Synthesis and self-organization of azobenzene containing hemiphasmidic side-chain liquid-crystalline polymers with different spacer lengths

2016 ◽  
Vol 7 (2) ◽  
pp. 462-473 ◽  
Author(s):  
Yan-Shuang Xu ◽  
Dong Shi ◽  
Jun Gu ◽  
Zhen Lei ◽  
He-Lou Xie ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Self Organization ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Spacer Length ◽  
Crystalline Polymers

Hemiphasmidic side-chain liquid-crystal polymers form different columnar phases depending on the spacer lengthnand temperatureT.

Self-organization of cholesterol-side-chain liquid crystalline polymers by tailoring the main chain structure and flexible spacer length

2019 ◽  
Vol 43 (14) ◽  
pp. 5429-5440 ◽  
Author(s):  
Xiwen Yang ◽  
Shaonan Chen ◽  
Hang Luo ◽  
Haoran Xu ◽  
Sheng Chen
Keyword(s):  
Liquid Crystalline ◽  
Main Chain ◽  
Chain Structure ◽  
Self Organization ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Spacer Length ◽  
Crystalline Polymers ◽  
Smectic A ◽  
Flexible Spacer

Liquid crystal polymers with cholesterol side-chains formed different smectic A phases under the influence of the main-chain structure and flexible spacer length.

scholarly journals Engineering Achiral Liquid Crystalline Polymers for Chiral Self-Recovery

2021 ◽  
Vol 22 (21) ◽  
pp. 11980
Author(s):  
Tengfei Miao ◽  
Xiaoxiao Cheng ◽  
Yilin Qian ◽  
Yaling Zhuang ◽  
Wei Zhang
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Uv Light ◽  
Helical Structure ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Polymeric Liquid ◽  
Crystalline Polymers ◽  
Liquid Crystal System ◽  
And Storage

Flexible construction of permanently stored supramolecular chirality with stimulus-responsiveness remains a big challenge. Herein, we describe an efficient method to realize the transfer and storage of chirality in intrinsically achiral films of a side-chain polymeric liquid crystal system by combining chiral doping and cross-linking strategy. Even the helical structure was destroyed by UV light irradiation, the memorized chiral information in the covalent network enabled complete self-recovery of the original chiral superstructure. These results allowed the building of a novel chiroptical switch without any additional chiral source in multiple types of liquid crystal polymers, which may be one of the competitive candidates for use in stimulus-responsive chiro-optical devices.

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.

Chiral Liquid Crystalline Polymers Containing Isosorbide Groups

2013 ◽  
Vol 781-784 ◽  
pp. 403-406
Author(s):  
Mei Tian ◽  
Zhi Xin Xu ◽  
Li Gao ◽  
Dan Shu Yao ◽  
Xiao Zhi He ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Liquid Crystalline Polymers ◽  
Optical Microscope ◽  
Liquid Crystal Polymers ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Crystalline Polymers

A series of new main-chain liquid-crystal polymers (LCPs) were prepared from sebacoyl chloride (SD) and various amount of 4, 4-Dihydroxy-2, 2-dimethyl Benzalazine (DDBA) and isosorbide (ISO). The liquid crystal (LC) properties were investigated by polarized optical microscope (POM), differential scanning calorimetry (DSC) and X-ray diffraction measurements. P1 exhibited a typical nematic thread texture, which contains no ISO. P2-P7 are Sc* and N LCPs, which exhibited broken fan-shaped texture and droplet texture. The introduction of chiral units into the polymers led to a change of mesomorphase, as compared with P1.

Influence of the side-chain structure and molecular weight on the re-entrant behaviors of mesogen-jacketed liquid crystalline polymers

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78516-78527 ◽  
Author(s):  
Zheng Xiang ◽  
Sheng Chen ◽  
Yongbing Luo ◽  
Ping Li ◽  
Hailiang Zhang
Keyword(s):  
Molecular Weight ◽  
Phase Behavior ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Terminal Group ◽  
Chain Structure ◽  
Side Chain ◽  
Spacer Length ◽  
Crystalline Polymers

The influence of the alkyl spacer length and the terminal group volume influence on the phase behavior and structure of mesogen-jacketed liquid-crystalline polymers.

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