The Self-Assembly of Cellulose Nanocrystals: Hierarchical Design of Visual Appearance.
Advanced materials (Deerfield Beach, Fla.)
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Parker, R., Guidetti, G., Williams, C., Zhao, T., Narkevicius, A., Vignolini, S., & Frka-Petesic, B. (2018). The Self-Assembly of Cellulose Nanocrystals: Hierarchical Design of Visual Appearance.. Advanced materials (Deerfield Beach, Fla.), 30 (19), e1704477. https://doi.org/10.1002/adma.201704477
By controlling the interaction of biological building blocks at the nanoscale, natural photonic nanostructures have been optimized via evolution to produce intense coloration. Inspired by such biological nanostructures, the possibility to design the visual appearance of a material by guiding the hierarchical self-assembly of its constituent components, ideally using natural materials, is an attractive route for rationally-designed, sustainable manufacturing. Within the large variety of biological building blocks, cellulose nanocrystals are one of the most promising bio-sourced materials, primarily for their abundance, biocompatibility and ability to readily organize into photonic structures. Here, we review the mechanisms underlying the formation of iridescent, vividly-colored materials from colloidal liquid crystal suspensions of cellulose nanocrystals and report recent advances in structural control over the hierarchical assembly process as a toolbox for the design of sophisticated optical materials.
ECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (639088)
External DOI: https://doi.org/10.1002/adma.201704477
This record's URL: https://www.repository.cam.ac.uk/handle/1810/275165