info:eu-repo/semantics/article
Electrochemical formation of photoactive organic heterojunctions. Porphyrin-C60 polymeric photoelectrochemical cells
Fecha
2020-10Registro en:
Solis, Claudia Alejandra; Durantini, Javier Esteban; Macor, Lorena Paola; Heredia, Daniel Alejandro; Gonzalez Lopez, Edwin Javier; et al.; Electrochemical formation of photoactive organic heterojunctions. Porphyrin-C60 polymeric photoelectrochemical cells; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 365; 10-2020; 1-30
0013-4686
CONICET Digital
CONICET
Autor
Solis, Claudia Alejandra
Durantini, Javier Esteban
Macor, Lorena Paola
Heredia, Daniel Alejandro
Gonzalez Lopez, Edwin Javier
Durantini, Edgardo Néstor
Mangione, María I.
Rappich, Jörg
Dittrich, Thomas
Otero, Luis
Gervaldo, Miguel Andres
Resumen
Fully polymeric donor-acceptor organic-organic heterojunctions were successfully formed by successive electrochemical polymerization steps. C60 holding polymer acted as an electron acceptor layer when it was electrochemically deposited on the top of a porphyrin based conducting polymer with dendrimeric structure. Porphyrin fluorescence emission quenching and energy dependent surface photovoltage analysis demonstrated that the heterojunctions produced photoinduced charge separated states. Also, it was found that after irradiation of heterojunctions the photogenerated electrons traveled to the C60 external surface, while the holes moved to the inner hole transport layer. When the heterojunctions were used in photoelectrochemical cells, the generated light-induced charge separated states were able to electrochemically reduce electron acceptors in aqueous media.