A diminutive modification in arylamine electron donors: synthesis, photophysics and solvatochromic analysis--towards the understanding of dye sensitized solar cell performances.

An electron rich donor moiety plays an important role in dye sensitized solar cells (DSCs). In order to attain a suitable donor moiety for DSCs, a deeper understanding of the role of a donor moiety in the dye excited state is significant. In this context, different arylamine dye-based electron donor moieties (TRA, CRA and PyRA) were successfully synthesized and well characterized using (1)H-NMR, (13)C-NMR and EI-MS spectrometry.