Download or read book Synthesis and Chemistry of Lanthanide Complexes with Phosphorus Ylides Amides Or Porphyrinate Ligands and of Transition Metal Complexes with Polydentate Ligands written by Lilu Zhang and published by . This book was released on 1999 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lanthanides Chemistry and Use in Organic Synthesis written by Shu Kobayashi and published by Springer. This book was released on 2003-07-01 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Synthesis Structural Characterization and Photophysical Properties of Lanthanide Complexes Containing Polydentate Amide Ligands written by 黎寶韻 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis, Structural Characterization and Photophysical Properties of Lanthanide Complexes Containing Polydentate Amide Ligands" by 黎寶韻, Po-wan, Lai, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b4257618 Subjects: Lanthanum compounds Amides Ligands Photochemistry
Download or read book Synthesis and Reactivity of Lanthanide transition Metal Polyhydride Complexes written by Daniel Alvarez and published by . This book was released on 1990 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assembled Lanthanide Complexes with Advanced Photophysical Properties written by Yuichi Hirai and published by Springer. This book was released on 2018-04-07 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides essential information on the systematic design of assembled lanthanide complexes for functional luminescent materials. It discusses the relationships between assembled structures and photo, thermal, and mechanical properties on the basis of crystallography, spectroscopy, and thermodynamics. The described guidelines for assembled structures will be extremely valuable, both for industrial applications and for readers’ fundamental understanding of solid-state photophysics and materials chemistry. Luminescent lanthanide complexes are promising candidates for lighting devices, lasers, and bio-probes owing to their line-like and long-lived emission arising from characteristic 4f–4f transitions. Low-vibrational and asymmetrical coordination structures around lanthanide ions have been introduced to achieve strong luminescence, using specific organic ligands. Recently, assembled lanthanide complexes including coordination polymers and metal organic frameworks have increasingly attracted attention as a new class of luminescent materials offering thermal stability and color tunability. However, improving the luminescence efficiencies of these compounds remains a challenge, and specific molecular designs to control assembled structures and yield additional physical properties have not been established. The author provides a group of bent-angled bridging ligands to boost photoluminescence efficiency, and successfully introduces for the first time glass formability and strong triboluminescence properties.
Download or read book The Chemistry of Lanthanide Complexes with Amide and Carboxylate Ligands written by Kwok-Kin Lau and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transition Metal Complexes with P N ligands and Silylenes written by Eva Neumann and published by . This book was released on 2006 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses Reactivity and Coordination Chemistry of D10 Metal Complexes of Phosphorus and Nitrogen Donating Polydentate Ligands written by 陳凱珊 and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Syntheses, Reactivity and Coordination Chemistry of D10 Metal Complexes of Phosphorus and Nitrogen Donating Polydentate Ligands" by 陳凱珊, Hoi-shan, Chan, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3122036 Subjects: Metal complexes - Synthesis Metal complexes - Reactivity Ligands - Synthesis
Download or read book Disubstituted 1 8 Diaminonaphthalene as Supporting Ligands for High Oxidation State Early Transition Metal and Lanthanide Complexes written by Nathalie Lavoie and published by . This book was released on 2010 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Properties of Lanthanide Metal organic Frameworks and Lanthanide metalloid Complexes written by Timothy Perkins and published by . This book was released on 2018 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials synthesis is a field at the intersections of chemistry and physics with wide-ranging applications. There is a rich diversity of techniques to develop novel materials, but very little fundamental understanding of the mechanisms that drive the formation of solids, leading to an inability to predict a synthesis for a material with targeted properties. Solvothermal synthesis has garnered much attention in the field due to its relative predictability by combining solution-phase dynamics with reactive inorganic precursors. By incorporating composition-guided organic chemistry, which often benefits from predictable properties, metal-organic frameworks (MOFs) synthesized solvothermally have emerged among the most rationally designed solids in modern science. MOFs are a class of crystalline materials composed of metal-centers linked by organic ligands, forming large, porous networks. Structures, thus some properties, can be predicted given motifs for previously determined metal-center geometries and ligand-bonding environs. Further, targeted properties can be chemically tuned via optimization of the ligand and/or metal. Early efforts in the field resulted in the intriguing materials that failed to be commercially viable due to stability issue. Metal-organic frameworks using lanthanide metal-centers (Ln-MOFs) are thought to increase thermodynamic stability of the material and present unique electronic properties such as photoluminescence. The projects presented herein focus on investigating the properties and stability of lanthanide metal-organic frameworks with a naphthalene-based ligand. To be a commercially viable material, among other things a MOF must be stable in addition to having practical properties. The increased complexity in both the accessible geometries and electronic properties of lanthanides relative to light transition metals makes this work largely exploratory. Novel, isostructural cerium, neodymium, and europium