A Facile Approach to Fabrication of Hexagonal-Phase NaYF4:Yb3+, Er3+ Hollow Nanospheres: Formation Mechanism and Upconversion Luminescence

被引：38

作者：

Zhao, Junwei ^{[1
,2
,3
]}

Liu, Xiaomin ^{[1
]}

Cui, Di ^{[4
]}

Sun, Yajuan ^{[1
]}

Yu, Yi ^{[1
]}

Yang, Yifei ^{[1
]}

Du, Chuang ^{[1
]}

Wang, Yu ^{[1
,2
,3
]}

Song, Kai ^{[1
]}

Liu, Kai ^{[1
,2
,3
]}

Lu, Shaozhe ^{[1
]}

Kong, Xianggui ^{[1
]}

Zhang, Hong ^{[3
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1018 WV Amsterdam, Netherlands

[4] Wuhan Univ, Coll Chem, Wuhan 430072, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 12期

基金：

中国国家自然科学基金;

关键词：

Hydrothermal synthesis; Rare earths; Crystal growth; Polymers; Luminescence; Ostwald ripening; ONE-POT SYNTHESIS; CORE-SHELL; PHOTOCATALYTIC ACTIVITY; TIO2; NANOSPHERES; IN-VIVO; NANOCRYSTALS; SPHERES; CRYSTALLIZATION; NANOSTRUCTURES; NANOPARTICLES;

D O I：

10.1002/ejic.200901119

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The hexagonal-phase NaYF4:Yb3+, Er3+ hollow nanospheres (HNS) have been successfully prepared for the first time by means of a hydrothermal route with the aid of polyethylenimine (PEI) as a surfactant. The nitrogen adsorption/desorption isotherms demonstrated the porous nature of the NaYF4 HNS. The formation mechanism was explored based on the effects of the reaction parameters. The NaYF4 solid spheres underwent a dissolution-recrystallisation transformation and a hollowing process when the hydrothermal reaction time was prolonged. The localised Ostwald ripening mechanism was proposed to account for the formation of NaYF4 HNS, in which loose aggregations were found to be crucial. The upconversion luminescence of NaYF4:Yb3+, Er3+ HNS was also investigated. It is expected that these NaYF4 FINS might have potential in applications as building blocks for biolabels and drug-delivery.

引用

页码：1813 / 1819

页数：7

共 61 条

[1] Upconversion and anti-stokes processes with f and d ions in solids [J].

Auzel, F .

CHEMICAL REVIEWS, 2004, 104 (01) :139-173

[2] Facile synthesis of hollow nickel submicrometer spheres [J].

Bao, JC ;

Liang, YY ;

Xu, Z ;

Si, L .

ADVANCED MATERIALS, 2003, 15 (21) :1832-1835

[3] Nanoengineering of inorganic and hybrid hollow spheres by colloidal templating [J].

Caruso, F ;

Caruso, RA ;

Möhwald, H .

SCIENCE, 1998, 282 (5391) :1111-1114

[4] Formation of colloidal CuO nanocrystallites and their spherical aggregation and reductive transformation to hollow CU2O nanospheres [J].

Chang, Y ;

Teo, JJ ;

Zeng, HC .

LANGMUIR, 2005, 21 (03) :1074-1079

[5] Higher-order organization by mesoscale self-assembly and transformation of hybrid nanostructures [J].

Cölfen, H ;

Mann, S .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (21) :2350-2365

[6] Mesocrystals:: Inorganic superstructures made by highly parallel crystallization and controlled alignment [J].

Cölfen, H ;

Antonietti, M .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (35) :5576-5591

[7] Magnetic-dipolar-interaction-induced self-assembly affords wires of hollow nanocrystals of cobalt selenide [J].

Gao, JH ;

Zhang, B ;

Zhang, XX ;

Xu, B .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (08) :1220-1223

[8] Facile route to Zn-based II-VI semiconductor spheres, hollow spheres, and core/shell nanocrystals and their optical properties [J].

Geng, Jun ;

Liu, Bo ;

Xu, Lang ;

Hu, Fang-Neng ;

Zhu, Jun-Jie .

LANGMUIR, 2007, 23 (20) :10286-10293

[9] Energy transfer processes in Er3+-doped and Er3+,Pr3+-codoped ZBLAN glasses [J].

Golding, PS ;

Jackson, SD ;

King, TA ;

Pollnau, M .

PHYSICAL REVIEW B, 2000, 62 (02) :856-864

[10] Highly efficient multicolour upconversion emission in transparent colloids of lanthanide-doped NaYF4 nanocrystals [J].

Heer, S ;

Kömpe, K ;

Güdel, HU ;

Haase, M .

ADVANCED MATERIALS, 2004, 16 (23-24) :2102-+

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