Study Of Synthesis And Property Of Cross-coupling Conjugated Polymers Constituted Aromatic Rings And Heterocycle

A serial of novel thiophene and furan-based main chain conjugated compound with varieties of aromatic rings and heterocycle, such as fluorene and pyridazine, have been synthesized on the base of a lots of references and summarized other research work. The corresponding polymers have been prepared with facial synthesizing method,Ultrasonic induced polymerization method and solid-state reaction synthesis method. Their structures have been examined by FTIR and Uv-vis spectro. It attempts to improve the coplymer's properties .(1) A serial of novel thiophene,furan-based main chain conjugated compounds with varieties of aromatic rings and heterocycle, such as pyridazine and fluorine, have been prepared by tetra(triphenylphosphine)palladium (Pd(PPh3)4) catalyzed method. These compounds were characterized by FT-IR, 1H-NMR and elemental analysis.(2)Poly(3,6-dithiophenyl-pyridazine),Poly(3,6-difuran-pyridazine),poly(2,7-dithiophen-fluorene) and poly (2, 7-difuran-fluorene) have been prepared by a novel solid-state phase reaction synthesis method at room temperature and were characterized by FT-IR, Uv-vis, XRD, SEM , CV. These polymers prepared by the method had good electrochemical properties.(3)Ultrasonic induced polymerization of Poly(3,6-dithiophenyl-pyridazine), Poly- (3,6-difuran-pyridazine), poly(2,7-dithiophen-fluorene) and poly (2, 7-difuran- fluorene) in the presence of Sodium Dodecylbenzene Sulphate as Surfactant. The Polymers were characterized by FT-IR spectra,fluorescent spectra,UV-vis absorption spectra,SEM,and XRD. We found that the polymers can be synthesized just when the molar ratio is right.(4) The derivatives of pyridazine and fluorene such as Poly(3,6 -dithiophenyl-pyridazine), Poly(3,6-difuran-pyridazine), poly(2,7-dithiophen- fluorene) and poly (2, 7-difuran-fluorene) were synthesized by facial method and were characterized by FT-IR, Uv-vis, XRD, SEM , CV. we found that the polymers can be synthesized just when the molar ratio is right.