超细YF<sub>3</sub>与GdF<sub>3</sub>纳米晶的合成及其上转换发光

引用本文: 于锋, 黄周霞, 马蓦, 徐昌富, 林建国. 超细YF₃与GdF₃纳米晶的合成及其上转换发光[J]. 无机化学学报, 2014, 30(4): 805-810. doi: 10.11862/CJIC.2014.128 shu

Citation: YU Feng, HUANG Zhou-Xia, MA Mo, XU Chang-Fu, LIN Jian-Guo. Synthesis and Upconversion Luminescence of Ultrasmall YF₃ and GdF₃ Nanocrystallines[J]. Chinese Journal of Inorganic Chemistry, 2014, 30(4): 805-810. doi: 10.11862/CJIC.2014.128 shu

超细YF₃与GdF₃纳米晶的合成及其上转换发光

通讯作者: 徐昌富 xcf@xtu.edu.cn

基金项目:
国家自然科学基金(No.11274263)资助项目。 (No.11274263)

摘要: 当使用液固溶法(LSS法)制备分散性纳米晶时,将传统油酸/油酸钠/酒精反应体系中的NaOH用氨水取代时,氨水将会与油酸形成新的表面活性剂油酸铵,这样就可以合成各种超细分散性的REF₃纳米晶(RE代表稀土元素)。在这种新的反应体系中,合成了平均直径小于10nm的YF₃和GdF₃超细颗粒,X射线与透射电镜测试表明YF₃是正交相,而GdF₃是面心立方结构,空间群为Fm3m,晶格常数为0.5829nm。在980nm半导体激光器激发下,可检测到YF₃：Yb/Er在515~570nm处有较强的绿色发光峰、645~675nm处有较强的红色发光峰,呈橙色发光。YF₃：Yb/Tm和GdF₃：Yb/Tm样品在460~490nm处有较强的蓝色发光峰,而在800nm附近有更强的近红外发光峰。由于其超细的尺寸及红外上转换发光特性,合成的样品在生物成像、生物标签等方面有潜在的应用价值。

关键词:

YF₃/GdF₃超细纳米晶;LSS法;上转换

English

Synthesis and Upconversion Luminescence of Ultrasmall YF₃ and GdF₃ Nanocrystallines

1.
Institute of Material&Photoelectronic Physics, Xiangtan University, Xiangtan, Hunan, 411105, China

Corresponding author: 徐昌富 xcf@xtu.edu.cn

Received Date: 20 August 2013
Fund Project:
国家自然科学基金(No.11274263)资助项目。

Abstract: In liquid-solid-solution (LSS) method, when NaOH in the traditional oleic acid/sodium oleate/alcohol reaction system was replaced by ammonia, ammonia reacted with oleic acid, and then a new kind surfactant generated. So, this method can be used to synthesize monodispersed ultrasmall REF₃ nanocrystals. In this new reaction system, ultrasmall YF₃ and GdF₃ nanocrystals have been synthesized. X-ray diffraction (XRD) and transmission electron microscopy (TEM) assays revealed that the as-synthesized YF₃ was orthorhombic structure, but GdF₃ was face-centered cubic phase (S. G.: Fm3m, lattice constant: 0.5829 nm). Under the excitation of 980 nm diode laser, strong green photoluminescence at 515~570 nm and strong red emission at 645~675 nm of YF₃:Yb/Er were detected, so the luminescent color of YF₃:Yb/Er nanocrystals presented orange. Intense blue emission peaks at 460~490 nm from YF₃:Yb/Tm and GdF₃:Yb/Tm nanocrystals were detected, especially the stronger near-infrared photoluminescence peaks near 800 nm. For the ultrasmall size and its relative strong upconversion luminescence, the as-synthesized samples show potential applications in bioimaging, biolabels and etc.

Key words:

YF₃/GdF₃ ultrasmall nanocrystals;LSS method;upconversion

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

超细YF₃与GdF₃纳米晶的合成及其上转换发光

通讯作者: 徐昌富 xcf@xtu.edu.cn

English

Synthesis and Upconversion Luminescence of Ultrasmall YF₃ and GdF₃ Nanocrystallines

Corresponding author: 徐昌富 xcf@xtu.edu.cn

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Corresponding author: 徐昌富 xcf@xtu.edu.cn

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中国化学会秘书处

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CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs