Abstract
The influence of the dye structure on the spectral and electrochemical characteristics has been investigated for a series of the anionic and intraionic polymethine dyes (PDs) of the tetranitrofluorene family. The reduction and oxidation potentials were determined by cyclic voltammetry (CVA), and HOMO and LUMO energy levels were calculated in order to predict the applicability of the dyes as TiO 2 sensitizing agents. Some types of the PD / TiO 2 heterostructures (HSs) were built and their photocatalytic activity (PA) was determined using the model reaction of iodide anion oxidation.
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