CePO4:Ln (Ln = Tb3+ and Dy3+) nanoleaves incorporated in silica sols

Gulnar, A. K., Sudarsan, V., Vatsa, R. K., Hubli, R. C., Gautam, U. K., Vinu, A. and Tyagi, A. K. (2009) CePO4:Ln (Ln = Tb3+ and Dy3+) nanoleaves incorporated in silica sols. Crystal Growth & Design, 9 5: 2451-2456. doi:10.1021/cg801349y


Author Gulnar, A. K.
Sudarsan, V.
Vatsa, R. K.
Hubli, R. C.
Gautam, U. K.
Vinu, A.
Tyagi, A. K.
Title CePO4:Ln (Ln = Tb3+ and Dy3+) nanoleaves incorporated in silica sols
Journal name Crystal Growth & Design   Check publisher's open access policy
ISSN 1528-7483
1528-7505
Publication date 2009-05
Sub-type Article (original research)
DOI 10.1021/cg801349y
Volume 9
Issue 5
Start page 2451
End page 2456
Total pages 6
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
Highly crystalline CePO 4, CePO 4:Tb 3+, and CePO 4:Dy 3+ nanoleaves with monoclinic structure and dispersible in solvents such as water and methanol were prepared by a low temperature synthesis. Subsequently, these nanoleaves were incorporated into silica sols by the sol-gel method. Such nanoleaves incorporated into silica sols exhibit improved luminescence properties compared to silica sols directly doped with lanthanide ions. The observed difference in the luminescent properties of nanoleaves incorporated into silica sols and silica sols directly incorporated with lanthanide ions has been explained based on the different extent of energy transfer from Ce 3+ to Tb 3+/Dy 3+ ions. The different extent of quenching of the excited-state of lanthanide ions due to OH groups from Si-OH linkages and water molecules, taking place in nanoleaves incorporated into silica sols compared to silica sols directly doped with lanthanide ions, is also responsible for the improvement in the luminescence properties. The present study will be quite relevant for developing biosensors for studying enzyme and protein activities based on luminescent silica sols.
Keyword Nanoparticles
Nanocrystals
Nanowires
Photoluminescence
Luminescence
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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