Biomimetic confined self-assembly of chitin nanocrystals. Liu, P., Wang, J., Qi, H., Koddenberg, T., Xu, D., Liu, S., & Zhang, K. Nano Today, 43:101420, April, 2022. ![Biomimetic confined self-assembly of chitin nanocrystals [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex It is a longstanding challenge to aptly describe the natural assembly process of chitin Bouligand organi zation as well as biomimetic construct these position-dependent structures with the isolated chitin na nodomains. Here, we report a fixed-boundary evaporation-induced self-assembly (FB-EISA) modality using chitin nanocrystals (ChNCs) in the capillaries, where the generation of continuous and ordered anisotropic phase relies on the growth of phase boundary towards the opposite direction of water evaporation. Distinct from the previous EISA modalities with the moving evaporation interface, the pinned air-liquid interface at the end of capillaries in a confined environment acts as the evaporation interface and initial deposition site of ChNCs simultaneously. During the whole self-assembly process via successive evaporation, the genera tion of droplets-like ChNCs clusters known as tactoids is suppressed. Therefore, continuous birefringent multi-layers as nested multiple paraboloid structures of ChNCs with a density gradient are gradually generated, before cylindrical tubes are formed finally. The FB-EISA process can be accelerated by heat and maintains stable regardless of vibration or different capillary opening directions relative to gravity direc tion. This FB-EISA modality in confined geometry allows rapid formation of ChNCs-based photonics-quality structure of larger length scales and enables us to deepen our understanding of the natural self-assembly process in diverse biological species.
@article{liu_biomimetic_2022,
title = {Biomimetic confined self-assembly of chitin nanocrystals},
volume = {43},
issn = {17480132},
url = {https://linkinghub.elsevier.com/retrieve/pii/S1748013222000470},
doi = {10.1016/j.nantod.2022.101420},
abstract = {It is a longstanding challenge to aptly describe the natural assembly process of chitin Bouligand organi zation as well as biomimetic construct these position-dependent structures with the isolated chitin na nodomains. Here, we report a fixed-boundary evaporation-induced self-assembly (FB-EISA) modality using chitin nanocrystals (ChNCs) in the capillaries, where the generation of continuous and ordered anisotropic phase relies on the growth of phase boundary towards the opposite direction of water evaporation. Distinct from the previous EISA modalities with the moving evaporation interface, the pinned air-liquid interface at the end of capillaries in a confined environment acts as the evaporation interface and initial deposition site of ChNCs simultaneously. During the whole self-assembly process via successive evaporation, the genera tion of droplets-like ChNCs clusters known as tactoids is suppressed. Therefore, continuous birefringent multi-layers as nested multiple paraboloid structures of ChNCs with a density gradient are gradually generated, before cylindrical tubes are formed finally. The FB-EISA process can be accelerated by heat and maintains stable regardless of vibration or different capillary opening directions relative to gravity direc tion. This FB-EISA modality in confined geometry allows rapid formation of ChNCs-based photonics-quality structure of larger length scales and enables us to deepen our understanding of the natural self-assembly process in diverse biological species.},
language = {en},
urldate = {2022-02-02},
journal = {Nano Today},
author = {Liu, Peiwen and Wang, Jiaxiu and Qi, Houjuan and Koddenberg, Tim and Xu, Dan and Liu, Siyuan and Zhang, Kai},
month = apr,
year = {2022},
pages = {101420},
file = {Liu et al. - 2022 - Biomimetic confined self-assembly of chitin nanocr.pdf:C\:\\Users\\Eva\\Zotero\\storage\\VRXG2QVP\\Liu et al. - 2022 - Biomimetic confined self-assembly of chitin nanocr.pdf:application/pdf},
}
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Here, we report a fixed-boundary evaporation-induced self-assembly (FB-EISA) modality using chitin nanocrystals (ChNCs) in the capillaries, where the generation of continuous and ordered anisotropic phase relies on the growth of phase boundary towards the opposite direction of water evaporation. Distinct from the previous EISA modalities with the moving evaporation interface, the pinned air-liquid interface at the end of capillaries in a confined environment acts as the evaporation interface and initial deposition site of ChNCs simultaneously. During the whole self-assembly process via successive evaporation, the genera tion of droplets-like ChNCs clusters known as tactoids is suppressed. Therefore, continuous birefringent multi-layers as nested multiple paraboloid structures of ChNCs with a density gradient are gradually generated, before cylindrical tubes are formed finally. 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