Hole formation and transfer in poly[9,9-di(ethylhexyl)fluorene] and an amine end-capped derivative in solution

• Autor(a) principal: Burrows, H. D.
• Data de Publicação: 2004
• Outros Autores: Seixas de Melo, J., Forster, M., Güntner, R., Scherf, U., Monkman, A. P., Navaratnam, S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/5147; https://doi.org/10.1016/j.cplett.2003.12.061

Pulse radiolysis has been used to study the positively charged state of isolated chains of poly[9,9-di(ethylhexyl)fluorene] in chloroform solution. This is found to have an absorption maximum at 560 nm and a weaker band around 420 nm. Intermolecular electron transfer is observed from the aromatic amine tri(p-tolylamine) to this species. With the corresponding polyfluorene derivative end-capped by an arylamine, intramolecular transfer of electrons from the triphenylamine end-cap to the positively charged polyfluorene chain is found on timescales faster than the detection time of the system (ca. 500 ns).