A unique host-guest recognition process involving a new class of homoditopic CMPO-pillar[5]arenes and lanthanides was revealed to proceed in a stepwise manner, and correlated with the efficient separation of americium(III) and europium(III) under acidic feed conditions.

A luminescent probe for determination of pH was designed based on a Förster resonance energy transfer (FRET) system, combining a europium chelate as the donor and carboxynaphtho-fluorescein as a pH sensitive acceptor. The FRET system enables referenced pH detection in an exceptional broad dynamic range from pH 3 to 9.

In this paper, we have demonstrated that europium oxide (Eu(2)O(3)) is a new type of active catalyst for single-walled carbon nanotubes (SWNTs) growth under suitable conditions. Both random SWNT networks and horizontally aligned SWNT arrays are efficiently grown on silicon wafers. The density of the SWNT arrays can be altered by the CVD conditions. This result further provides the experimental ...

A new europium-based complex, K[Eu(hfa)4] with hfa = hexafluoroacetylacetonate is synthesized and its structure confirmed via X-ray crystallography. The unravels an anionic octa-coordinate K[Eu(hfa)4], as opposed to the neutral hexacoordinate complex Eu(hfa)3 routinely/ubiquitously presumed be case in literature. displayed pH-dependent, “on–off” emission changes solution exhibited a pKa of 6.13...

BACKGROUND The extreme specific activity of the long-lifetime fluorescent europium(III) chelate nanoparticles and the enhanced monovalent binding affinity of multivalent nanoparticle-antibody bioconjugates are attractive for noncompetitive immunoassay. METHODS We used a noncompetitive, two-step immunoassay design to measure free prostate-specific antigen (PSA). Europium(III) chelate nanoparti...

BACKGROUND Heterophilic antibodies are a common source of interference in immunometric assays. We tested the hypothesis that the incidence of such interference could be decreased by use of a recombinant in vivo-biotinylated single-chain antibody (scFv) as the capture reagent. METHODS We established three assays for carcinoembryonic antigen (CEA) with the capture antibody either chemically bio...

We show an example of a purely magnetic spin resonance in EuTiO(3) and the resulting new record high Faraday rotation of 590°/mm at 1.6 T for 1 cm wavelengths probed by a novel technique of magneto-optical gigahertz time-domain ellipsometry. From our transmission measurements of linear polarized light, we map out the complex index of refraction n=√ϵμ in the gigahertz to terahertz range. We obse...

In this work the growth and the characterization of red emitting triple-layer electroluminescent organic devices using vacuum deposited (Eu(TTA)3(TPPO)2) europium complex as emitting layer are described. The observed electroluminescence (EL) is characteristic of the Eu emission. In this device the hole transport layer is obtained using a thin lm of 1-(3-methylphenyl)1,2,3,4 tetrahydroquinoline-...

A new non-fluorinated malonamide-based ionic liquid extractant was synthesized and investigated for the extraction behavior of europium(III) and other trivalent rare-earth ions from nitric acid medium. The extractant was the functionalized ionic liquid trihexyl(tetradecyl)phosphonium N,N,N',N'-tetra(2-ethylhexyl)malonate, [P66614][MA], and it was used in combination with the non-fluorinated ion...

To unambiguously clarify the long-debated crystal structure of low-temperature orthoborate ?-YBO3, single-crystals europium-doped ?-YBO3:Eu3+ were prepared via a high-pressure/high-temperature route at 7.5 GPa and 1400 °C. The was solved refined in monoclinic space group C2/c (no. 15) pseudowollastonite type, with lattice parameters a=11.3407(5), b=6.5501(3), c=9.5798(4) Å, ?=113.08(2)°. This d...