Synthesis of novel amphihilic branched polymers with well-controlled architectures with respect to position, number, and molecular weight

我们通过将阴离子活性聚合物与甲氧甲基取代的1，1-二苯基乙烯和/或其衍生物反应，成功地在链端或链中引入了一定数量的甲氧基甲基苯基。引入的数目从2到16个不等。这些甲氧甲基苯基通过三氯化硼处理定量地转化为氯甲基苯基。将所制备的氯甲基苯基官能化聚合物与另一种阴离子活性聚合物反应，得到了结构明确的杂臂星形聚合物。使用的臂段分别是聚苯乙烯、聚异戊二烯、聚环氧乙烷和聚甲基丙烯酸。此外，还发现这些官能化聚合物可以与相应的1，1-二苯乙烯衍生物衍生的官能化阴离子进行定量反应。结果，得到了链端或链中具有一定数量官能团(苯酚、葡萄糖、全氟烷基等)的新型官能化聚合物。观察到这种官能化聚合物在溶液和固态(特别是在薄膜表面)中表现出特有的行为。

We have successfully introduced a definite number of methoxymethyl-phenyl groups either at the chain ends or in the chains by reacting anionic living polymers with methoxymethyl substituted 1,1-diphenylethylene and/or the derivatives. The numbers introduced range from 2 to 16. These methoxymethylphenyl groups were quantitatively transformed into chloromethylphenyl groups by the treatment with boron trichloride. The chloromethylphenyl functionalized polymers thus prepared were reacted with another anionic living polymers to result in the formation of well-defined heteroarm star polymers. The arm segments used were polystyrene, polyisoprene, poly(ethylene oxide), and poly(methacrylic acid), respectively. Furthermore, it was found that these functionalized polymers could be reacted quantitatively with functionalized anions derived from the corresponding 1,1-diphenylethylene derivatives. As the result, new functionalized polymers having a definite number of functional groups (phenol, glucose, perfluoroalkyl etc) at the chain ends or in the chains were obtained. Such functionalized polymers were observed to behave characteristically in solutions and in solid state (especially at the film surfaces).