Synthesis of multifunctional microspheres having polymer brush with magnetism, fluorescence, and pH-responsiveness

被引:4
|
作者
Liu, Tuanwei [1 ]
Liu, Bin [1 ]
Fu, Xiaomeng [1 ]
Sun, Shuxuan [1 ]
Liu, Wei [2 ]
Bian, Guomin [3 ]
Qi, Yonglin [3 ]
Yang, Xinlin [1 ]
机构
[1] Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Inst Polymer Chem, Key Lab Funct Polymer Mat,Minist Educ, Tianjin 300071, Peoples R China
[2] Tianjin Polytech Univ, Sch Environm & Chem Engn, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300387, Peoples R China
[3] Dynea Ltd Co, Gaoyao City 526105, Guangdong, Peoples R China
关键词
Magnetic nanoparticles; Fluorescent nanoparticles; Surface-initiated ATRP; pH-responsive nanoparticles; IRON-OXIDE NANOPARTICLES; CORE; RELEASE; DRUG;
D O I
10.1007/s00396-014-3469-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Multifunctional 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 Stober 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 potentials.
引用
收藏
页码:809 / 816
页数:8
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