Synthesis And Property Study Of Alternating Conjugated Polymers Constituted Of Varieties Of Aromatic Rings And Heterocycle By Using Oxidative Polymerization Method

A serial of novel thiophene-based main chain conjugated compound with varieties of aromatic rings and heterocycle, such as acenaphtenequinoxaline phenanthrenequinoxaline ,have been synthesized on the base of looking for lots of references and summarized others research work. The corresponding polymers have been prepared with electropolymerization method and solid-state reaction synthesis method. Poly(benzidine–co-pyrrole) , poly(o-dianisidine-co-pyrrole) and poly(o-tolidine- co-pyrrole) were electrochemically copolymerizied ,the copolymerization method and the condition of copolymers have been studied . Its structure has been examined by FTIR and Uv-vis spectroscopies.It is attempt for improving the coplymer's properties .(1) A serial of novel thiophene-based main chain conjugated compound with varieties of aromatic rings and heterocycle,such as phenanthrenequinoxaline ,acenaphtenequin -oxaline ,pyridazine ,2,1,3-benzothiadiazole and benzene have been prepared by tetra(triphenylphosphine)palladium (Pd(PPh3)4) catalyzed method. These compounds were characterized by FTIR, 1H-NMR and elemental analysis(2) 5,8-dithiophenyl-phenanthrenequinoxaline , 5,8-dithiophenyl-acenaphtenequinoxaline ,3,6-dithiophenyl-pyridazine,1,4-dithiophenyl-benzene and 4,7-dithiophenyl- 2,1,3-benzothiadiazole have been electrochemically polymerized in a composite electrolyte of acrylonitrile containing Et4NBF4 as a supporting electrolyte. The emitted wavelength of poly(5,8-dithiophenyl–phena -nthrenequnoxaline), poly(1,4-dithiophenyl-benzene) and 4,7-dithiophenyl -2,1,3 -benzothiadiazole were 602nm,488nm and 599 in the photoluminescence spectra ,respectively. The cyclic voltamogram of polymers show good electrochemical properties and stability.(3) Poly(5,8-dithiophenyl-phenanthrenequinoxaline) and Poly(5,8-dithiophenyl- acenaphtenequinoxaline) have been firstly prepared by a novel solid-state reaction synthesis method and were characterized by FT-IR, Uv-Vis, XRD,...