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Theses

Polymers functionalized with chromophores for applications in photovoltaics, photonics and medicine

Abstract : The thesis entitled "Polymers functionalized with chromophores for applications in photovoltaics, photonics and medicine" is structured in three chapters dealing with: a) the obtaining of chromophores and new materials for dye-sensitized solar cells; b) the obtaining of new fullerene-C60 derivatives with increased absorption; c) the obtaining of a platform allowing the attachment of lightharvesting dyads PDI-C60 including a free functional group for further applied developments of which one consisting in grafting onto a polymeric chain for increased processability; d) the obtaining of polymer photonic crystals and the utilization in dye emission modification and the building of complex heterostructures with chemosensor capabilities. In the first chapter new materials for hybrid dye-sensitized solar cells are presented with the aim of constructing solid state solar cells using polymers to replace the liquid electrolyte. Furthermore, strategies for improving the cell efficiency by using a dye with better anchoring on the TiO2 layer capacity, and the use of quantum-dots particles for the increasing of the electron injection rate have been tested. In the second chapter the obtaining of new fullerene based light-harvesting antennas is presented. Fullerene-phthalocyanine adducts were obtained and electron transfer was proven through fluorescence spectroscopy. A PDI-C60 dyad was successfully attached onto a polymeric chain for increasing processability for applications in bulk-heterojunction solar cells. In the third chapter the optical properties and use as chemosensor of polymer photonic crystals and complex heterostructures modified with fluorescent dyes was investigated.
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Theses
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Submitted on : Thursday, April 10, 2014 - 11:53:27 AM
Last modification on : Thursday, December 9, 2021 - 3:46:03 PM
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  • HAL Id : tel-00976715, version 1

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Aurel Diacon. Polymers functionalized with chromophores for applications in photovoltaics, photonics and medicine. Organic chemistry. Université d'Angers, 2011. English. ⟨tel-00976715⟩

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