Time-resolved fluorescence, particularly of millisecond lanthanide emission, is of considerable interest because of potentially increased sensitivity when short-lived autofluorescence is a problem. Lanthanides have also previously been shown to be excellent donors in resonance energy transfer measurements, where a lanthanide donor transfers energy to a conventional fluorophore. An instrument fo...

This paper describes a generic method for the site-specific attachment of lanthanide complexes to proteins through a disulfide bond. The method is demonstrated by the attachment of a lanthanide-binding peptide tag to the single cysteine residue present in the N-terminal DNA-binding domain of the Escherichia coli arginine repressor. Complexes with Y(3+), Tb(3+), Dy(3+), Ho(3+), Er(3+), Tm(3+) an...

Three new dinuclear lanthanide(III) complexes {Eu(hfac)(3)(H(2)O)}(2)(μ-HPhMq)(2) (2) and {Ln(hfac)(3)(H(2)O)}(2)(μ-HMe(2)NC(6)H(4)Mq)(2) (Ln = Eu, 3; Nd, 4) with 8-hydroxylquinoline derivatives in μ-phenol mode were synthesized and characterized, where hfac(-) = hexafluoroacetylacetonate, HPhMq = 2-methyl-5-phenylquinolin-8-ol, and HMe(2)C(6)H(4)Mq = 5-(4-(dimethylamino)phenyl)-2-methylquinoli...

Models and methods to determine the absolute binding energy of 4f -shell electrons in lanthanide dopants will be combined with data on the energy of electron transfer from the valence band to a lanthanide dopant. This work will show that it provides a powerful tool to determine the absolute binding energy of valence band electrons throughout the entire family of insulator and semiconductor comp...

The synthesis, structures and magnetic properties of a family of lanthanide complexes containing phosphonate ligands are reported. Reaction of hydrated lanthanide nitrate and (t)butylphosphonic acid under reflux conditions in iso-butanol, in the presence of pivalic acid as a co-ligand produced five new lanthanide complexes; pyridine (py) was present as a base. The compounds formed are tetrameta...

Growing interest in lanthanide-doped nanoparticles for biological and medical uses has brought particular attention to their safety concerns. However, the intrinsic toxicity of this new class of optical nanomaterials in biological systems has not been fully evaluated. In this work, we systematically evaluate the long-term cytotoxicity of lanthanide-doped nanoparticles (NaGdF4 and NaYF4) to HeLa...

Inhibition studies and co-localisation experiments with several emissive lanthanide complexes reveal cell uptake by macropinocytosis.

Superconductors are materials that conduct electricity with no resistance below its critical temperature (Tc). To date, pure metals, metal alloys, oxides, hydrides and super among structures have been reported to exhibit excellent superconducting properties due their unique electronic lattice structure. Most researchers widely on the fabrication, structure, applications of cuprate iron-based ma...

Many studies have described the determination of luminescence, radiotherapeutic applications, and development of chelators for lanthanide ions (Ln ) in the past several years. In the application of lanthanide ions for photometry, fluorometry and bioassay, the development of selective chelators and probes for lanthanide ions is important. The electronic configurations of lanthanide ions have 4f ...