Facile Synthesis of Multifunctional β-NaGdF4:Yb3+/Er3+ Nanoparticles in Oleylamine

被引：4

作者：

Cheng, Qian ^{[1
,2
]}

Sui, Jiehe ^{[1
]}

Li, Yu ^{[3
]}

Zhou, Ziqiao ^{[1
]}

Cai, Wei ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Northeast Forestry Univ, Sch Mat Sci & Engn, Harbin 150040, Peoples R China

[3] Northeast Forestry Univ, Coll Sci, Harbin 150040, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Multifunctional Nanoparticles; Luminescence; Magnetic Materials;

D O I：

10.1166/jnn.2013.6891

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multifunctional beta-NaGdF4:Yb3+/Er3+ nanoparticles (NPs) were successfully synthesized using oleylamine as both solvent and stabilizer via the thermolysis method. They have uniform morphology with a mean size of 12.7 nm and show efficient up-conversion emission when excited by a 980 nm laser. The up-conversion NPs demonstrated a nearly quadratic dependence of the photoluminescence intensity on the excitation power, which indicated a two-photon induced process. In addition, these NPs exhibit paramagnetic characteristics at both 300 and 77 K. The magnetic properties of beta-NaGdF4:Yb3+/Er3+ NPs are intrinsic to the Gd3+ ions. The measured mass magnetic susceptibility value of 0.79 x 10(-4) em mu/g.Oe at room temperature is close to reported values of other NPs for bioseparation and optical-magnetic dual modal nanoprobes in biomedical imaging.

引用

页码：529 / 532

页数：4

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