Synthesis And Properties Of Conjugated Copolymer Consisted Quinoxaline

Preparation and properties of have been paid much attention always. Quinoxalinic compound is eletrondefect compound with aromatic fused rings. Polymers with quinoxalinic fused rings were studied. But, compound with aromatic condensed rings,especially, Copolymers with quinoxalinic fused rings in their side chain and with eletronsufficient radical were researched rarely. We prepared ever quinoxalinic derivatives with quinoxalinic fused rings in their side chain, and prepared homopolymer by Palladium as catalysist. But copolymers with quinoxalinic fused rings and eletronsufficient radical is rarely. reported. The four copolymers with quinoxalines were synthesized in this thesis. The main contents of this thesis were as followed.In Chapter Two , 2,1,3-benzothiadiazole was synthesized from o-phenylendia- mine and thionyl chloride.5,8-dibromo-benzothiadiazole was prepared from 2,1,3-benzothiadiazole and bromine. 1,4–dibromo-2,3-diaminobenzene was prepared from 5,8-dibromo-benzothiadiazole and Zn. 5,8-Dibromo-[2,3-b]acenaph- tenequinoxaline was prepared from 1,4–dibromo-2,3-diaminobenzene and acenaphtenequinone, 5,8-Dibromo-[2,3-b]phenaphrenequinoxaline was also prepar-ed analogously by using 1,4–dibromo-2,3-diaminobenzene and phenaphreneq- uinoxaline . The prepared monomers were characterized by FT-IR and 1H-NMR.In Chapter Three, 3-alkyl-thiophene was prepared from 3-bromothiophene . 2,5-dibromo-3-alkylthiophene was prepared from 3-alkyl-thiophene and NBS. The prepared monomers were characterized by FT-IR and 1H-NMR.In Chapter Four, 1,4-dialkoxybenzene was synthesized from dihydroxybenzene and halohyalkane,1,4-dibromo-2,5-dialkoxybenzene was prepared from 1,4-dia-...