Chiral Self-Assembly of Cellulose Nanocrystals is Driven by Crystallite Bundles


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Authors
Kerkhof, Gea T van de 
Narkevicius, Aurimas 
Abstract

The transfer of chirality across length-scales is an intriguing and universal natural phenomenon. However, connecting the properties of individual building blocks to the emergent features of their resulting large-scale structure remains a challenge. In this work, we investigate the origins of mesophase chirality in cellulose nanocrystal suspensions, whose self-assembly into chiral photonic films has attracted significant interest. By correlating the ensemble behaviour in suspensions and films with a quantitative morphological analysis of the individual nanoparticles, we reveal an inverse relationship between the cholesteric pitch and the abundance of laterally-bound composite particles. These bundles thus act as colloidal chiral dopants, analogous to those used in molecular liquid crystals, providing the missing link in the hierarchical transfer of chirality from the molecular to the colloidal scale.

Description

Funder: Emil Aaltosen Säätiö (Emil Aaltonen Foundation); doi: https://doi.org/10.13039/501100004756


Funder: Philip Leverhulme Prize [PLP-2019-271]; Lord Lewis Research Studentship in Chemistry.

Keywords
Article, /639/301/923/966, /639/301/923/916, /639/301/923/919, /639/624/399/1022, /639/301/54/989, /147/143, /147/3, /147/135, /128, /123, article
Journal Title
Nature Communications
Conference Name
Journal ISSN
2041-1723
2041-1723
Volume Title
13
Publisher
Nature Research
Sponsorship
EPSRC (1948659)
Engineering and Physical Sciences Research Council (1948659)
Engineering and Physical Sciences Research Council (EP/L015978/1)
Engineering and Physical Sciences Research Council (EP/N509620/1)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (722842)
Engineering and Physical Sciences Research Council (EP/P030467/1)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (893136)
European Commission Horizon 2020 (H2020) ERC (101001637)
BBSRC (BB/V00364X/1)