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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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