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Highly bright multicolour emission through energy migration in core/shell nanotubes.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 4/14/2015, Vol. 44 Issue 14, p6645-6654. 10p. - Publication Year :
- 2015
-
Abstract
- This paper describes a simple and environmentally-friendly approach that allowed for the facile synthesis of a gadolinium-based core/shell/shell nanotube structure with a set of lanthanide ions incorporated into separated layers. In addition, by the rational design of a core/shell structure we systematically investigated the luminescence properties of different lanthanide ions in NaGdF4 host, and efficient down-conversion emission can be realized through gadolinium sublattice-mediated energy migration. The Gd3+ ions play an intermediate role in this process. By changing the doped lanthanide ions, we generated multicolour emissions from the luminescent Ln3+ centers via energy transfer of Ce3+→Gd3+→Ln3+ and Ce3+→Ln3+ (Ln = Eu, Tb, Dy and Sm) in separated layers. Due to the strong absorption of ultraviolet (UV) irradiation by Ce3+ ions, the luminescence efficiency could be enhanced after doping Ce3+ ions in the shell. In NaGdF4:5% Eu3+@NaGdF4@NaGdF4:5% Ce3+ core/shell/shell nanotubes, with increasing the NaGdF4 interlayer thickness, a gradual decrease in emission intensity was observed for the Eu3+ activator. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 44
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 101754087
- Full Text :
- https://doi.org/10.1039/c5dt00581g