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Gold nanoparticle photosensitized radical photopolymerization

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Abstract

We report the photopolymerization of an acrylic monomer using thiol-stabilized gold nanoparticles (AuNPs) and [4-[(octyloxy)phenyl]phenyl] iodonium hexafluoroantimonate (OPPI) as photoinitiator and coinitiator, respectively. Polymerization occurred only when the AuNPs, in the presence of the iodonium salt, were irradiated at the particle plasmonic absorption region (λ > 450 nm). The AuNPs activate the coinitiator by intermolecular electron transfer since OPPI has no absorption in the visible region. Fourier transform infrared spectroscopy was used to monitor polymerization. UV-Vis spectroscopy and transmission electron microscopy measurements were used to characterize the NPs.

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Correspondence to Douglas C. Neckers.

Additional information

Contribution number 699 from the Center for Photochemical Sciences.

This paper was published as part of the themed issue in honour of Nicholas Turro.

Electronic supplementary information (ESI) available: UV-Vis spectra, TEM images, EDX spectrum, near-IR spectra, chemical structures of tested monomer and coinitiator. See DOI: 10.1039/b812328d

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Anyaogu, K.C., Cai, X. & Neckers, D.C. Gold nanoparticle photosensitized radical photopolymerization. Photochem Photobiol Sci 7, 1469–1472 (2008). https://doi.org/10.1039/b812328d

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  • DOI: https://doi.org/10.1039/b812328d

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