Dipole-Driven Self-Organization of Liquid-Crystalline N-Heteroacene Derivatives Showing Redox-Properties

2017 ◽  
Vol 2 (1) ◽  
pp. 300-303 ◽  
Author(s):  
Kyosuke Isoda ◽  
Ippei Kawamoto ◽  
Atsushi Seki ◽  
Masahiro Funahashi ◽  
Makoto Tadokoro
Keyword(s):  
Liquid Crystalline ◽  
Redox Properties ◽  
Self Organization

scholarly journals Travelling colourful patterns in self-organized cellulose-based liquid crystalline structures

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Pedro E. S. Silva ◽  
Ricardo Chagas ◽  
Susete N. Fernandes ◽  
Pawel Pieranski ◽  
Robin L. B. Selinger ◽  
...  
Keyword(s):  
Simple Model ◽  
Temporal Variation ◽  
Liquid Crystalline ◽  
Diffusion Mechanism ◽  
Reaction Diffusion ◽  
Self Organization ◽  
Spatial And Temporal Variation ◽  
Living Matter ◽  
Equilibrium Conditions ◽  
Self Organized

AbstractCellulose-based systems are useful for many applications. However, the issue of self-organization under non-equilibrium conditions, which is ubiquitous in living matter, has scarcely been addressed in cellulose-based materials. Here, we show that quasi-2D preparations of a lyotropic cellulose-based cholesteric mesophase display travelling colourful patterns, which are generated by a chemical reaction-diffusion mechanism being simultaneous with the evaporation of solvents at the boundaries. These patterns involve spatial and temporal variation in the amplitude and sign of the helix´s pitch. We propose a simple model, based on a reaction-diffusion mechanism, which simulates the observed spatiotemporal colour behaviour.

Structures and properties of side-chain liquid crystalline polynorbornenes containing an amide group: hydrogen bonding interactions and spacer length effects

2020 ◽  
Vol 11 (29) ◽  
pp. 4749-4759
Author(s):  
Dong Shi ◽  
Wen-Ying Chang ◽  
Xiang-Kui Ren ◽  
Shuang Yang ◽  
Er-Qiang Chen
Keyword(s):  
Mechanical Properties ◽  
Hydrogen Bond ◽  
Liquid Crystalline ◽  
Amide Group ◽  
Self Organization ◽  
Side Chain ◽  
Hydrogen Bond Interaction ◽  
Spacer Length ◽  
Hydrogen Bonding Interactions ◽  
Structures And Properties

Side-chain liquid crystalline polynorbornenes based on benzanilide mesogens exhibit rich self-organization behaviours and enhanced mechanical properties owing to the lateral hydrogen bond interaction that can be tuned by the spacer length.

scholarly journals Influence of the Al/Ge Ratio on the Structure and Self-Organization of Anisometric Imogolite Nanotubes

Crystals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1094
Author(s):  
Erwan Paineau ◽  
Pascale Launois
Keyword(s):  
Aspect Ratio ◽  
Liquid Crystalline ◽  
Functional Materials ◽  
Slight Modification ◽  
Self Organization ◽  
Molar Ratio ◽  
Stimuli Responsive ◽  
Synthesis Conditions ◽  
Colloidal Properties ◽  
R Ratio

Synthetic imogolite-like nanotubes (INT) with well-defined diameters represent a considerable opportunity for the development of advanced functional materials. Recent progress has made it possible to increase their aspect ratio and unique self-organization properties were evidenced. We suggest that slight modification of the synthesis conditions may drastically affect the resulting liquid-crystalline properties. In this work, we investigate how the precursor’s [Al]/[Ge] molar ratio (R’) impacts the morphology and the colloidal properties of aluminogermanate INTs by combining a multi-scale characterization. While only double-walled nanotubes are found for R’ ≥ 1.8, the presence of single-walled nanotubes occurs when the ratio is lowered. Except for the lowest R’ ratio investigated (R’ = 0.66), all synthetic products present one-dimensional shapes with a high aspect ratio. Small-angle X-ray scattering experiments allow us to comprehensively investigate the colloidal properties of the final products. Our results reveal that a liquid-crystalline hexagonal columnar phase is detected down to R’ = 1.33 and that it turns into a nematic arrested phase for R’ = 0.90. These results could be useful for the development of novel stimuli-responsive nanocomposites based-on synthetic imogolite nanotubes.

scholarly journals Directing Liquid Crystalline Self-Organization of Rodlike Particles through Tunable Attractive Single Tips

2019 ◽  
Vol 122 (12) ◽  
Author(s):  
Andrii Repula ◽  
Mariana Oshima Menegon ◽  
Cheng Wu ◽  
Paul van der Schoot ◽  
Eric Grelet
Keyword(s):  
Liquid Crystalline ◽  
Self Organization ◽  
Rodlike Particles

π-Conjugated Oligothiophene-Based Polycatenar Liquid Crystals: Self-Organization and Photoconductive, Luminescent, and Redox Properties

2009 ◽  
Vol 19 (3) ◽  
pp. 411-419 ◽  
Author(s):  
Takuma Yasuda ◽  
Hirotaka Ooi ◽  
Jun Morita ◽  
Yusuke Akama ◽  
Kiyoshi Minoura ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Redox Properties ◽  
Self Organization

Self-organization behaviours of hemiphasmidic side-chain liquid-crystalline polymers with different spacer lengths

2017 ◽  
Vol 41 (15) ◽  
pp. 7553-7561 ◽  
Author(s):  
Xiwen Yang ◽  
Zheng Xiang ◽  
Sheng Chen ◽  
Hang Luo ◽  
Dou Zhang ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Self Organization ◽  
Side Chain ◽  
Crystalline Polymers

The influence of flexible spacers on unusual self-organization behaviours of side-chain liquid-crystalline polymers containing biphenyl hemiphasmidic mesogens.

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