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Cellulose photonic pigments

Author

Listed:
  • Richard M. Parker

    (University of Cambridge)

  • Tianheng H. Zhao

    (University of Cambridge)

  • Bruno Frka-Petesic

    (University of Cambridge)

  • Silvia Vignolini

    (University of Cambridge)

Abstract

When pursuing sustainable approaches to fabricate photonic structures, nature can be used as a source of inspiration for both the nanoarchitecture and the constituent materials. Although several biomaterials have been promised as suitable candidates for photonic materials and pigments, their fabrication processes have been limited to the small to medium-scale production of films. Here, by employing a substrate-free process, structurally coloured microparticles are produced via the confined self-assembly of a cholesteric cellulose nanocrystal (CNC) suspension within emulsified microdroplets. Upon drying, the droplets undergo multiple buckling events, which allow for greater contraction of the nanostructure than predicted for a spherical geometry. This buckling, combined with a solvent or thermal post-treatment, enables the production of dispersions of vibrant red, green, and blue cellulose photonic pigments. The hierarchical structure of these pigments enables the deposition of coatings with angular independent colour, offering a consistent visual appearance across a wide range of viewing angles.

Suggested Citation

  • Richard M. Parker & Tianheng H. Zhao & Bruno Frka-Petesic & Silvia Vignolini, 2022. "Cellulose photonic pigments," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31079-9
    DOI: 10.1038/s41467-022-31079-9
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    References listed on IDEAS

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    1. Yunfeng Li & Jeffrey Jun-Yan Suen & Elisabeth Prince & Egor M. Larin & Anna Klinkova & Héloïse Thérien-Aubin & Shoujun Zhu & Bai Yang & Amr S. Helmy & Oleg D. Lavrentovich & Eugenia Kumacheva, 2016. "Colloidal cholesteric liquid crystal in spherical confinement," Nature Communications, Nature, vol. 7(1), pages 1-11, November.
    2. Junwei Wang & Chrameh Fru Mbah & Thomas Przybilla & Benjamin Apeleo Zubiri & Erdmann Spiecker & Michael Engel & Nicolas Vogel, 2018. "Magic number colloidal clusters as minimum free energy structures," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
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    Cited by:

    1. Jinrong Liu & Mathias Nero & Kjell Jansson & Tom Willhammar & Mika H. Sipponen, 2023. "Photonic crystals with rainbow colors by centrifugation-assisted assembly of colloidal lignin nanoparticles," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Xu Ma & Yucen Han & Yan-Song Zhang & Yong Geng & Apala Majumdar & Jan P. F. Lagerwall, 2024. "Tunable templating of photonic microparticles via liquid crystal order-guided adsorption of amphiphilic polymers in emulsions," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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