Publicação
Synthesis of Photoactive Dendrimers for Green Photovoltaics
| Resumo: | This master thesis was focused on synthesis and characterization of active components for the fabrication of hydrogel-based organic solar cells (artificial leaves). The synthesis of a complex photoactive dendrimer and a novel ruthenium sensitizer and the synthesis of a “clickable” β-cyclodextrin were successfully achieved. This “nanovelcro” will be a crucial component of the final photoactive dendrimer unit, and will be used in forthcoming work. Preliminary fluorescence and cyclic voltammetry studies were performed for photoactive species, PIMAM-OMeG1 and Ru(dcbpy)2(NCS)(EAFc), with very promising results. PIMAM-OMeG1 has shown the capacity of absorbs and emits light and both species have a redox potential. Due to the low solubility of photoactive dendrimers in organic solvents and water, PIMAM-OMeG1 suffered several transformations for improving its solubility. Therefore, the final devices were constructed using an ion gel as matrix, instead of a hydrogel. |
|---|---|
| Autores principais: | Pires, Rita Figueiredo |
| Assunto: | Supercritical carbon dioxide Photoactive dendrimers Artificial Leaf OPV cell Organic electronics |
| Ano: | 2015 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | This master thesis was focused on synthesis and characterization of active components for the fabrication of hydrogel-based organic solar cells (artificial leaves). The synthesis of a complex photoactive dendrimer and a novel ruthenium sensitizer and the synthesis of a “clickable” β-cyclodextrin were successfully achieved. This “nanovelcro” will be a crucial component of the final photoactive dendrimer unit, and will be used in forthcoming work. Preliminary fluorescence and cyclic voltammetry studies were performed for photoactive species, PIMAM-OMeG1 and Ru(dcbpy)2(NCS)(EAFc), with very promising results. PIMAM-OMeG1 has shown the capacity of absorbs and emits light and both species have a redox potential. Due to the low solubility of photoactive dendrimers in organic solvents and water, PIMAM-OMeG1 suffered several transformations for improving its solubility. Therefore, the final devices were constructed using an ion gel as matrix, instead of a hydrogel. |
|---|