title: One-pot solvothermal synthesis of uniform layer-by-layer self-assembled ultrathin hexagonal Gd2O2S nanoplates and luminescent properties from single doped Eu3+ and codoped Er3+, Yb3+.
abstract: Uniform Gd(2)O(2)S flower-like nano-assemblies were prepared through one-pot mild solvothermal synthesis. The parallel nanoplates are the building blocks, ∼3 nm in thickness and 20-30 in diameter. Ethanediamine, the main solvent, plays an important role in dissolving a large amount of sulphur and producing active S(2-) ions, which results in the direct formation of Gd(2)O(2)S. Oleylamine, the capping agent, controls the growth of the plate-like structure. Under UV excitation, the Gd(2)O(2)S:Eu(3+) nano-phosphor shows good red luminescence with a main emission peak at 627 nm. Under 980 nm laser excitation, Gd(2)O(2)S:xYb(3+),1%Er(3+) nano-phosphors exhibit a tuneable emission, shifting from greenish-yellow to orange-yellow, with increasing Yb(3+) content.
authors.affiliation: Department of Chemistry, Shanghai Normal University, People's Republic of China.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.forename: Hongde
authors.initials: H
authors.lastname: Luo
authors.forename: Pujun
authors.initials: P
authors.lastname: Liu
authors.forename: Lixian
authors.initials: L
authors.lastname: Han
authors.forename: Xiao
authors.initials: X
authors.lastname: Zheng
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.forename: Xibin
authors.initials: X
authors.lastname: Yu
mesh_terms: D004871:Erbium / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D049449:Luminescence; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D012995:Solubility; D013499:Surface Properties; D013696:Temperature; D015018:Ytterbium / Q000737:chemistry*
chemical_list: C021197:gadolinium sulfoxylate; D005063:Europium; D004871:Erbium; D005682:Gadolinium; D015018:Ytterbium