Citric Acid-Assisted Hydrothermal Synthesis of Luminescent TbPO(4):Eu Nanocrystals: Controlled Morphology and Tunable Emission
authors Di, WH; Willinger, MG; Ferreira, RAS; Ren, XG; Lu, SZ; Pinna, N
nationality International
journal JOURNAL OF PHYSICAL CHEMISTRY C
keywords SHAPE-CONTROLLED SYNTHESIS; LIQUID-PHASE SYNTHESIS; IONIC LIQUIDS; LAPO4-CE,TB NANOCRYSTALS; SILVER NANOPARTICLES; QUANTUM DOTS; NANOSTRUCTURES; PARTICLES; NANORODS; SURFACE
abstract This work reports a simple hydrothermal route using citric acid as a "shape modifier" for the controlled synthesis of luminescent TbPO(4):Eu nanocrystals. The size and morphology of products change remarkably when the proportion of citric acid involved in the reaction increases. The multiple roles that citric acid plays during the controlled synthesis are discussed to try to understand the crystallization and growth dynamics of TbPO(4) crystals. The photoluminescence properties of TbPO(4):Eu are investigated. The excitation spectra and the variation of the (5)D(4) lifetime values as a function of the Eu(3+) concentration points out the occurrence of Tb(3+)-to-EU(3+) energy transfer, resulting in a maximum absolute emission quantum yield of 0.14. The possibility to tune the size, the shape, and the optical properties of the nanocrystals reported in this work might be useful for applications in optoelectronics or biolabeling. Moreover, this simple approach might also be applied for the synthesis of other luminescent phosphates.
publisher AMER CHEMICAL SOC
issn 1932-7447
year published 2008
volume 112
issue 48
beginning page 18815
ending page 18820
digital object identifier (doi) 10.1021/jp807527y
web of science category Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000261218400018
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