Phenylenevinylene Block Copolymers via Ring-Opening Metathesis Polymerization
Phenylenevinylene Block Copolymers via Ring-Opening Metathesis Polymerization
复制标题
通过开环易位聚合制备苯乙撑嵌段共聚物
DOI：
10.1002/marc.200900345
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发表时间：
2009
影响因子：
4.6
通讯作者：
Yu C
中科院分区：
文献类型：
--
作者：
Yu C
含1,4 -和1,3 -苯乙烯重复单元的全共轭嵌段共聚物可以由络合物（Grubbs复分解催化剂）引发的应变环苯二烯的顺序开环复分解聚合制备。通过改变催化剂与单体的比例和由所采用的单体比例独立定制的嵌段共聚物的体积分数，可以严格控制组成嵌段的分子量。原子力显微镜观察到，在这些聚合物的薄膜中，组成块之间存在广泛的相分离，并且在这些材料的光致发光中，可以看到含有1,4 -和1,3 -苯乙烯单元的块之间存在有效的能量转移。
Fully conjugated block copolymers containing 1,4‐ and 1,3‐phenylenevinylene repeating units can be prepared by the sequential ring opening metathesis polymerization of strained cyclophanedienes, initiated by ruthenium carbene complexes (Grubbs metathesis catalysts). The molecular weight of the constituent blocks can be tightly controlled by changing the catalyst to monomer ratio and the volume fraction of the block copolymers independently tailored by the ratio of the monomers employed. Extensive phase separation between the constituent blocks is observed in thin films of these polymers by atomic force microscopy and efficient energy transfer between blocks containing 1,4‐ and 1,3‐phenylenevinylene units can be seen in the photoluminescence of these materials.