作者:Carl E. Wagner、Andrew A. Rodriguez、Kenneth J. Shea
DOI:10.1021/ma050152k
日期:2005.8.1
of controlled molecular weight and low PDI were synthesized in high yield by the polyhomologation reaction of dimethylsulfoxonium methylide (1) with triallylborane (2). Following polymerization, propionic acid or trimethylamine N-oxide dihydrate (TAO) was used to afford α-vinyl-ω-methyl or α-vinyl-ω-hydroxy end-functionalized polymethylene, respectively. Controllable molecular weights up to 13 kDa were
通过二甲基亚砜基亚甲基(1)与三烯丙基硼烷(2)的多同源反应,高收率合成了可控制分子量和低PDI的线性α-烯烃。聚合后,丙酸或三甲胺N用二水合氧化物(TAO)分别提供α-乙烯基-ω-甲基或α-乙烯基-ω-羟基末端官能化的聚亚甲基。通过改变初始单体/催化剂的比例,可获得高达13 kDa的可控制分子量,并且所得聚合物具有非常窄的多分散性(PDI <1.08)。尽管聚合物的收率通常很高,但是在α-乙烯基-ω-甲基样品中观察到了氧化副产物的量。然而,这些氧化的副产物可用于低分子量的样品(C去除Ñ ≤36)。