Effect of thermal treatments on chiral nematic cellulose nanocrystal films.
AuthorsGuidetti, Giulia; email: firstname.lastname@example.org
Frka-Petesic, Bruno; email: email@example.com
Dumanli, Ahu G; email: firstname.lastname@example.org
Hamad, Wadood Y; email: email@example.com
Vignolini, Silvia; email: firstname.lastname@example.org
MetadataShow full item record
AbstractThe ability to manipulate the optical appearance of materials is essential in virtually all products and areas of technology. Structurally coloured chiral nematic cellulose nanocrystal (CNC) films proved to be an excellent platform to design optical appearance, as their response can be moulded by organising them in hierarchical architectures. Here, we study how thermal treatments influence the optical appearance of structurally coloured CNC films. We demonstrate that the CNCs helicoidal architecture and the chiral optical response can be maintained up to 250 °C after base treatment and cross-linking with glutaraldehyde, while, alternatively, an exposure to vacuum allows for the helicoidal arrangement to be further preserved up to 900 °C, thus producing aromatic chiral carbon. The ability to retain the helicoidal arrangement, and thus the visual appearance, in CNC films up to 250 °C is highly desirable for high temperature colour-based industrial applications and for passive colorimetric heat sensors. Similarly, the production of chiral carbon provides a new type of conductive carbon for electrochemical applications. [Abstract copyright: Copyright © 2021 Elsevier Ltd. All rights reserved.]
CitationCarbohydrate polymers, volume 272, page 118404
DescriptionFrom PubMed via Jisc Publications Router
History: received 2021-04-10, revised 2021-06-21, accepted 2021-07-05
Publication status: ppublish
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