Synthesis of Multifunctional Microspheres Having Polymer Brush with Magnetism, Fluorescence and pH-Responsiveness
作者：Tuanwei Liu, Bin Liu, Xiaomeng Fu, Shuxuan Sun, Wei Liu, Guomin Bian, Yonglin Qi, and Xinlin Yang*
关键字：Magnetic nanoparticles; Fluorescent nanoparticles; Surface-initiated ATRP; pH-responsive nanoparticles.
论文来源：期刊
具体来源：Colloid Polymer Science, 293 (3), 809-816 (2015). DOI: 10.1007/s00396-014-3469-4
发表时间：2015年
Multifuctional magnetite@silica-fluorescein isothioxylate-g-poly(dimethyl amino ethyl methacrylate)
(Fe3O4@SiO2-FITC-g-PDMAEMA) tri-layer microspheres
with magnetism, fluorescence, and pH-responsive PDMAEMA shell were designed and
prepared. The functional PDMAEMA brush was grafted from Fe3O4@SiO2-FITC
nanoparticles by the surface-induced atom transfer radical polymerization
(SI-ATRP) onto the alkylbromide-modified Fe3O4@SiO2-FITC
fluorescent templates, which were synthesized by the co-precipitation of Fe(II)
and Fe(III) under basic condition together with the subsequently modified St?ber
sol-gel technique. These nanoparticles were characterized by transmission
electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), fluorescence spectrum, dynamic light scattering
(DLS) and Zeta-potential.