Efficiency of light harvesting is a key property in Dye-Sensitized Solar Cells. To achieve good efficiency of the device, artificial anthocyandin dyes were synthesized using an Aldol condensation reaction, then their spectrophotometric properties were characterized by Ultraviolet-Visible spectroscopy. Flavylium rings with different functional groups showed various absorption spectra due to the effect of extended conjugation and steric hindrance. They also exhibited isosbestic points, meaning the dyes have multiple equilibrium states depending on pH of the solution. In this presentation, the relationship of dye structures and absorption spectra in acidic, neutral, and basic solutions will be discussed.

Spectrophotometric study of pH dependent artificial anthocyanidins for dye-sensitized solar cells

256th National Meeting (2018)

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