The photoluminescence of Ca(2)SiS(4):Eu powders was investigated in detail as a function of europium concentration (from 0.1% Ca substitution to the fully substituted Eu(2)SiS(4)). At low europium dopant concentration (<10%) the powders crystallize in an orthorhombic structure and the emission spectrum is dominated by two broad emission bands, at 564 and 660 nm. The emission can be tuned from y...

Multilayer films consisting of Eu(OH)(3-x) and titanium oxide nanosheets showed strong Eu(3+) emission under UV-light irradiation, in which the titanium oxide nanosheet works as an antenna collecting UV-light, and then the Eu(OH)(3-x) nanosheet acts as an emitting layer receiving the absorbed energy.

Giorgio Concas , Giorg io Spano, Marz ia Carrada, Marco Bettinelli , and Ado l fo Speghini 3 Dipartimento di Fisiea, Universita di Cagliari and Istituto Nazionale per la Fisica della Materia, S.P. Monserrato-Sestu km 0,700, 1-09042 Monserrato (Cagliari), Italy 3 Dipartimento Scientifico e Tecnologico, Universita di Verona, Ca' Vignal, Strada le Grazie, 1-37134 Verona, Italy Reprint requests to ...

In this first exploration of europium-doped carbonated apatites the location carbonate was determined using environment model for analysis IR and NMR spectra. Europium-doped apatites, containing Eu/(Eu + Ca) mole ratios about 10%, were prepared by aqueous one-step addition syntheses. The spectra in samples are described model: A-type is assigned to channels only calcium ions (A = Ca6) or one Na...

Luminescent carbon-based materials have been prepared by electrostatic self-assembly of negatively-charged luminescent Eu(III)-complex with imidazolium-functionalized MWCNTs.

The first Eu(3+) chelate-based luminescent probe specific for nitric oxide (NO) has been designed and synthesized for highly sensitive and selective time-gated luminescence detection of NO. Based on the probe, a time-gated luminescence imaging technique was developed for imaging the endogenous NO production in living plant cells/tissues.

BACKGROUND Despite their ease of use, lateral flow immunoassays (LFIAs) often suffer from poor quantitative discrimination and low analytical sensitivity. We explored the use of a novel class of europium chelate-loaded silica nanoparticles as labels to overcome these limitations. METHODS Antibodies were covalently conjugated onto europium chelate-loaded silica nanoparticles with dextran as a ...

Single-crystalline Y(OH)3:Eu nanowires have been prepared by polymer-assisted hydrothermal method. The yields of the nanowires were higher than 95%. XRD patterns showed that the products were the hexagonal Y(OH)3 structure. SEM images displayed that the nanowires consisted of nanobelts and nanorods. The nanorods have the diameter of about 85 nm and length up to several tens of microns, and the ...

Ratiometric methods of analysis have been developed for the selective determination of lactate or citrate in microlitre samples of human serum, urine or prostate fluids following comparison of anion binding affinities for a family of nine luminescent europium(III) complexes.