Luminescent poly(ethylene glycol)-coated polystyrene (PSt) nanometer-sized particles (nanoparticles) containing trivalent europium or terbium ion were prepared by free-radical dispersion copolymerization of styrene, poly(ethylene glycol) (PEG) macromonomer, and the lanthanide complex which was coordinated with 1,10-phenanthroline possessing acryl group. Red and green luminescences with narrow band width were observed from each nanoparticle containing europium and terbium complexes, respectively.
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Tamaki et al. (2002) studied this question.
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