Ln-MOFs comprised of two-dimensional sheets of metal-carboxylate centers bridged by naphthalene were synthesized and photoluminescence properties analyzed. The series of Ln-MOFs studied show they have robust photoactivity that may be exploited in small molecule or ion sensing. Compound [Ce(NO3)(NDC)][sub n] was found to be stable under basic and acidic aqueous conditions, but not thermally stable to 400°C. Small aromatic molecules were screened against [Nd(NO3)(NDC)][sub n] and fluorescence quenching shown to be correlated to spectral overlap, with significant signal quenching of benzene, but no observed selective change in excitation or emission wavelengths. Further, the compound was found to be stable to 300°C in open air. In particular, compound [Eu(NO3)(NDC)][sub n] was shown to be highly fluorescent in water and is readily quenched by trace concentrations of hazardous industrial by-product chromic acid. These investigations represent a broad effort to characterize Ln-MOFs in hopes of guiding the development of similar materials that exhibit robust chemical and thermal stability and relevant properties. Isoreticular synthesis is generally, but not exactly, an appropriate tool for replicating the synthesis with naphthalene-based ligands but different lanthanide metals. Procedurally altering the reported successful synthetic conditions with lanthanide metals is highly likely to produce isostructural and comparably stable compounds that exhibit unique electronic properties. Solvothermal synthesis using thiourea as a reactive solvent was also shown to produce unique lanthanide-metalloid complex germanium (II) sulfide doped lanthanum (III) hydroxide. The complex was found to photocatalytically degrade dye methylene blue in water under UV irradiation. While, not as efficient as known photocatalyst anatase titania, it represents a new class of lanthanum oxides doped with small band gap semiconductors that may be more easily optimized for photocatalytic processes than investigations on titanium dioxide have proven to be. Such intercalated lanthanum oxides may even have other relevant photo-driven applications, such as light harvesting or water-splitting.
Download or read book The Chemistry of the Lanthanides written by Therald Moeller and published by Elsevier. This book was released on 2013-10-22 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic Chemistry, Volume 26: The Chemistry of the Lanthanides provides information pertinent to the fundamental aspects of the chemistry of lanthanides. This book discusses the electronic configurations and the consequences thereof of lanthanides. Organized into four chapters, this volume begins with an overview of the characterized state of oxidation of all the lanthanides both in solid compounds and in solutions in water and other solvents. This text then presents the data indicating an overall decrease from lanthanum to lutetium even though there is the expected increase in the sizes of atoms and derived terpositive ions in Group IIIA elements. Other chapters consider the differences between the lanthanide elements and the d-transition. This book discusses as well the types of lanthanide complexes. The final chapter deals with the estimated absolute abundances of the lanthanides in the cosmos as well as in the crust. This book is a valuable resource for inorganic chemists.
Download or read book Energy Transfer Processes in Polynuclear Lanthanide Complexes written by Shun Omagari and published by Springer. This book was released on 2019-01-17 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the luminescence mechanism of polynuclear lanthanide complexes, focusing on energy transfer processes using a combination of experimental and theoretical approaches. Lanthanide complexes show intense luminescence from the lanthanide ion through sensitization by the organic ligands. The high chromaticity of the emission and the long lifetimes of the complexes are particularly attractive for applications such as organic light-emitting diodes and bioprobes. Polynuclear lanthanide complexes (coordination polymers and clusters) have attracted considerable interest for functionalization by energy transfer between lanthanide ions. At the same time, such extra processes complicate the luminescence mechanism, hindering the rational design of functional polynuclear lanthanide complexes. Firstly, the book explains the principle of the theoretical methods, and then describes the concentration-quenching mechanism in coordination polymers. It also examines the effect of intrinsic spin–orbit coupling arising from lanthanide ions on the ligand-to-lanthanide energy transfer efficiency and the mechanism of back energy transfer (the opposite of sensitizing energy transfer) in lanthanide clusters. This sets the stage for the final topic: the suppression of back energy transfer by energy transfer between lanthanide ions in lanthanide clusters, which is of critical importance, showing that the lanthanide clusters can be considered a new generation of functional and efficient luminescent material and could also provide a breakthrough in lanthanide photophysics.
Download or read book The Catalytic Chemistry of Pi allyl Transition Metal Complexes with Phosphorus Ligands written by Louis Sheldon Stuhl and published by . This book was released on 1978 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Structure and Reactivity of the Later Transition Metal Complexes Containing a Multidentate Phosphorus nitrogen Hybrid Ligand written by Steven Michael Fornara Kennedy and published by . This book was released on 2000 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Physico chemical Studies on Dithiolene Complexes of the Closed Shell d 1hn1 1hn0 Metals and Trivalent Lanthanide Ions written by Amadou Latyr Ndiaye and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemistry of Lanthanide Complexes with Amide and Carboxylate Ligands written by Kwok-kin Lau and published by . This book was released on 2006 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Luminescence of Lanthanide Complexes with Fluorinated Alkoxide Ligands written by Elizabeth Pugliese and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
