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Ordered Nanostructures in Thin Films of Precise Ion-Containing Multiblock Copolymers by Jinseok Park; Anne Staiger; Stefan Mecking; Karen I. Winey is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Ordered Nanostructures in Thin Films of Precise Ion-Containing Multiblock Copolymers about?

We demonstrate that ionic functionality in a multiblock architecture produces highly ordered and sub-3 nm nanostructures in thin films, including bicontinuous double gyroids. At 40 °C, precise ion-containing multiblock copolymers of poly(ethylene--lithium sulfosuccinate ester) (PESLi, = 12 or 18) exhibit layered ionic assemblies parallel to the substrate. These ionic layers are separated by crystalline polyethylene blocks with the polymer backbones perpendicular to the substrate. Notably, above the melting temperature ( ) of the polyethylene blocks, layered PES18Li thin films transform into a highly oriented double-gyroid morphology with the (211) plane ( = 2.5 nm) aligned parallel to the substrate. The cubic lattice parameter ( ) of the double gyroid is 6.1 nm. Upon heating further above , the double-gyroid morphology in PES18Li transitions into hexagonally packed cylinders with cylinders parallel to the substrate. These layered, double-gyroid, and cylinder nanostructures form epitaxially and spontaneously without secondary treatment, such as interfacial layers and solvent vapor annealing. When the film thickness is less than ∼3 , double gyroids and cylinders coexist due to the in

Who reads Ordered Nanostructures in Thin Films of Precise Ion-Containing Multiblock Copolymers?

Author

Jinseok Park; Anne Staiger; Stefan Mecking; Karen I. Winey

Publisher

American Chemical Society (ACS)

Published

2022

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Physical Sciences)