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Showing 1 to 20 of 203 for “"Lanthanide"”.
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N-Ligand Stabilized Lanthanide Complexes
A series of lanthanide complexes stabilized by N-ligands has been synthesized. Most of these complexes have been structurally characterized. The overall results emphasize the importance of the steric bulk of the applied ligands to stabilize various lanthanide complexes with a distinct reactivity. …
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Structures of lanthanide-edta complexes
The structures of six lanthanide-edta complexes were elucidated by X-ray diffraction, so as to ascertain exactly at which point the change from the nine-coordinate [Ln(edta)(H₂O)₃ ]- complex to the eight-coordinate [Ln(edta)(H₂O)₂]-complex occurs. The transition was found to occur at Erbium. The …
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Lanthanide luminescence in Pybox functionalized metallopolymers
Lanthanide luminescence is woven into the fabric of modern day existence. Due to their narrow emission and useful red and green emission Eu(III) and Tb(III) have been extensively studied and applied as phosphors in a number of devices. It is in the pursuit of ever improving these devices' emission …
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The photophysics properties of lanthanide luminescent probes
… and the number of water molecules coordinated to lanthanide luminescent probes based on biphenylyl-7-amino-4- methyl-2(1H)-quinolinon (Bi-cs124) derivatives have been carried out using a time- resolved fluorescence assay (TRFA). Bi-cs124 was conbined with different chelating agents, specifically …
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FLUORINATED RESPONSIVE LANTHANIDE COMPLEXES FOR MAGNETIC RESONANCE
A series of novel fluorinated lanthanide complexes has been synthesised for use as responsive probes for 19F MRS and MRI. The careful positioning of the CF3 group within 6.5 Å from the metal ion caused the fluorine longitudinal and transversal relaxation rates to be strongly enhanced. This allows …
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Synthesis and crystal chemistry of lanthanide allanites
Metamictization and complex chemistry are major obstacles to the crystal chemical characterization of natural allanites. To overcome these problems, allanites, Ca(REE)Fe²+Al₂Si₃O₁₂(OH), where REE = La, La-Ce, Ce, Nd, Sm, Eu, Gd, Er, Dy, Yb and Y have been synthesized hydrothermally from unbuffered …
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Luminescent Lanthanide Complexes and Nanoparticles for Biological Applications
… and photocharacterization of new water-soluble lanthanide-based complexes and nanoparticles for potential use in biological environments. Trivalent lanthanide (Ln(III)) are attractive for bioimaging and sensing applications because of their long emission lifetimes, sharp emission bands, color …
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Lanthanide Functionalised gold nanoparticles as MRI contrast agents
… DTPA ligand can also chelate strongly with other lanthanides such as Eu3+, Tb3+etc. The luminescence measurements of lanthanides (Eu3+ and Tb3+) loaded onto AuNPs were explored. Lanthanide-loaded AuNPs were also used as model compounds to test an important EPR methodology after labelling with a …
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Recognition of Cations and Anions by Lanthanide Complexes
Transition metal cations and oxoanions are involved in many biological and environmental processes. Biologically, these ions have roles in aging and in the pathogenesis of a wide variety of disorders including neurodegenerative diseases such as Alzheimer’s and Parkinson’s, inflammation, reperfusion …
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Light conversion processes in lanthanide-based molecular materials
… processing of luminescent molecular complexes of lanthanide ions (Ln), for the development of efficient near infrared (NIR)-emitting materials. In the light of a detailed understanding of the chemical/photophysical properties of the special class of lanthanide quinolinolato complexes, as prototype …
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Lanthanide Supramolecular Phosphate Receptors for Environmental and Medical Applications
… and stability in complex aqueous media. Lanthanide complexes, however, are well-suited to meet all of the requirements for phosphate removal from water. Their high coordination number and coordination chemistry allow for stable complexes with open sites to bind phosphate, and their Lewis …
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Low-dimensional and frustrated magnetism in complex lanthanide oxides
… the structural and magnetic behaviour of complex lanthanide oxides exhibiting low-dimensional and/or geometrically frustrated magnetism. Materials displaying these phenomena are well studied as hosts for novel magnetic states such as spin liquids, and for applications such as magnetic …
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Synthesis and characterization of lanthanide fluorides for forensic neutron detection
Lanthanide fluorides have many uses, and there is a need for high quality nanocrystals to fill this need. Here, the synthesis and characterization of high quality lanthanide fluorides is presented. In particular, this dissertation focuses on dysprosium fluoride doped with ytterbium, to eventually …
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Novel Luminescent Lanthanide Complexes as Reporters of Cellular Oxidative Stress
A series of lanthanide complexes based on asymmetrically substituted cyclen ligands were designed and synthesised in this project in order to develop ROS-responsive luminescent molecular sensors. A synthetic strategy involving the synthesis of an intermediate ligand was applied to the …
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Synthesis and characterisation of lanthanide and other inorganic framework materials
… framework structures.<br/><br/>Hexagonal lanthanide phosphates (LnIIIPO4.nH2O) with the mineral Rhabdophane structure type were synthesised through hydrothermal techniques and analysed upon heating where a distinct increase in the a-axis lattice length was observed upon dehydration of the …
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