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作 者:JIM Cathy K W LAM Jacky W Y HAEUSSLER Matthias
出 处:《Science China Chemistry》2008年第8期705-708,共4页中国科学(化学英文版)
基 金:Supported by the Research Grants Council of Hong Kong (Grant Nos. 602707, 602706, HKU2/05C and 603505);the National Science Foundation of China (Grant No. 20634020);the Ministry of Science and Technology of China (Grant No. 2002CD613401).
摘 要:This paper presents a new synthetic route to hyperbranched polymer. An arylene bipropiolate monomer,dimethylmethylenebis(1,4-phenylene) bipropiolate,was prepared by a one-step esterification reaction of bisphenol A with propiolic acid. Polycyclotrimrtization of the monomer was effected by reflux in dimethylformamide(DMF),producing a soluble hyperbranched poly(aroxycarbonylphenylene) in a good yield. The polymer was perfectly branched with a degree of branching of 100%.This paper presents a new synthetic route to hyperbranched polymer. An arylene bipropiolate monomer, dimethylmethylenebis(1,4-phenylene) bipropiolate, was prepared by a one-step esterification reaction of bisphenol A with propiolic acid. Polycyclotrimrtization of the monomer was effected by reflux in dimethylformamide (DMF), producing a soluble hyperbranched poly(aroxycarbonylphenylene) in a good yield. The polymer was perfectly branched with a degree of branching of 100%.
关 键 词:CYCLOTRIMERIZATION regioselectivity HYPERBRANCHED polymer
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