Fluorescent polymer particles incorporating pyrene derivatives |
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| Authors: | Toshiyuki Tamai Mitsuru Watanabe Hajime Maeda Kazuhiko Mizuno |
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| Institution: | 1. Osaka Municipal Technical Research Institute, 1‐6‐50 Morinomiya, Joto‐ku, Osaka 536‐8553, Japan;2. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1‐1 Gakuen‐cho, Naka‐ku, Sakai, Osaka 599‐8531, Japan |
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| Abstract: | Fluorescent polymer particles incorporating pyrene and alkynylpyrenes were prepared by miniemulsion polymerization of styrene. The pyrenes were simply dissolved in styrene monomer and then added to the reaction mixture in a vessel, followed by ultrasonication and the polymerization. The pyrenes were incorporated in the polystyrene particles and gave monomer fluorescence emission. The fluorescent particles incorporating the alkynylpyrenes, which have high fluorescence quantum yield and short fluorescence lifetime, showed the same fluorescence emission intensity under air and nitrogen. The fluorescence of the alkynylpyrenes in the polymer particles will not be quenched by molecular dioxygen in contrast to that in organic solvents. Incorporation of fluorophore into polymer particles will protect the fluorophore from its undesirable interaction with oxygen, affording the particles highly fluorescent even under air. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 1470–1475, 2008 |
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| Keywords: | emulsion polymerization fluorescence lattices nanoparticles |
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