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Showing 1 to 13 of 13 for “"LN3"”.
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Use Of 17o-Nmr Spectroscopy To Study The Coordination Chemistry Of Trivalent Lanthanide Ions In Solution
<p>Trivalent lanthanide (Ln3+)-containing complexes have a number of important applications in molecular imaging, catalysis, medical diagnosis, information storage, and environmental sensing. The properties of Ln3+-containing complexes that are useful for these applications are influenced by …
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Chemically Modified Titanium-Oxo Clusters as Molecular Materials
… of the influence of the paramagnetic Ln3+ ions on the NMR behaviour of the 1H and 13C nuclei in the peripheral ligands. Compared to conventional Ln3+-complexes, the ligands in these clusters are separated from the Ln3+ ions by oxo-Ti4+ linkages, and therefore experience a weaker …
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Development of lanthanide-binding tags (LBTs) as powerful and versatile peptides for use in studies of proteins and protein interactions
… handle, and trivalent lanthanide ions (Ln3+) are protean in this regard: an ordered Ln3+ can have many uses. Paramagnetic lanthanide ions can be exploited to align biomolecules in a magnetic field, and the anomalous signal of any lanthanide ion may be used to obtain phase information …
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Complexos luminescentes de íons lantanídeos trivalentes ligados covalentemente à superfície da sílica gel.
… properties of lanthanide ion complexes Ln3+ (Ln = Eu, Tb or Gd) with diethylenetriaminepentaacetic ligand (DTPA) covalently bonded to the silica gel surface modified with N-(3-trimethosysilylpropyl)diethylenetriamine (3N) and -diketonates ligands such as 2-thenoyltrifluroacetonate …
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Design, Synthesis and Application of Cylindrical Polymer Brushes: From Nanostructures to Advanced Materials
… preparation of various rare-earth metal cations (Ln3+) incorporated silica hybrid nanoparticles (NPs). A tight chelation of Ln3+ ions in the PAA core and a crosslinked silica layer deposited on the shell provide a very stable encapsulation of Ln3+ ions within the hybrid NPs and thus a high …
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Towards Multifunctional Materials based on Coordination Complexes of Sulfur-Containing Diarylazo and Cucurbit[6]uril Ligands
… and isonicotinate together with suitable Ln3+ salts. A family of complexes with two structural topologies were isolated; [Gd4(µ3-OH)4(µ2-OH)4] (8a) and [Ln4(μ3- OH)4(μ2-OH)(µ2-IN)] (where Ln3+= Dy or Tb; 8b, 8c). The complexes were structurally and magnetically characterized. Structural …
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Spektroskopische Untersuchungen (TRLFS und XAFS) zur Wechselwirkung von dreiwertigen Lanthaniden und Actiniden mit der Mineralphase Calcit
… Dabei wird das Ca2+ im Calcitgitter gegen An3+/Ln3+ bzw. AnOH2+/LnOH2+ (pH-Wert Abhängigkeit) ersetzt. TRLFS Messungen bei T £ 18 K zeigen zudem, dass bei der Dotierung des Calcits unterscheidbare „Sites“ entstehen, die auf Gitterverzerrungen oder Umstrukturierungen um das Fremdion …
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Synthesis, Functionalization, and Characterization of Dominant UV Emitting Upconverting Nanocrystals and Absolute Quantum Yield and Power Dependence Metrics for the Elucidation of Upconversion Mechanisms
… or cooperatively excite long-lived lanthanide (Ln3+) 4f excited states and, through various energy transfer processes coupled between both the UCNC material composition and its integral Ln3+ dopants, are capable of building an excited state population capable of emitting in higher frequencies …
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Density functional theory investigation into mechanisms of metal ion-promoted and base-promoted phosphorothioate cleavage reactions and Lanthanide ion catalysts for kinetic resolution of amino acid esters
Described here are chiral Ln3+ complexes of Schiff-base ligands and their use as catalysts for the kinetic resolution of the 4-nitrophenyl esters of N-Boc glutamine and phenylalanine through an enantioselective methanolysis/ethanolysis reaction. Catalysts were screened in various solvents and …
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Low-dimensional and frustrated magnetism in complex lanthanide oxides
… ceramic methods. In Ca4LnO(BO3)3 the magnetic Ln3+ ions form quasi-one-dimensional chains. The crystal structure was investigated using powder X-ray and neutron diffraction and the bulk magnetic properties were determined by magnetic susceptibility and heat capacity. There is evidence for …
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Activity and Structure of Auditory Brain Neurons Underlying Phonotactic Behaviour in Female Crickets
… The tuning of the coincidence detector (LN3) and the feature detector (LN4) to the stimuli with varied intervals matched the behavioural tuning but did not reflect the behavioural responses when the duration of pulses were varied. The results also demonstrate that the mechanisms …
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Fundamental Studies on the Extraction of Rare Earth Elements from Ion Adsorption Clays
… between the hydration enthalpies of the Ln3+ ions that are in the range of -3,400 kJ/mole and that of the NH4+ ions (-320 kJ/mole). In the present work, alkylammonium ions (CnH2nNH4+) of varying chain lengths were used as novel lixiviants and obtained excellent results. Since these are …