Amorphous Diblock Copolymers with a High Organometallic Block Volume Fraction: Synthesis, Characterization and Self-Assembly of Polystyrene-block-Poly(ferrocenylethylmethylsilane) in the Bulk S

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• 作者：Jean-Charles Eloi ; David A. Rider ; Jia-Yu Wang ; Thomas P. Russell ; Ian Manners
• 刊名：Macromolecules
• 出版年：2008
• 出版时间：December 9, 2008
• 年：2008
• 卷：41
• 期：23
• 页码：9474-9479
• 全文大小：207K
• 年卷期：v.41,no.23(December 9, 2008)
• ISSN：1520-5835

文摘

The preparation of polystyrene-b-poly(ferrocenylethylmethylsilane) diblock copolymers (PS-b-PFEMS) with a high volume fraction of the organometallic block (_PFEMS = 0.69−0.87) has been achieved via the sequential living anionic polymerization of styrene and ethylmethylsila[1]ferrocenophane. High molecular weights (M_n = 50000 to 250000 g/mol) and narrow molecular weight distributions (PDI = 1.05−1.17) were achieved. As both of the blocks are amorphous, the resulting diblock copolymers undergo predictable self-assembly in the bulk and well-ordered microdomains are reported. The data described complement previous results on analogous block copolymers with a low PFEMS volume fraction and a morphology diagram for PS-b-PFEMS is described.