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Master's Dissertation
DOI
https://doi.org/10.11606/D.46.2018.tde-24092018-153719
Document
Author
Full name
Wilmmer Alexander Arcos Rosero
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Araki, Koiti (President)
Alves, Wendel Andrade
Toyama, Marcos Makoto
Title in Portuguese
Complexos de rutênio supramoleculares do tipo metal-orgânico e sua aplicação em fotoeletroquimica
Keywords in Portuguese
Antena
Bipiridina
Buraco
Célula solar
Complexos de rutênio
Corante
Eletron
Fotoeletroquimica
Fotossensibilizador
Mesoporoso
Oxido de titânio
Porfirina
Supramolecular
Terpiridina
Abstract in Portuguese
O presente trabalho tem como objetivo contribuir para o conhecimento, entendimento e desenvolvimento das células solares sensibilizadas por corantes. Assim foram abordadas rotas sintéticas com o fim de obter novas espécies supramoleculares constituídos por fragmentos que apresentam separadamente ótimas propriedades eletrônicas e eletroquímicas. A abordagem sintética feita é muito importante dado que dá as bases para sistemas supramoleculares como o apresentado nas perspectivas, nos quais estase visando diminuir os processos de recombinação e melhor aproveitamento do espectro solar através da estabilização do corante foto-oxidado e da transferência vetorial de elétron/energia. Na série de complexos apresentada e aplicada no presente trabalho realizou-se um estudo comparativo buscando determinar qual é o melhor sistema de injeção de elétrons na banda de condução do TiO2, obtendo uma diferença considerável entre os sistemas estudados, sendo assim o sistema com o ligante acido 2,2 -bipiridine-4,4 -dicarboxilico o complexo que melhor injeta elétrons na BC.
Title in English
Supramolecular ruthenium complexes of the metalorganic type and their application in photoelectrochemistry
Keywords in English
Antenna
Bipyridine
Dye
Electron
Fotoelectrochemistry
Hole
Mesoporous
Photosensitizer
Porphyrin
Ruthenium complex
Solar cell
Supramolecular
Terpyridine
Titanium oxide
Abstract in English
The present work aims to contribute to the knowledge, understanding and development of solar cells sensitized by dyes. Thus, synthetic routes were approached in order to obtain new supramolecular species constituted by fragments that separately present excellent electronic and electrochemical properties. The synthetic approach is very important since it provides the basis for supramolecular systems such as that presented in the perspectives, in which stasis is aimed at decreasing the processes of recombination and better utilization of the solar spectrum through the stabilization of the photo-oxidized dye and the vectorial transfer of electron /energy. In the series of complexes presented and applied in the present work, a comparative study was carried out to determine which is the best electron injection system in the conduction band of TiO2, obtaining a considerable difference between the studied systems, being thus the complex with the ligand 2,2 -Bipyridine-4,4 -dicarboxylic acid the best system that injects electrons into BC.
 
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Publishing Date
2018-12-14
 
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