一锅法顺序合成（超支化聚乙烯）-b-（线性聚酮）嵌段聚合物的配体交换策略。
A ligand exchange strategy for one-pot sequential synthesis of (hyperbranched polyethylene)-b-(linear polyketone) block polymers.
机构信息
Bharti School of Engineering, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
出版信息
Chem Commun (Camb). 2012 Aug 18;48(64):7940-2. doi: 10.1039/c2cc33779g. Epub 2012 Jul 5.
PMID:22763487
Abstract
Upon the addition of an equimolar amount of 2,2'-bipyridine, a cationic Pd-diimine complex capable of facilitating "living" ethylene polymerization is switched to catalyze "living" alternating copolymerization of 4-tertbutylstyrene and CO. This unique chemistry is thus employed to synthesize a range of well-defined treelike (hyperbranched polyethylene)-b-(linear polyketone) block polymers.
摘要
当加入等摩尔量的 2,2'-联吡啶时，能够促进“活性”乙烯聚合的阳离子 Pd-二亚胺配合物被切换为催化 4-叔丁基苯乙烯和 CO 的“活性”交替共聚。这种独特的化学性质被用来合成一系列结构明确的树状（超支化聚乙烯）-b-（线性聚酮）嵌段聚合物。
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