期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 41, 期 4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201900598
关键词
bimolecular ring-closure method; cyclic polymers; polynorbornene; ring-opening metathesis polymerization; self-accelerating double strain-promoted azide-alkyne click reaction
资金
- National Science Foundation of China [21622406, 21871273]
- National Key Research and Development Program of China [2019YFA0210400]
An efficient bimolecular ring-closure method is developed to prepare the well-defined cyclic polynorbornenes by combining the living ring-opening metathesis polymerization (ROMP) with the self-accelerating double strain-promoted azide-alkyne cycloaddition (DSPAAC) reaction. In this method, ROMP is used to synthesize the well-defined linear polynorbornenes with both azide terminals by virtue of a N-hydroxysuccinimide-ester-functionalized Grubbs initiator following the modification of polymer end groups. DSPAAC click reaction is then used to ring-close the linear polymer precursors and prepare the corresponding well-defined cyclic polynorbornenes using the sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD) as small linkers. The self-accelerating DSPAAC ring-closing reaction facilitates this method to efficiently prepare pure cyclic polynorbornenes in the presence of a molar excess of DIBOD small linkers to the linear polynorbornene precursors. This is the first report to prepare well-defined polynorbornenes with cyclic topology based on the ring-closure strategy for cyclic polymers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据