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发帖数: 9 | 1 Chain Walking produces Branches.
Zhibin Guan, Dupont CR&D,
Science, 283, 2059, 1999
a palladium-diimine catalyst catalyze ethylene polymerization.
利用late transition metal的b-elimination, hydride addition 实现chain walking
process.
通过调节气压改变的chain-walking 和polymer chain propagation
的速度从而实现tuning
polyethylene topology with pressure which can form linear PE to Dendritic PE.
It is very promising to make dendrimer by simple conventional polymerizaiton
method instead of tedious multi-step synthesis. |
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