Synthesis of well‐defined block copolymer composed of flexible amphiphilic poly(ethylene glycol) and hydrophobic liquid crystalline segments by living coordination polymerization of allene derivatives and its application to thin film with perpendicularly
Synthesis of well‐defined block copolymer composed of flexible amphiphilic poly(ethylene glycol) and hydrophobic liquid crystalline segments by living coordination polymerization of allene derivatives and its application to thin film with perpendicularly
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丙二烯衍生物活性配位聚合合成柔性两亲性聚乙二醇和疏水性液晶链段的明确嵌段共聚物及其在垂直薄膜上的应用
DOI：
10.1002/pol.20190165
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发表时间：
2020
影响因子：
3.4
通讯作者：
Iyoda Tomokazu
中科院分区：
文献类型：
--
作者：
Sakai Koyuki;Nishiyama Hiroki;Inagi Shinsuke;Tomita Ikuyoshi;Hibi Yusuke;Komura Motonori;Nose Keiji;Iyoda Tomokazu
以含π-烯丙基镍大分子引发剂为引发剂，通过活性配位聚合制备了一种由柔性极性聚乙二醇链段和低极性液晶聚合烯丙烯链段组成的嵌段共聚物。通过将其溶液旋涂在云母或硅片上制备了嵌段共聚物薄膜，通过差热、偏振光学显微镜、掠入射小角X射线散射、透射电子显微镜和原子力显微镜的测量，证明了该薄膜具有垂直取向的纳米柱状微相分离结构。
A block copolymer composed of a flexible polar poly(ethylene glycol) (PEG) and a less polar liquid crystalline poly(allene) segments is prepared by the living coordination polymerization of an allene derivative possessingtrans‐azobenzene‐containing mesogenic substituent by the use of a π‐allylnickel macroinitiator bearing PEG segment. The thin film of the block copolymer is prepared by the spin coating of its solution onto mica or silicon wafer which proves to possess perpendicularly oriented nanocylindrical microphase separated structures as supported by the differential calorimetric, polarized optical microscopic, grazing‐incidence small‐angle X‐ray scattering, transmission electron microscope, and atomic force microscope measurements.