Thesis (Ph. D.) -- California Institute of Technology, 2010. / Title from home page (viewed 03/02/2010). Advisor and committee chair names found in the thesis' metadata record in the digital repository. Includes bibliographical references.

No description available.

Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 202-211).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1975. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

No description available.

Thesis presented for the degree of Magister Technologiae: Chemistry in the Faculty of Applied Sciences at the CAPE PENINSULA UNIVERSITY OF TECHNOLOGY / The separation of isomers with similar chemical structures is one of the most difficult procedures in chemistry. This is because their physical and chemical properties are generally so similar that most of the common techniques are not successful. In such situations one employs host-guest chemistry, as a tool of separation technology. In this thesis three aromatic hydrocarbon host compounds 9,9’-bianthryl (H1), 9,9’-spirobifluorene (H2) and trans-2,3-dibenzoylspiro(cyclopropane-1,9’-fluorene) (H3) were investigated in terms of their selectivity towards heterocyclic aromatic compounds (pyridine, PYR; piperidine, PIP; morpholine, MOR and 1,4-dioxane, DIO), cyclohexanone derivative compounds (cyclohexanone, CYHA; 2-methylcyclohexanone, 2-MCYHA; 3-methylcyclohexanone, 3-MCYHA and 4-methylcyclohexanone, 4-MCYHA) and the xylene isomers (ortho-xylene, ox; meta-xylene, mx and para-xylene, px). The H1, H2 and H3 host compounds were combined with a series of the heterocyclic compounds and six inclusion compounds were formed: H1•MOR, H2•2PYR, H2•PIP, H2•MOR, H2•DIO and H3•PYR. In the second part the derivatives of cyclohexanone formed inclusion compounds with the hosts H1 and H2. The H1•2CYHA, H1•ANT, H1•0.5(2-MCYHA) and H3•CYHA structures were obtained. In the third part the H1 formed clathrates with ox and px; H2 and H3 only formed clathrates with px and ox respectively. The following four structures were obtained: H1•0.5ox, H1•0.5px, H2•0.5px and H3•ox and were analysed by single crystal X-ray diffraction (SCXD), powder X-ray diffraction (PXRD), proton nuclear magnetic resonance spectroscopy (1H-NMR), thermal gravimetry (TG) and differential scanning calorimetry (DSC). It wasconcluded that H2 discriminates between the four heterocyclic compounds as follows: PIP > MOR ≈ DIO ≈ PYR and this can be explained by the 1H-NMR results and the packing features. In analysis of the xylene isomers, it was found that the three hydrocarbon host compounds H1, H2 and H3 efficiently discriminate between the isomers by forming inclusion compounds. H1 enclathrates both ox and px but prefers the former. This can be explained in terms of the packing features and lattice energies. H2 and H3 only enclathrate px and ox respectively. It was concluded that host compounds with small conformational movements are potentially good in selective inclusion.

Lee Ka-lun. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references. / Acknowledgments --- p.ii / Abstract --- p.iii / Table of Contents --- p.v / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1 --- Phase Separation in Glass-Forming Alloys --- p.2 / Chapter 1.1.1 --- Metallic Glass --- p.2 / Chapter 1.1.2 --- Phase Separation in Metallic Glasses --- p.3 / Chapter 1.1.3 --- Phase Separation in the Undercooled Melts of Glass-Forming Alloys --- p.4 / Chapter 1.2 --- Theory of Phase Separation --- p.5 / Chapter 1.2.1 --- Thermodynamics of Phase Separation --- p.5 / Chapter 1.2.2 --- Phase Separation by Nucleation and Growth --- p.7 / Chapter 1.2.3 --- Cahn's Theory of Spinodal Decomposition --- p.8 / Chapter 1.3 --- Experimental Method to Achieve High Undercooling --- p.11 / References --- p.14 / Figures --- p.15 / Chapter Chapter 2: --- Phase Separation in Undercooled Molten Pd80Si20 --- p.23 / Abstract --- p.24 / Introduction --- p.25 / Experimental --- p.29 / Results --- p.30 / Discussions --- p.36 / References --- p.45 / Figures --- p.47 / Chapter Chapter 3: --- Metastable Liquid Phase Separation in Undercooled Molten Pd40.5Ni40.5P19 --- p.60 / Abstract --- p.61 / Introduction --- p.62 / Experimental --- p.62 / Results and Discussions --- p.63 / References --- p.68 / Figures --- p.69 / Chapter Chapter 4: --- Crystallization of Spinodal Decomposed Melts of Pd80Si20 --- p.74 / Introduction --- p.75 / Experimental --- p.76 / Results --- p.77 / Discussions --- p.80 / References --- p.84 / Figures --- p.85

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.

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