Abstract
Purified anthocyanin extracts were obtained from pitanga fruits (Eugenia Uniflora L.) and characterized by visible spectroscopy and FTIR, and the stability up to 85 ° C evaluated. These anthocyanins were mixed with different amounts of Mg2 +, Al3 +, Cr3+ at different working pH, finding the optimal complexation ratio for each system. The systems were also characterized by redox measurements, obtaining an oxidation potential close to 1 V for all cases, confirming the favourable characteristics of the compounds evaluated for their use in DSSC cells. FTIR confirmed the binding of anthocyanins and metal complexes to TiO2. The DSSC cells evaluated showed maximum conversion efficiency values of 0.24 % in complexes with chromium.
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