Electrochemical Generation of Porphyrin-Porphyrin andPorphyrin-C60Polymeric Photoactive Organic Heterojunctions

MARÍA BELÉN SUAREZ, JAVIER DURANTINI, LUIS OTERO, THOMAS DITTRICH, MARISA SANTO,MARÍA ELISA MILANESIO, EDGARDO DURANTINI, MIGUEL GERVALDO. *

ELECTROCHIMICA ACTA

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2014 vol. 133 p. 399 - 406

0013-4686

Photoactive organic-organic interfaces are formed by electrochemical synthesis. The generation of por-phyrin/porphyrin and porphyrin/C60heterojunctions over indium tin oxide electrodes by successiveelectropolymerization steps is described. Functionalized C60buckminsterfullerene holding a carbazolresidue and porphyrins containing carbazol and phenylamino moieties are able to form electrodepositedlayers by cyclic voltammetry. Photoinduced electron transfer between Zn(II), free base porphyrins and C60films were analyzed by both, light modulated surface photovoltage spectroscopy and laser induced tran-sient photovoltage. The results showed that the electrochemical generated polymeric heterojunctionsare able to produce photoinduced charge separated states, which could present a potential applicationin the design and construction of organic optoelectronic devices.