Interfacial Staining of a Phase-Separated Block Copolymer with Ruthenium Tetroxide

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• 作者：Yishan Wang ; Neil Coombs ; Ayse Turak ; Zheng-Hong Lu ; Ian Manners ; Mitchell A. Winnik
• 刊名：Macromolecules
• 出版年：2007
• 出版时间：March 6, 2007
• 年：2007
• 卷：40
• 期：5
• 页码：1594 - 1597
• 全文大小：280K
• 年卷期：v.40,no.5(March 6, 2007)
• ISSN：1520-5835

文摘

We report on an unusual staining phenomenon of a diblock copolymer, poly(ferrocenylsilanes)-b-poly(dimethylsiloxanes) (PFS-b-PDMS). By a combination of transmission electron microscopy (TEM) andenergy dispersive X-ray (EDX) analysis, it is found that when a thin section of diblock copolymer is exposed toruthenium tetroxide vapor, the interfaces between the PFS and the PDMS microdomains are selectively stained.The effect appears to arise from a delicate competition between reactivity and diffusion. This observation broadensour knowledge of the staining behavior of diblock copolymers and provides a potential route to pattern orderednanoring arrays using diblock copolymers as a template.