Synthesis, characterization, and optical properties of new conjugated polymer based on 2,6-bis(4-bromophenyl)-4-(naphthalen-1-yl) and it’s feasibility to use in active nanolayers for application in polymeric solar cells

A new conjugated polymer were synthesized via reaction of new pyridine containing dibromo, 2,6-bis(4-bromophenyl)-4-(naphthalen-1-yl) pyridine, with commercial dibronic ester via Suzuki cross-coupling reactions.2,6-bis(4-bromophenyl)-4-(naphthalen-1-yl) pyridine was synthesized starting from condensation reactions of4-bromoacetophenone and 1-naphthaldehyde. The synthesized monomer and polymers were characterized by FT-IR,NMR. The physical properties of the polymers, including solubility and viscosity were studied, and the results showedacceptable solubility and good chain growth for polymers. Maximum absorption peak for polymer was 388 nm. Theoptical band gap energy of the polymers was determined by absorption onset and found to be 2.38 eV for polymer. Innext step, a solution of synthesized polymers and ZnO nanoparticle was coated on the surface of ITO by spin coatingmethod. Characteristics on these cells were done and also the thickness of layers was measured by AFM.

کلیدواژه ها:

Kröhnke pyridine ، Suzuki coupling ، Band gap ، Pyridine-thiophene containing polymers ، Solar cell