Horizontally and vertically aligned helical conjugated polymers: Comprehensive formation mechanisms of helical fibrillar morphologies in orientation-controlled asymmetric reaction fields consisting of chiral nematic liquid crystals

2011 ◽  
Vol 2 (7) ◽  
pp. 1389 ◽  
Author(s):  
Taizo Mori ◽  
Mutsumasa Kyotani ◽  
Kazuo Akagi
Keyword(s):  
Liquid Crystals ◽  
Conjugated Polymers ◽  
Nematic Liquid Crystals ◽  
Formation Mechanisms ◽  
Asymmetric Reaction ◽  
Chiral Nematic ◽  
Vertically Aligned

scholarly journals Nanocomposites of Polyaniline and Cellulose Nanocrystals Prepared in Lyotropic Chiral Nematic Liquid Crystals

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Dawei Zhang ◽  
Lihong Zhang ◽  
Bingzhe Wang ◽  
Guangzhe Piao
Keyword(s):  
Liquid Crystals ◽  
Cellulose Nanocrystals ◽  
Nematic Liquid Crystals ◽  
Weight Ratio ◽  
Asymmetric Reaction ◽  
Reaction Field ◽  
Electron Microscopies ◽  
Chiral Nematic ◽  
Before And After

Stable lyotropic chiral nematic liquid crystals (N*-LCs) of cellulose nanocrystals (CNs) were prepared via hydrolysis using sulfuric acid. The lyotropic N*-LCs were used as an asymmetric reaction field to synthesize polyaniline (PANI) onto CNs by in situ polymerization. As a primary step, we examined the mesophase transition of the N*-LCs of CNs suspension before and after in situ polymerization of aniline (ANI) by polarizing optical microscopy. The structure of nanocomposites of PANI/CNs was investigated at a microscopic level using Fourier transform infrared spectroscopy and X-ray diffraction. Influence of the CNs-to-ANI ratio on the morphology of the nanocomposites was also investigated at macroscopic level by scanning electron and transmission electron microscopies. It is found that the weight ratio of CNs to aniline in the suspension significantly influenced the size of the PANI particles and interaction between CNs and PANI. Moreover, electrical properties of the obtained PANI/CNs films were studied using standard four-probe technique. It is expected that the lyotropic N*-LCs of CNs might be available for an asymmetric reaction field to produce novel composites of conjugated materials.

Synthesis of Vertically Aligned Helical Polyacetylene Films in Homeotropic Chiral Nematic Liquid Crystals

2001 ◽  
Vol 365 (1) ◽  
pp. 117-127 ◽  
Author(s):  
Guangzhe Piao ◽  
Toshihiro Otaka ◽  
Tetsuya Sato ◽  
Kazuo Akagi ◽  
Mutsumasa Kyotani
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic ◽  
Vertically Aligned

Helical Polyacetylene Synthesized under Asymmetric Reaction Field Constructed with Chiral Nematic Liquid Crystals

1999 ◽  
Vol 332 (1) ◽  
pp. 463-470 ◽  
Author(s):  
Kazuo Akagi ◽  
Isao Higuchi ◽  
Gangzhe Piao ◽  
Hideki Shirakawa ◽  
Mutsumasa Kyotani
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Asymmetric Reaction ◽  
Reaction Field ◽  
Chiral Nematic

scholarly journals Hysteresis and Fréedericksz thresholds for twisted states in chiral nematic liquid crystals: Minimum-energy path approach

2020 ◽  
pp. 115242
Author(s):  
Semen S. Tenishchev ◽  
Ivan M. Tambovtcev ◽  
Alexei D. Kiselev ◽  
Valery M. Uzdin
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Minimum Energy ◽  
Minimum Energy Path ◽  
Chiral Nematic

Circularly polarized luminescence in chiral nematic liquid crystals: generation and amplification

2021 ◽  
Author(s):  
Xuefeng Yang ◽  
Xue Jin ◽  
Tonghan Zhao ◽  
Pengfei Duan
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Excellent Performance ◽  
Circularly Polarized ◽  
Chiral Nematic ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Chiral nematic liquid crystals exhibit excellent performance in obtaining high luminescence dissymmetry factor of circularly polarized luminescence.

Nematicons routing through two types of disclination lines in chiral nematic liquid crystals

2014 ◽  
Vol 23 (04) ◽  
pp. 1450042 ◽  
Author(s):  
Michał Kwaśny ◽  
Urszula A. Laudyn ◽  
Katarzyna A. Rutkowska ◽  
Mirosław A. Karpierz
Keyword(s):  
Liquid Crystals ◽  
Wave Vector ◽  
Nematic Liquid Crystals ◽  
Input Beam ◽  
Oriented Sample ◽  
Beam Position ◽  
Chiral Nematic ◽  
Different Types ◽  
Optimal Beam ◽  
Beam Parameters

In this work, we study nematicons propagation at the disclination lines in a wedge-shaped planarly oriented sample. Using optimal beam parameters for light self-trapping and varying the input beam position and direction of the wave vector k with respect to the z-axis, we gain insight in the nematicons propagation in the highly disturbed area around two different types of disclination lines in chiral nematic.

Chlorin e6 13(N)-methylamide-15,17-dimethyl ester and its nickel complex as the inducers of chiral nematic liquid crystals

2021 ◽  
pp. 118330
Author(s):  
V.A. Burmistrov ◽  
I.V. Novikov ◽  
V.V. Aleksandriiskii ◽  
D.V. Belykh ◽  
O.M. Startseva ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nickel Complex ◽  
Nematic Liquid Crystals ◽  
Dimethyl Ester ◽  
Chlorin E6 ◽  
Chiral Nematic

scholarly journals The influence of pitch and birefringence on nematicon propagation at the disclination lines in chiral nematic liquid crystals

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Urszula Anna Laudyn ◽  
Michal Kwasny ◽  
Bartlomiej Klus
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic

scholarly journals Effect of UV curing conditions on polymerized tunable chiral nematic liquid crystals

2014 ◽  
Author(s):  
Mohammad Mohammadimasoudi ◽  
Jeroen Beeckman ◽  
Kristiaan Neyts
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Uv Curing ◽  
Curing Conditions ◽  
Chiral Nematic
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