Abstract
Luminescent polystyrene microspheres were easily fabricated from poly (styrene-co-methacrylic acid) and aqueous RE(III) chloride solution (RE=Eu, Tb) in the presence of 2,2′-bipyridine as second ligand. The negative charges of carboxyl groups on the surface of microspheres coordinated with rare earth ions at first, such as complexes covalently linked to 2,2′-bipyridine, resulting in strong photoluminescence. Various methods, including transmission electron microscope (TEM), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and fluorescence spectrophotometer, were used to characterize the resultant polystyrene composite microspheres. This work highlights the idea that it is facile to synthesis luminescent microspheres by surface-modified method directly.
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This work was financially supported by the National Natural Science Fundation of China (No.50873085).
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Ma, ZX., Zhang, QT., Liu, JL. et al. Preparation of luminescent polystyrene microspheres via surface-modified route with rare earth (Eu3+ and Tb3+) complexes linked to 2,2′-bipyridine. Rare Met. 34, 590–594 (2015). https://doi.org/10.1007/s12598-014-0263-x
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DOI: https://doi.org/10.1007/s12598-014-0263-x