Funktionsmaterialien mit Cellulose‐basierten Flüssigkristall‐Templaten

Giese, Michael; Blusch, Lina K.; Khan, Mostofa K.; MacLachlan, Mark J.

doi:10.1002/ange.201407141

Cited by 12 publications

(2 citation statements)

References 219 publications

(231 reference statements)

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“…The nematic ordering of CNCs has also been used as a sacrificial template to create different materials, such as resins or inorganic materials, with a chiral nematic nanostructure. Much of this work has been conducted and summarized by MacLachlan and co‐workers [197] . These materials show photonic behaviors that can be used for optical applications.…”

Section: Bottom‐up Assembly By Controlling Nanocellulose Interactionsmentioning

confidence: 99%

The Colloidal Properties of Nanocellulose

et al. 2023

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Nanocelluloses are anisotropic nanoparticles of semicrystalline assemblies of glucan polymers. They have great potential as renewable building blocks in the materials platform of a more sustainable society. As a result, the research on nanocellulose has grown exponentially over the last decades. To fully utilize the properties of nanocelluloses, a fundamental understanding of their colloidal behavior is necessary. As elongated particles with dimensions in a critical nanosize range, their colloidal properties are complex, with several behaviors not covered by classical theories. In this comprehensive Review, we describe the most prominent colloidal behaviors of nanocellulose by combining experimental data and theoretical descriptions. We discuss the preparation and characterization of nanocellulose dispersions, how they form networks at low concentrations, how classical theories cannot describe their behavior, and how they interact with other colloids. We then show examples of how scientists can use this fundamental knowledge to control the assembly of nanocellulose into new materials with exceptional properties. We hope aspiring and established researchers will use this Review as a guide.

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Section: Bottom‐up Assembly By Controlling Nanocellulose Interactionsmentioning

confidence: 99%

The Colloidal Properties of Nanocellulose

et al. 2023

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“…Despite the numerous studies of chiral nematic CNC films and chiral nematic materials constructed using CNCs as a template, other types of ordered structures for CNCs are underexplored. It was reported that an increase of the CNC concentration makes the chiral nematic structure transform into a nonchiral birefringent structure in an aqueous dispersion, but the structure and optical properties of this phase have not been studied in detail in solution or films dried from such high CNC concentrations.…”

Section: Methodsmentioning

confidence: 99%

Transparent Depolarizing Organic and Inorganic Films for Optics and Sensors

2017

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Fabrication of novel organic and inorganic depolarizing films derived from quasinematic cellulose nanocrystal (CNC) organization is demonstrated. These films convert linearly polarized and circularly polarized light into unpolarized light over the entire visible region. Patterning of the quasinematic CNCs on top of a chiral nematic film gives latent images that are revealed only upon observation through the circularly polarizing filters.

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Structural Transition in Liquid Crystal Bubbles Generated from Fluidic Nanocellulose Colloids

et al. 2017

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The structural transition in micrometer-sized liquid crystal bubbles (LCBs) derived from rod-like cellulose nanocrystals (CNCs) was studied. The CNC-based LCBs were suspended in nematic or chiral nematic liquid-crystalline CNCs,w hich generated topological defects and distinct birefringent textures around them. The ordering and structure of the LCBs shifted from anematic to chiral nematic arrangement as water evaporation progressed. These packed LCBs exhibited as pecific photonic cross-communication property that is due to ac ombination of Bragg reflection and bubble curvature and size.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Funktionsmaterialien mit Cellulose‐basierten Flüssigkristall‐Templaten

Cited by 12 publications

References 219 publications

The Colloidal Properties of Nanocellulose

The Colloidal Properties of Nanocellulose

Transparent Depolarizing Organic and Inorganic Films for Optics and Sensors

Structural Transition in Liquid Crystal Bubbles Generated from Fluidic Nanocellulose Colloids

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