An Electron Paramagnetic Resonance Spectroscopic Investigation on the Growth Mechanism of NaYF4:Gd Nanocrystals

被引：49
作者：
Komban, Rajesh [1 ]
Klare, Johann P. [2 ]
Voss, Benjamin [1 ]
Nordmann, Joerg
Steinhoff, Heinz-Juergen [2 ]
Haase, Markus [1 ]
机构：
[1] Univ Osnabruck, Inst Chem, D-49076 Osnabruck, Germany
[2] Univ Osnabruck, Inst Phys, D-49076 Osnabruck, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2012年 / 51卷 / 26期
关键词：
core-shell heterostructures; EPR spectroscopy; growth mechanism; nanoparticle; upconversion; UP-CONVERSION NANOPARTICLES; ORIENTED ATTACHMENT; CRYSTAL-GROWTH; HOT-INJECTION; QUANTUM DOTS; SIZE; MESOCRYSTALS; MONODISPERSE; PHASE; CRYSTALLIZATION;
D O I：
10.1002/anie.201201025
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Doped nanocrystals of NaYF 4 and NaGdF 4 are currently studied as upconversion luminescence markers and magnetic resonance imaging contrast agents. An EPR investigation on the growth mechanism of NaYF 4:Gd and NaGdF 4 nanocrystals showed that these nanomaterials grow in the standard oleic acid-based reaction medium by a dissolution/recrystallization mechanism and not by the aggregation or oriented attachment of smaller particles. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：6506 / 6510
页数：5
相关论文
共 98 条
[1]   Analysis of the Shell Thickness Distribution on NaYF4/NaGdF4 Core/Shell Nanocrystals by EELS and EDS [J].
Abel, Keith A. ;
Boyer, John-Christopher ;
Andrei, Carmen M. ;
van Veggel, Frank C. J. M. .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2011, 2 (03) :185-189
[2]   Hard Proof of the NaYF4/NaGdF4 Nanocrystal Core/Shell Structure [J].
Abel, Keith A. ;
Boyer, John-Christopher ;
van Veggel, Frank C. J. M. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (41) :14644-+
[3]  
[Anonymous], 2007, ANGEW CHEMIE, DOI [10.1002/ange.200603148, DOI 10.1002/ANGE.200603148]
[4]  
[Anonymous], 2011, ANGEW CHEM
[5]  
[Anonymous], 2005, ANGEW CHEM
[6]  
[Anonymous], ANGEW CHEM, DOI DOI 10.1002/1521-3757(20020402)114:7<LESS
[7]   Aggregation-based crystal growth and microstructure development in natural iron oxyhydroxide biomineralization products [J].
Banfield, JF ;
Welch, SA ;
Zhang, HZ ;
Ebert, TT ;
Penn, RL .
SCIENCE, 2000, 289 (5480) :751-754
[8]  
Barbara PF, 1999, ACCOUNTS CHEM RES, V32, P387
[9]   THE ELECTRON-PARAMAGNETIC-RES SPECTRA OF GD-3+ AND EU-2+ IN GLASSY SYSTEMS [J].
BRODBECK, CM ;
ITON, LE .
JOURNAL OF CHEMICAL PHYSICS, 1985, 83 (09) :4285-4299
[10]   Improved Current Extraction from ZnO/PbS Quantum Dot Heterojunction Photovoltaics Using a MoO3 Interfacial Layer [J].
Brown, Patrick R. ;
Lunt, Richard R. ;
Zhao, Ni ;
Osedach, Timothy P. ;
Wanger, Darcy D. ;
Chang, Liang-Yi ;
Bawendi, Moungi G. ;
Bulovic, Vladimir .
NANO LETTERS, 2011, 11 (07) :2955-2961
12345678910