Complex Macromolecular Architectures - Synthesis, Characterization, and Self-Assembly
Complex Macromolecular Architectures - Synthesis, Characterization, and Self-Assembly
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复杂的大分子结构 - 合成、表征和自组装
DOI:
10.1002/9780470825150.ch12
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Yu C
中科院分区:
文献类型:
--
作者:
Yu C
Ring‐opening metathesis polymerization (ROMP) of strained cyclophanedienes, initiated by ruthenium‐carbene complexes (Grubbs metathesis catalysts), gives phenylenevinylene polymers and copolymers. The as‐formed polymers have a backbone of alternatingcis‐ andtrans‐vinylene linkages. Irradiation with UV light results in an isomerization to an alltrans‐vinylene microstructure for the polymers. In these polymerizations the polymer chain ends remain active after complete consumption of the initial cyclophanediene monomer and block copolymers can be prepared by addition of further cyclophanediene. The molecular weight of the constituent blocks can be controlled by changing the monomer to initiator ratio. Extensive phase separation between the constituent blocks is observed in thin films of these polymers by atomic force microscopy.