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Citation: WU Yan-Li, XU Xian-Zhu, WEN Jia, XIAO Qiang, LI Yong-Xiu. Synthesis and Properties of Paramagnetic-Fluorescent Gd2(CO3)3:Eu@SiO2@APTES Core-Shell Structured Microspheres[J]. Chinese Journal of Inorganic Chemistry, ;2015, (6): 1125-1130. doi: 10.11862/CJIC.2015.154 shu

Synthesis and Properties of Paramagnetic-Fluorescent Gd2(CO3)3:Eu@SiO2@APTES Core-Shell Structured Microspheres

  • 1.

    1 Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China;

  • 2.

    2 College of Life Science, Jiangxi Normal University, Nanchang 330022, China;

  • 3.

    3 College of Chemistry, Nanchang Universtiy, Nanchang 330031, China

  • Corresponding author: LI Yong-Xiu, 
  • Received Date: 3 December 2014
    Available Online: 9 February 2015

    Fund Project: 江西省教育厅一般项目(No.GJJ14578,GJJ13216) (No.GJJ14578,GJJ13216)江西省科技支撑项目(No.20142BBF60008)资助。 (No.20142BBF60008)

  • Monodisperse core-shell structured Gd2(CO3)3:Eu@SiO2@APTES microsphere was successfully prepared via the stöber method by coating a layer of silica on the surface of Gd2(CO3)3:Eu microspheres which derived from a simple urea assisted coprecipitation method. Their structural, optical and magnetic properties were investigated using SEM, TEM, XRD, FTIR, PL, and MPMS. The results indicated that the microspheres with general 30 nm shell thickness and 150 nm core size has spherical morphology with smooth surface and narrow size distribution. The paramagnetic property of the synthesized Gd2(CO3)3:Eu@SiO2@APTES microspheres were confirmed with its linear hysteresis plot (M-H). The synthesized microspheres can enter into living cancer cells and emit orange-red luminescence light due to the 5D0→7F2 transition of the Eu3+ ions, and Gd2(CO3)3:Eu@SiO2@APTES microspheres showed no cell cytotoxicity or adverse affect on kidney cell growth under high dose up to 400 μg·mL-1. Therefore, Gd2(CO3)3:Eu@SiO2@APTES microspheres provides the dual modality of optical and magnetic resonance imaging.
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