“Preparação e Caracterização de Compósitos Formados por Polímeros Conjugados e Nanopartículas de Óxidos Metálicos”

Detalhes bibliográficos
Ano de defesa: 2013
Autor(a) principal: Santos, Fabio Santana dos lattes
Orientador(a): Garcia, Jarem Raul lattes
Banca de defesa: Dall'antonia, Luiz Henrique lattes, Philadelphia, Laura Oliveira Peres lattes, Laureto, Edson lattes, Santana, Henrique de lattes, Marchesi, Luis Fernando Quintino Pereira lattes
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: UNIVERSIDADE ESTADUAL DE PONTA GROSSA
Programa de Pós-Graduação: Programa Associado de Pós-Graduação em Química - Doutorado
Departamento: Físico Química, Química Analitica, Química Organica, Química Inorgânica
País: BR
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede2.uepg.br/jspui/handle/prefix/15
Resumo: In this work, we sought to develop a methodology for the preparation of composite conductive polymer metal oxides for application in photovoltaic devices. The goal is the preparation of in-situ deposition of polymer and TiO2 oxide, in a single step by Electrochemical Synthesis of the substrates with architecture specially prepared for this. This study was divided into three stages, initially prepared molecules that give may give rise to monomers precursors of conjugated polymers derived from poly-p-phenylenevinylene PPV and polythiophene, groups attached to the aromatic ring of the polymer chain, the type (-O-(CH2) xCH3, X = 9 or 4), and the CN group. We conducted theoretical based on the DFT method (Density Functional Theory) and experimental studies of bromination reactions by different routes, using CCl4 as a solvent, AcOMe and aqueous HBr/KBr. We carried out the preparation of ZnO nanoparticles by hydrothermal route. In a second step was conducted in the preparation of a copolymer (DCN-PPV/PPV) to evaluate the effect of the CN group in the structure. Studies electrochemical synthesis of polymers and copolymers composite polymer/nanoparticulate (TiO2) and (ZnO) oxide in order to create a form of application and the construction of a prototype of a photovoltaic device. We tested two electrochemical systems a compound of acetonitrile (ACN) tetrafluoroborate tetrabutylammonium (TBABF4) for synthesis of polyfluorene (PF) and polybenzofluorene (PBF), we tested for this through the addition of (TiO2) and (ZnO). We also evaluated the electrochemical synthesis of polymer poly-p-phenylene (PPP), polythiophene (PT) and between them copolymer (PPP/PT) in the middle of boron trifluoride diethyl etherate (BFEE), this system is realized The addition of 1% distilled water. Finally, we performed a preliminary study on the application of composites PF and TiO2, MB-PPV and TiO2, synthesized electrochemically in photovoltaic devices made in accordance with the structure (anode/polymer pure or composite/cathode); also being investigated nanolayers influence of the metal insert (NCM) nanolayers in the case of gold, the structure of the device (anode/NCM/ polymer pure or composite/cathode).