No abstract

Synthesis of dendrimers with pyrene at the surface and benzenetricarboxylic acid and phloroglucinol at the core and with ester functionality as branching points has been described. When such dendrimers are used as an additive in DSSC, power conversion efficiency of 6.78% is observed.

Synthesis of polyolefinic aromatic molecules with pyrene as the surface group, and their role as an additive in the redox couple of dye-sensitized solar cells, is described. The studies yield a promising power conversion efficiency of 5.27% with a short circuit current density of 6.50 mA cm À2 , an open circuit voltage of 0.60 V, and a fill factor of 0.54 under 40 mW cm À2 simulated air mass (A.M.) 1.5 illumination. Most importantly, the photocurrent responsivity increases with an increase in the number of pyrene units on the surface.

No abstract

Synthesis of thiophenophanes with ethyne and ethene spacers has been achieved by O-alkylation, Glaser-Eglinton and McMurry coupling techniques.