Thesis (Ph. D.)--University of Wisconsin--Madison, 1967. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph.D.)--Bowling Green State University, 2006. / Document formatted into pages; contains xxi, 215 p. : ill. Includes bibliographical references.

Thesis (Ph. D.)--University of Chicago, Dept. of Chemistry, December 1997. / Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references. Also available from UMI.

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The syntheses, spectroscopic characterisation, photophysical and photochemical studies have been conducted for a variety of phenylthio substituted phthalocyanines (Pcs). Comparisons have been made taking into consideration the influence of the central metal ion, solvent properties and substituent type. The optical limiting properties were also determined for all the Pcs synthesised. A low-symmetry metallophthalocyanine complex was similarly characterised and the photoelectrochemical parameters determined when used as a sensitiser of nanoporous ZnO. The symmetric analogue was conjugated to gold nanoparticles to determine the influence of interactions on its photophysical properties and distinct differences occurred in the absorption and fluorescence spectra suggesting successful formation of conjugates.

The syntheses, extensive spectroscopic characterization, photophysical and photochemical studies have been conducted for a variation of d10 metallophthaloycanines (MPcs). Comparisons have been made taking into consideration the nfluence of the central metal ion, solvent properties, substituent type and position. Coordination to heavy central metals i.e. Hg gives enhanced triplet state properties. Low symmetry metallophthalocyanine complexes were similarly haracterized and the influence of nteractions with nanoparticles on their photophysical and photochemical properties determined. The MPcs have been linked and adsorbed or mixed with nanoparticles i.e. hemically functionalized single-walled carbon nanotubes SWCNT) and mercaptocarboxylic acid capped CdTe quantum dots (QDs) and changes in the spectra accounted for with respect to the proposed conjugate structures. Distinct differences ccur for linked and adsorbed or mixed conjugates in the bsorption, infrared (IR) and Raman spectra and for thermal ravimetric decay profiles, suggesting successful formation f covalent bonds (linked) and point to structurally ifferent materials. SWCNT quench MPc fluorescence by a photoinduced electron transfer mediated process to give low fluorescence quantum yields. The QDs were used as energy transfer donors and facilitate energy transfer, through Förster resonance energy transfer (FRET) from the QDs to the MPcs. Improved FRET efficiencies were found for linked MPc-QD conjugates relative to the mixed species. Photophysicochemical properties of MPcs were, in general, improved as a result of interactions with nanoparticles.

Irradiation of [special characters omitted] at 313 nm in basic solution at 10°C in the presence of free SCN yields the products [special characters omitted], and [special characters omitted]. Analysis of product distribution was done by HPLC using a [special characters omitted] column and ion pairing reagents with methanol and water as the eluent. The aquation/anation product ratio is independent of X, but depends linearly on the concentration of SCN. A specific ion effect is observed, the aquation/anation ratio showing a correlation with the radius of the cation. The ratio of sulfur to nitrogen thiocyanato product is 10±2, independent of X, concentration of SCN, and cation, but is different that measured in the thermal anation of [special characters omitted] which gives a S/N ratio of 4. A limiting dissociative mechanism is proposed for the photosubstitution, involving a five coordinate intermediate of sufficient kinetic stability to discriminate among entering groups. The constant S/N ratio for the photosubstitution leads to the conclusion that the intermediate formed in the photoreaction is different from that formed in the thermal reaction. Direct anation has been reported previously for aquopentacyanocobaltate, but not for hexacyanocobaltate. Quenching of the emission lifetime of [special characters omitted] in the presence of chloride salts shows the same order of cation assistance with cation radius as observed for the aquation/anation ratio. / Graduate