1. Water-Soluble, Monodisperse, Lanthanide-Doped Y(Gd)VO4 Nanocrystals as Promising Multimodal Bioprobe.
- Author
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Chen, Cailing, Li, Chunguang, Li, Tao, Liu, Jianhua, Huang, He, Bai, Tianyu, Wang, Zhaorui, Shi, Zhan, and Feng, Shouhua
- Subjects
HYDROTHERMAL synthesis ,NANOSTRUCTURES ,BIOSENSOR research ,LUMINESCENCE ,VANADATES ,RARE earth metals - Abstract
Monodisperse and water-soluble lanthanide (Ln
3+ )-doped Y(Gd)VO4 nanocrystals (NCs) have been successfully synthesized by a fast, facile, and environmentally friendly microwave-assisted route with poly(acrylic acid) as the surfactant. The Y(Gd)VO4 :5 %Ln3+ (Ln = Eu, Dy, Sm) NCs have unique fluorescence properties and polydimethylsiloxane (PDMS)-based white solid nanocomposites containing YVO4 :5 %Eu3+ NCs show red emission upon UV irradiation. GdVO4 NCs can act as CT and MRI contrast agents as a result of their magnetic and X-ray absorption properties. A layer of SiO2 was coated onto the surfaces of the nanoparticles and MTT assays were carried out to test the cytotoxicity of the YVO4 @SiO2 and GdVO4 NCs. The results indicate that the Y(Gd)VO4 NCs have potential in multimodal optical/MRI/CT bio-imaging. [ABSTRACT FROM AUTHOR]- Published
- 2015
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