Eur. Phys. J. Appl. Phys. 37, 277-281 (2007)
https://doi.org/10.1051/epjap:2007011

Spectrophotochemical and electrochemical characterization of perylene derivatives adsorbed on nanoporous metaloxide films^*

¹ Ege University, Solar Energy Institute, 35100 Bornova Izmir, Turkey
² Mugla University, Department of Chemistry, 48100 Mugla, Turkey

Corresponding author: siddik.icli@ege.edu.tr

Received: 21 July 2006
Revised: 28 September 2006
Accepted: 21 November 2006
Published online: 24 January 2007

Abstract

Electrochemistry of perylene imide and anhydride derivatives adsorbed on semiconductor TiO₂ (NT) and insulator Al₂O₃ (NA) metal oxide films were presented. Adsorption rates on metal oxide surface are observed to be strongly depending on molecular structure. Monoanhydride-monoimide derivatives show two reversible reductions in solution and one reversible reduction in films. Color change from red to blue and violet is observed indicating the formation of monoanion and dianion radicals. Spectroelectrochemical measurements support this interpretation. The color reversal is quite stable in NA films in comparison with NT films.