Pyrimidine-Based Push–Pull Systems with a New Anchoring Amide Group for Dye-Sensitized Solar Cells
Egor V. Verbitskiy, Alexander S. Steparuk, Ekaterina F. Zhilina, В. В. Емец, Vitaly A. Grinberg, Ekaterina V. Krivogina, S. A. Kozyukhin, Ekaterina V. Belova, Petr Lazarenko, Gennady L. Rusinov, A. R. Tameev, Jean‐Michel Nunzi, Valery N. Charushin
Abstract
New donor–π–acceptor pyrimidine-based dyes comprising an amide moiety as an anchoring group have been designed. The dyes were synthesized by sequential procedures based on the microwave-assisted Suzuki cross-coupling and bromination reactions. The influence of the dye structure and length of π-linker on the photophysical and electrochemical properties and on the photovoltaic effectiveness of dye-sensitized solar cells was investigated. An increase in efficiency with a decrease in the length of π-linker was revealed. The D1 dye with only one 2,5-thienylene-linker provided the highest power conversion efficiency among the fabricated dye sensitized solar cells.