Colloidal synthesis and remarkable enhancement of the upconversion luminescence of BaGdF5:Yb3+/Er3+ nanoparticles by active-shell modification

被引：185

作者：

Yang, Dongmei ^{[1
,2
]}

Li, Chunxia ^{[1
]}

Li, Guogang ^{[1
,2
]}

Shang, Mengmeng ^{[1
,2
]}

Kang, Xiaojiao ^{[1
,2
]}

Lin, Jun ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat Changc, Changchun 13002, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 16期

基金：

中国国家自然科学基金;

关键词：

NANOCRYSTALS; GREEN; BLUE; STRATEGY; RED;

D O I：

10.1039/c0jm04179c

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：

BaGdF5:Yb3+/Er3+ colloidal nanoparticles (NPs) with tunable average particle diameters from 3 to 10 nm in different solvents were first prepared by thermal decomposition method. X-Ray diffraction (XRD), transmission electron microscopy (TEM) and upconversion (UC) luminescence spectra were used to characterize the resulting samples. After coating the active shell (containing Yb3+) around the BaGdF5:Yb3+/Er3+ NPs, not only their morphology and monodisperse properties were well maintained but also the relative UC luminescence intensity was enhanced remarkably. In contrast to the pure BaGdF5:Yb3+/Er3+ core, the luminescence intensity of the active-shell coated NPs can be enhanced several hundred times. Unexpectedly, the luminescence intensity of the active-core/active-shell NPs was about four times as high as that of beta-NaYF4:Yb3+/Er3+ NPs under the same doping concentration and measurement conditions. Moreover, the luminescence colors of the active-core/active-shell NPs can be tuned from green to yellow by multilayer active-shell coating under 980 nm laser excitation.

引用

页码：5923 / 5927

页数：5

共 28 条

[1] Absolute quantum yield measurements of colloidal NaYF4: Er3+, Yb3+ upconverting nanoparticles [J].

Boyer, John-Christopher ;

van Veggel, Frank C. J. M. .

NANOSCALE, 2010, 2 (08) :1417-1419

[2] Versatile synthesis strategy for carboxylic acid-functionalized upconverting nanophosphors as biological labels [J].

Chen, Zhigang ;

Chen, Huili ;

Hu, He ;

Yu, Mengxiao ;

Li, Fuyou ;

Zhang, Qiang ;

Zhou, Zhiguo ;

Yi, Tao ;

Huang, Chunhui .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (10) :3023-3029

[3] Blue, green, and red upconversion emission from lanthanide-doped LuPO4 and YbPO4 nanocrystals in a transparent colloidal solution [J].

Heer, S ;

Lehmann, O ;

Haase, M ;

Güdel, HU .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (27) :3179-3182

[4] Upconverting luminescent nanomaterials: application to in vivo bioimaging [J].

Hilderbrand, Scott A. ;

Shao, Fangwei ;

Salthouse, Christopher ;

Mahmood, Umar ;

Weissleder, Ralph .

CHEMICAL COMMUNICATIONS, 2009, (28) :4188-4190

[5] Coating Colloidal Carbon Spheres with CdS Nanoparticles: Microwave-Assisted Synthesis and Enhanced Photocatalytic Activity [J].

Hu, Yong ;

Liu, Yu ;

Qian, Haisheng ;

Li, Zhengquan ;

Chen, Jiafu .

LANGMUIR, 2010, 26 (23) :18570-18575

[6] Hydrothermal Synthesis and Luminescence of Eu-Doped Ba0.92Y2.15F8.29 Submicrospheres [J].

Huang, Yeju ;

You, Hongpeng ;

Jia, Guang ;

Zheng, Yuhua ;

Song, Yanhua ;

Yang, Mei ;

Liu, Kai ;

Zhang, Lihui .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (39) :16962-16968

[7] Hexagonal sodium yttrium fluoride based green and blue emitting upconversion phosphors [J].

Krämer, KW ;

Biner, D ;

Frei, G ;

Güdel, HU ;

Hehlen, MP ;

Lüthi, SR .

CHEMISTRY OF MATERIALS, 2004, 16 (07) :1244-1251

[8] Combined Optical and MR Bioimaging Using Rare Earth Ion Doped NaYF4 Nanocrystals [J].

Kumar, Rajiv ;

Nyk, Marcin ;

Ohulchanskyy, Tymish Y. ;

Flask, Christopher A. ;

Prasad, Paras N. .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (06) :853-859

[9] Efficient luminescence from rare-earth fluoride nanoparticles with optically functional shells [J].

Lezhnina, Marina M. ;

Justel, Thomas ;

Katker, Heike ;

Wiechert, Detlef U. ;

Kynast, Ulrich H. .

ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (07) :935-942

[10] Rare earth fluoride nano-/microcrystals: synthesis, surface modification and application [J].

Li, Chunxia ;

Lin, Jun .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (33) :6831-6847

← 1 2 3 →