A new luminescence-enhancement system based on complex formation between europium and sparfloxacin in the presence of lutetium in a sodium dodecyl sulfate solution has been discovered. By adding a suitable amount of Lu3+ to the Eu-sparfloxacin-sodium dodecyl sulfate system, the luminescence can be enhanced by approximately 5-fold compared with that of the system without Lu3+. Under the optimum ...

Matrix isolation techniques have been used in conjunction with Mossbauer spectroscopy to study europium atoms and clusters in solid argon. The measured isomer shift for Eu' monomers in argon was -6.1 mms-'. A value of 13 i: 2 lO-'fm* for the change in the mean square radius (A(?)) was calculated from the isomer shifts of Eu' and EuZ+S04. It was observed that the electron density at the lslEu nu...

We report on first-principles calculations of spin-dependent properties in graphene induced by its interaction with a nearby magnetic insulator (europium oxide, EuO). The magnetic proximity effect results in spin polarization of graphene π orbitals by up to 24%, together with a large exchange-splitting band gap of about 36 meV. The position of the Dirac cone is further shown to depend strongly ...

The structures of europium–EDTA (known lanthanide chelator) and europium–nicotianamine (biochemical precursor phytosiderophores) complexes are resolved, in solution, with ab initio molecular dynamics as well excitation emission spectroscopy.

A microfluidic immunoassay based on Europium nanoparticles has been developed for rapid and sensitive detection of HIV-1. The core polymer microfluidic device contains immunoreactors anchored with monoclonal capture antibodies highly specific to p24, the capsid protein of HIV-1. To report the capturing events, biotinylated secondary antibody followed by streptavidin-conjugated Europium nanopart...

A structural investigation of sub-15 nm xEu:BaTiO3 nanocrystals (x = 0-5 mol%) was conducted to determine the distribution of the Eu(3+) ion in the BaTiO3 lattice. Pair distribution function analysis of X-ray total scattering data (PDF), steady-state photoluminescence, and X-ray absorption spectroscopy (XANES/EXAFS) were employed to interrogate the crystal structure of the nanocrystals and the ...

The paper discussed the preparation of rare earth europium complexes ultraviolet rays (UV) photochromic ink and the influences of factors, such as europium complexes using a rare earth ternary complex of Eu ion with 3-benzoylbenzoic acid and phenathrolinephen [Eu(BA)3Phen] content upon printing ink formula. In the experiment, we utilized fluorescence spectrophotometer to make quantitative deter...

With a view to improving the sensitivity of serological detection of Aspergillus galactomannan (GM), a europium-linked time-resolved fluoroimmunoassay was developed. This method was compared to an enzyme-linked immunosorbent assay using a peroxidase-conjugated detector antibody. No increase in the sensitivity of the detection of GM standards was seen with the europium-based fluoroimmunoassay.

The synthesis of the first example of a new class of tetradentate reagents for the efficient separation of americium(III) and europium(III) is reported together with the structure of the complex formed with europium(III). 2004 Elsevier B.V. All rights reserved.

Self-assembly of a range of carboxylic acids (benzoic acid, dinicotinic acid, nicotinic acid, and isophthalic acid) with the europium complex of 5-nitro-α,α'-bis(DO3Ayl)-m-xylene (where DO3A is 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid) has been explored to establish the thermodynamics of binding in a range of solvent systems and in a range of aqueous buffer solutions. In this system,...