Multi-length scale materials possessing structure spanning the nano- to macro-scale can only genuinely be achieved through the integration of bottom-up self-assembly of molecular amphiphiles with top-down additive manufacturing such as 3D printing. To date, only a few reports describing the 3D printing of self-organizing molecules (supramolecular organization) have appeared. To address this deficiency, in this presentation we report the synthesis of self-assembling feedstocks applicable to vat-photopolymerization 3D printing. Visible light printing of self-assembled multicomponent amphiphilic complex fluids containing both a macro-monomer and metal ions readily yield fabrication of nanostructured metal (plasmonic) nanoparticle hydrogels that undergo reversible shape transformation upon varying hydration levels, thus producing 4D printed composites. The discrete shape states achieved are spatially non-uniform (i.e., not simply uniform volumetric expansion and contraction) making them ideal candidates for further development as shape-shifting nanocomposites.

4D printed nanoparticle hydrogel composites

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.