-208 West Campus, 2 Linggong Rd., Dalian 116024, China
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  • Jacques Lalevée

    Corresponding author
    1. Institut de Science des Matériaux de Mulhouse IS2M–LRC CNRS 7228–ENSCMu-UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex–France
    • Institut de Science des Matériaux de Mulhouse IS2M–LRC CNRS 7228–ENSCMu-UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex–France.
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Abstract

A household halogen lamp is used to promote the ring-opening photopolymerization of epoxides in the presence of coumarin moiety containing Pt(II) complex/silane/iodonium salt combinations (epoxide/acrylate interpenetrated polymer networks can also be synthesized). Excellent polymerization profiles are obtained (conversions >70%) under this selected very soft irradiation. These Pt(II) complexes behave as photocatalysts in an oxidative cycle. A photoluminescent polymer can be in situ synthesized thanks to the luminescence properties of these complexes. The mechanisms are investigated by ESR, laser flash photolysis, and luminescence experiments.

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