Synthesis and characterization of carbazole derivatives for organic light-emitting diode and indole derivatives for dye-sensitized solar cell

In this research, carbazole derivatives end-capped with pyrene (CP2) and anthracene (CA2) have been synthesized using bromination and Suzuki cross-coupling reaction and characterized by 1H NMR, 13C-NMR, FT-IR, UV-Vis, florescence and mass spectroscopy and cyclic voltammetry. Compound 9-dodecyl-3,6-di(pyren-1-yl) carbazole (CP2) and 9-dodecyl-3,6-di (anthracen-1-yl) carbazole (CA2) showed the PL spectra in deep blue region at 430 nm and 442 nm and exhibited high electrochemical stability. These compounds could be alternative materials for using as blue light-emitters in organic light emitting diodes.
Moreover, a new series of indole deruvatives In1-In5, containing indole derivatives as electron donating, double bond or phenyl group as -spacer and carboxyl group as electron acceptor and anchor, for using as dye molecules in DSSCs were successfully synthesized. The target molecules were synthesized by using Ullman coupling, hydrolysis reaction, Knoevenagal condensation and Vilsmeier Haack reaction. The target compound In1-In5 could be promising candidates for improvement of the performance dye of the DSSCs.
Finally, target molecules, In1-In5 were characterized by using 1H-NMR, 13C-NMR, FT-IR and mass spectroscopy.