Re-dispersion and film formation of GdVO4: Ln(3+) (Ln(3+) = Dy3+, Eu3+, Sm3+, Tm3+) nanoparticles: particle size and luminescence studies

Singh, N. Shanta, Ningthoujam, R. S., Phaomei, Ganngam, Singh, S. Dorendrajit, Vinu, A. and Vatsa, R. K. (2012) Re-dispersion and film formation of GdVO4: Ln(3+) (Ln(3+) = Dy3+, Eu3+, Sm3+, Tm3+) nanoparticles: particle size and luminescence studies. Dalton Transactions, 41 15: 4404-4412. doi:10.1039/c2dt12190e

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Author Singh, N. Shanta
Ningthoujam, R. S.
Phaomei, Ganngam
Singh, S. Dorendrajit
Vinu, A.
Vatsa, R. K.
Title Re-dispersion and film formation of GdVO4: Ln(3+) (Ln(3+) = Dy3+, Eu3+, Sm3+, Tm3+) nanoparticles: particle size and luminescence studies
Formatted title
Re-dispersion and film formation of GdVO4: Ln3+ (Ln3+ = Dy3+, Eu3+, Sm3+, Tm3+) nanoparticles: particle size and luminescence studies
Journal name Dalton Transactions   Check publisher's open access policy
ISSN 1477-9226
1477-9234
Publication date 2012-04-21
Sub-type Article (original research)
DOI 10.1039/c2dt12190e
Open Access Status File (Publisher version)
Volume 41
Issue 15
Start page 4404
End page 4412
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher RSC Publications
Language eng
Formatted abstract
GdVO4 : Ln3+ (Ln3+ = Dy3+, Eu3+, Sm3+, Tm3+) nanoparticles are prepared by a simple chemical route at 140 °C. The crystallite size can be tuned by varying the pH of the reaction medium. Interestingly, the crystallite size is found to increase significantly when pH increases from 6 to 12. This is related to slower nucleation of the GdVO4 formation with increase of VO43− present in solution. The luminescence study shows an efficient energy transfer from vanadate absorption of GdVO4 to Ln3+ and thereby enhanced emissions are obtained. A possible reaction mechanism at different pH values is suggested in this study. As-prepared samples are well dispersed in ethanol, methanol and water, and can be incorporated into polymer films. Luminescence and its decay lifetime studies confirm the decrease in non-radiative transition probability with the increase of heat treatment temperature. Re-dispersed particles will be useful
in potential applications of life science and the film will be useful in display devices.
Keyword Photoluminescence properties
Hydrothermal synthesis
Aqueous solutions
Quantum yield
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

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