Chiral self-assembly of cellulose nanocrystals is driven by crystallite bundles
| Autor: | Thomas G. Parton, Richard M. Parker, Gea T. van de Kerkhof, Aurimas Narkevicius, Johannes S. Haataja, Bruno Frka-Petesic, Silvia Vignolini |
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| Přispěvatelé: | Parton, Thomas G [0000-0001-7153-1042], Parker, Richard M [0000-0002-4096-9161], Haataja, Johannes S [0000-0002-4523-4199], Frka-Petesic, Bruno [0000-0001-5002-5685], Vignolini, Silvia [0000-0003-0664-1418], Apollo - University of Cambridge Repository, Parton, Thomas [0000-0001-7153-1042], Parker, Richard [0000-0002-4096-9161], Haataja, Johannes [0000-0002-4523-4199] |
| Rok vydání: | 2022 |
| Předmět: |
639/301/54/989
147/135 Optics and Photonics Multidisciplinary 147/3 123 organic chemicals 639/301/923/919 article General Physics and Astronomy FOS: Physical sciences General Chemistry 639/301/923/916 Condensed Matter - Soft Condensed Matter General Biochemistry Genetics and Molecular Biology 639/301/923/966 Liquid Crystals Condensed Matter::Soft Condensed Matter 639/624/399/1022 Suspensions Soft Condensed Matter (cond-mat.soft) Nanoparticles 128 Cellulose 147/143 |
| Zdroj: | Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | 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. 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. |
| Databáze: | OpenAIRE |
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