Substrate‐induced lateral micro‐phase separation of a diblock copolymer

作者：Joachim Pius Spatz, Sergei S. Sheiko, Martin Nue Møller · 发表于：Advanced Materials · 年份：1996 · DOI：10.1002/adma.19960080614 · 被引用次数：406 · 研究领域：Block Copolymer Self-Assembly、Polymer Surface Interaction Studies、Fluid Dynamics and Thin Films

“Ultra‐monomolecular” films of block copolymers, i.e., films whose surface concentration is so low that the substrate cannot be covered homogeneously without affecting the structure of the macromolecules very strongly, have been studied using tapping‐ and friction‐mode SFM. Two‐dimensional phase separation yielding an ordered pattern of polystyrene and poly‐2‐vinylpyridine surface domains is observed. SFM is shown to distinguish topological features and also to discriminate between chemically different components. The surface features generated and the formation mechanisms involved are discussed.