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Showing 1 to 14 of 14 for “"molecular magnetism"”.
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Molecular Magnetism: The Design, Synthesis, and Characterization of New Building Blocks for Molecule-based Magnetic Materials
… of a new family of ligands (H2L 1)-(H2L 4). The molecular structures of three ligands have been fully characterized by X-ray crystallography. [molecular structure diagram will not copy here, but is available in full pdf.] The coordination chemistry of these ligands with divalent first row …
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Polynuclear 3d/4f-Metal Complexes as Molecular Magnetic Refrigerants and Single-Molecule Magnets
… properties, specifically single-molecule magnetism and the magnetocaloric effect. In this thesis, Chapter 1 lays the foundation for the research presented within. This section covers the fundamentals of polynuclear metal complexes, molecular magnetism, and the magnetocaloric effect, as …
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Chemical Control of the Spin-Phonon Interaction to Develop a New Generation of Molecular Quantum Bits
Molecular magnetism is a fascinating field critical to the development and understanding of new technologies such as molecular quantum bits and quantum memories. Implementing these materials is fundamentally limited by the rapid decay of populations of electronic spins back to magnetic equilibrium. …
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Investigating the Cluster Chemistry of α-Methyl-2-pyridine methanol (mpmH) with Select 3d Ions
… properties. Chapter 1 introduces the theory of molecular magnetism, SMMs and the concepts of chiral SMMs, magnetochiral dichroism and multiferroics. In Chapter 2, two NiII clusters, {Ni8} and {Ni18} prepared from rac-mpmH are reported. The {Ni8} cluster crystallizes in a trapezoidal prismatic …
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Bismuth-, Tin-, and Lead-Containing Metal-Organic Materials: Synthesis, Structure, Photoluminescence, Second Harmonic Generation, and Ferroelectric Properties
… record-breaking porosity, catalytic properties, molecular magnetism, chemical separations and sensing ability, luminescence and NLO properties, multiferroic, ferroelectric, and switchable molecular dielectric properties. We are interested in synthesizing non-centrosymmetric MOM single crystals …
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High-Nuclearity Lanthanide(III) Complexes as Single-Molecule Magnets and Luminescent Materials
… within the areas of polynuclear metal complexes, molecular magnetism and optics as these are applied to 4f-metal based systems, while the research results are reported in Chapters 2, 3 and 4. In the first project (Chapter 2), the coordination chemistry of the organic chelating/bridging ligand, …
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Exploring the Structural, Magnetic, Optical, and Catalytic Properties of High-Spin Materials
… were pursued, each addressing key challenges in molecular magnetism, luminescence and sustainable catalysis. The first project examines a family of isomorphous Dy(III), Gd(III), and Tb(III)-MOFs constructed from 2',5'-bis(methoxymethyl)-[1,1':4',1''-terphenyl]-4,4'' dicarboxylic acid (H2L2.1). …
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Exploring relaxation of magnetization in paramagnetic molecules
… and Dy(terpyNO2)(NO3)3 complexes that changes in molecular geometries of paramagnetic molecules due to isomerization or molecular environment (gas, solution, crystal phase) can strongly affect the magnetization relaxation mechanisms. We showed that small geometric changes induced by molecular …
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Magnetically Interesting Coordination Complexes Based on Macrocyclic Ligands
… Chapter 1 introduces the general theory of magnetism, molecular magnetism and SMMs and provides the reader with a brief overview of the relevant coordination chemistry of the two families of macrocycles. In Chapter 2, two 15-crown-5 complexes [Ln(NO3)3(OH2)2(MeOH)], (where Ln(III) = Tb (I) …
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Tetrazines and N-Rich Organic Compounds Throughout the Fields of Materials Chemistry
… such as luminescence, conductivity, or magnetism (or any combination thereof), to enhancing the efficiency of catalytical materials, to working closely with engineers in an effort to create novel devices, the number of avenues through which one may explore the field is practically …
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Investigating and Enhancing Spin Reversal Barriers in Dinuclear 4f Single-Molecule Magnets and the Ultimate Shift to Mononuclear 3d Complexes
In order for molecular magnetic materials to become applicable, they must retain their magnetisation at reasonable temperatures, which can be achieved with high energy barriers for spin reversal and high blocking temperatures. In the field of Single-Molecule Magnets (SMMs), over the last decade, …
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Tunable High-Field/ High-Frequency ESR and High-Field Magnetization on Single-Molecule Clusters
In this work, low dimensional iron group clusters have been studied by application of high magnetic fields. The magnetization has been probed with an MPMS as function of temperature and field. The combination with pulse field measurements up to 52\,T allowed determination of the magnetic exchange …