title: Ultra small Gd(2)O(3) nanoparticles: Absorption and emission properties.
abstract: In this paper, we report a facile method for synthesis of ultra small (1-3nm) gadolinium oxide (Gd(2)O(3)) nanoparticles using citric acid (CA) as a capping agent. The dependence of nanoparticle (NP) size on the ratio between CA and gadolinium (Gd) is investigated. Absorption properties of the ultra small Gd(2)O(3) NPs in UV region have four characteristic peaks at 312nm, 274nm, 253nm and 228nm. Finally, we show that the Gd(2)O(3) nanoparticles synthesized by this method induce triplet emission (phosphorescence) from CA and EG in the NIR region.
authors.affiliation: School of AME and Mawson Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA-5095, Australia. Anishur.Rahman@postgrads.unisa.edu.au
authors.forename: A T M
authors.initials: AT
authors.lastname: Anishur Rahman
authors.forename: Krasimir
authors.initials: K
authors.lastname: Vasilev
authors.forename: Peter
authors.initials: P
authors.lastname: Majewski