A series of organic D-π-A dyes, endowed with different silicon-based anchoring groups, has been prepared to assess the stability of such anchoring moieties on nanocrystalline TiO 2 in dye-sensitized solar cells. Due to the difficulties encountered in finding a reliable and robust preparation protocol to obtain pure trialkoxysilanes, replacement with a silatrane moiety was evaluated. It was found that the silatrane group could be easily introduced on three different molecular scaffolds by using a simple amide coupling reaction mediated by EDC-Cl. Furthermore, the spectroscopic properties and anchoring mode on nanocrystalline TiO 2 of the silatrane dyes were found to be nearly identical to those of the trialkoxysilane compounds, and both gave a much more stable attachment to the semiconductor compared with their cyanoacrylic acid counterpart, as shown by desorption experiments.
|Titolo:||Synthesis of Silatrane-Containing Organic Sensitizers as Precursors for Silyloxyl Anchoring Group in Dye Sensitized Solar Cells|
REGINATO, GIANNA (Corresponding)
|Citazione:||Bessi, M., Monini, M., Calamante, M., Mordini, A., Sinicropi, A., Basosi, R., et al. (2017). Synthesis of Silatrane-Containing Organic Sensitizers as Precursors for Silyloxyl Anchoring Group in Dye Sensitized Solar Cells. SYNTHESIS, 49(17), 3975-3984.|
|Appare nelle tipologie:||1.1 Articolo in rivista|