Synthesis and Bulk Self-Assembly of ABC Star Terpolymers with a Polyferrocenylsilane Metalloblock

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• 作者：Adam Nunns ; Caroline A. Ross ; Ian Manners
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：April 9, 2013
• 年：2013
• 卷：46
• 期：7
• 页码：2628-2635
• 全文大小：449K
• 年卷期：v.46,no.7(April 9, 2013)
• ISSN：1520-5835

文摘

The synthesis, characterization, and self-assembly of a range of ABC star polymers with arms of polyisoprene, poly(ferrocenylethylmethylsilane), and polystyrene is reported. A library of azide-functionalized polyisoprene and poly(ferrocenylethylmethylsilane) homopolymers were prepared by living anionic polymerization. Polystyrene was synthesized by living anionic polymerization and quenched with 3-triisopropylsilylethynyl-5-trimethylsilylethynylbenzaldehyde, yielding 鈥渃ore-functionalized鈥?polystyrene with two different alkyne units. The azide-functionalized monomers were sequentially attached to core-functionalized polystyrene via copper(I)-catalyzed azide鈥揳lkyne cycloaddition reactions, giving polystyrene鈥損olyisoprene鈥損oly(ferrocenylethylmethylsilane) ABC star terpolymers with different compositions and narrow dispersities. Additionally, a chlorosilane route was employed as an alternative means of synthesis. Bulk films of each star terpolymer were prepared, and their self-assembly was analyzed by transmission electron microscopy. The formation of a diverse range of morphologies was observed, including lamellae with alternating cylinders and two different Archimedean tiling patterns.