Functional nanostructures, including arrays of nanowires or nanodots, can be fabricated using self-assembly of block copolymers as templates. The range of structures that can be formed is correspondingly limited by the range of morphologies that block copolymers easily form. This talk will present a selection of emerging strategies for constructing three-dimensional nanostructures whose shapes and symmetries go beyond those of the bulk equilibrium diblock copolymer phase diagram. Photo-thermal methods are used to control block copolymer ordering histories; ordered layers can be stacked to yield new lattice symmetries. This can also be performed in a responsive mode, where each self-assembled layer templates the ones that follow. Finally, blending allows the self-assembling film morphology itself to be responsive to underlying guides. Taken together, these new motifs represent a toolbox for constructing 3D nanostructures with symmetries and complexity beyond conventional self-assembled morphologies.

Nanostructures synthesized using non-native block copolymer morphologies

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.