Thesis (Ph. D.)--University of Washington, 1999. / Vita. Includes bibliographical references (leaves 175-188).

Thesis (M.S.)--Duquesne University, 2007. / Title from document title page. Abstract included in electronic submission form. Includes bibliographical references (p. 48-51) and index.

Thesis (Ph. D.)--University of Alberta, 2010. / Title from pdf file main screen (viewed on June 28, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Chemistry, University of Alberta. Includes bibliographical references.

Thesis (Ph. D.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains xx, 149 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 144-149).

Thesis (M.S.)--Texas State University-San Marcos, 2007. / Vita. Includes bibliographical references (leaves 80-85).

Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 179-191).

Orientador: Miguel Jafelicci Júnior / Banca: Marco Aurélio Cebim / Banca: Renata Danielle Adati / Resumo: A auto-organização é uma das ferramentas mais versá teis e mais poderosas para a estruturação de nanopartículas em duas ou três dime nsões. A técnica de Langmuir - Blodgett é o método mais promissor para a produção de filmes bidimensionais organizados de tensoativos, polímeros e nanopartícu las (NPs), porque proporciona um bom controle da espessura e a homogeneidade da mono camada e de multicamadas. Esse trabalho visa sintetizar nanopartículas de Ag na interface ar-água utilizando filmes de Langmuir-Blodgett de surfactantes como suportes. A síntese das NPs de Ag na interface ar/água foi realizada de acordo com a met odologia de Khomutov e colaboradores. Foi possível sintetizar as NPs de Ag através do espalhamento da mistura das soluções de sulfadiazina de prata e ácido esteá rico com razão molar de 1:1. As imagens de microscopia eletrônica de varredura de a lta resolução mostram que a ausência de ácido esteárico melhorou a organização das NPs durante a síntese na interface ar/água. A composição química das NPs de prata foi determinada através da espectroscopia de energia dispersiva de raios X aco plada ao microscópio eletrônico operando no modo de varredura. Um estudo comparativ o foi feito preparando-se filmes de NPs de Ag. As nanopartículas de Ag recobertas co m dodecil sulfato de sódio foram sintetizadas de acordo com o método descrito por So ng. As nanopartículas de Ag recobertas com polietilenoglicol (MM ≈ 3400 g.mol -1 ) e com ácido oléico/oleilamina foram sintetizadas pelo método poliol. Os difratogramas d e raios X confirmaram a composição e a fase obtida em cada amostra. Foi estudada a com posição do recobrimento das NPs através da espectroscopia na região do infravermelh o e quantificado através das análises termogravimétricas. A preparação dos filme s LB de todas as amostras foi feita de acordo com o método descrito por Shin. Através... / Abstract: Self-assembly is one of the most powerful and versa tile tools for structuring nanoparticles in two or three dimensions. The Langm uir-Blodgett (LB) technique is the most promising method for production of organiz ed surfactants, polymers, and nanoparticles (NPs) two-dimensional films, because it provides good control of the thickness and homogeneity of the mono and multilaye r. This paper aims to synthesize silver nanoparticles in the air-water in terface using surfactants Langmuir- Blodgett films such as "templates". The synthesis o f Ag NPs in the air / water interface was performed according the Khomutov meth odology [1] it was possible to synthesize Ag NPs by spreading the mixture of silve r sulfadiazine solutions and stearic acid molar ratio 1: 1. Field emission gun s canning electron microscope (FEG- SEM) images show that the absence of stearic acid i mproved the arrangement of NPs during synthesis in the air / water interface. The chemical composition of silver NPs was determined by energy dispersive X-ray spect roscopy attached to the electron microscope operating in scan mode. A compa rative study was made preparing Ag NPs films. The Ag nanoparticles coated with sodium dodecyl sulfate were synthesized according to the method described by Song. The Ag nanoparticles coated with polyethylene glycol (MW ≈ 3400 g / mol) and oleic acid / oleylamine was synthesized by the polyol method. The X-ray diffrac tion confirmed the composition and phase obtained in each sample. It studied the c omposition of the coating of NPs through spectroscopy in the infrared region and qua ntified through thermogravimetric analysis. The preparation of LB films of a silver n anoparticles covered with oleic acid and olelamine (Ag@AO/OL) was done according to the methodology described by Shin et al. The images obtained by electron microsc opy high resolution scan can be observed that only the LB films of Ag nano... / Mestre

Absorption of octadecanethiol and p-nitrobenzenethiol onto gold surfaces from ethanol solutions has been studied by means of contact angle, optical ellipsometry, angle-resolved XPS (ARXPS), and with grazing angle total reflection FTIR. Growth of the monolayers from dilute solutions has been monitored and Langmuir isotherm adsorption curves were fitted to experimental data. A saturated film is formed within approximately 5h after immersion in solutions of concentrations ranging from 0.0005mM to 0.01mM. We found, that the final density of monolayer depends on the concentration of the solution.

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