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Crystals
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Responsive Liquid Crystal Polymer
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Responsive Liquid Crystal Polymer

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Liquid Crystals".

Deadline for manuscript submissions: closed (12 January 2023) | Viewed by 5102

Special Issue Editors

Prof. Dr. Jiawen Chen

E-Mail Website
Guest Editor
SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
Interests: liquid crystal polymer
Dr. Wei Zhao

E-Mail Website
Guest Editor
SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
Interests: liquid crystal polymer

Special Issue Information

Dear Colleagues,

Responsive liquid crystal polymers have drawn increasing interest in recent years because of their considerable potential for wide applications. Due to the inherent characteristics of liquid crystal polymers, the order parameter of anisotropic molecules can respond to environmental changes, such as temperature, light, pH, gas, humidity, mechanical stimulation, electric or magnetic fields, etc. Many recent studies in the field explore how to control, design, and engineer—on demand—polymers with diverse types of responsive groups, enabling complex multiple-responsive functionalities. Designing liquid crystal polymers with a smart behavior using various external stimuli in one system show particular promise.

The Special Issue aims to highlight some of the recent advances in responsive liquid crystal polymers, including but not limited to the synthesis of novel materials, a new response type of polymer, the clever design of multifunctional devices, etc. It is our pleasure to invite authors to contribute original research articles, reviews, short communications, and concept papers.

Prof. Dr. Jiawen Chen
Dr. Wei Zhao
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • facile preparation of liquid crystal
  • responsive liquid crystal polymer
  • muti-functional liquid crystal Polymer

Published Papers (2 papers)

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Research

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9 pages, 1870 KiB  
Article
The Effect of the Degree of Polymerization and Polymer Composition on the Temperature Responsiveness of Cholesteric Semi-Interpenetrating Networks
by Lansong Yue, Guofu Zhou and Laurens T. de Haan
Crystals 2022, 12(11), 1614; https://doi.org/10.3390/cryst12111614 - 11 Nov 2022
Cited by 1 | Viewed by 1557
Abstract
Cholesteric liquid crystal oligomers and polymers are promising materials for creating materials and devices with stimuli-responsive structural color, and the cholesteric to smectic pre-transition effect is of particular interest as it leads to a strong redshift in the reflected color upon cooling. Cholesteric [...] Read more.
Cholesteric liquid crystal oligomers and polymers are promising materials for creating materials and devices with stimuli-responsive structural color, and the cholesteric to smectic pre-transition effect is of particular interest as it leads to a strong redshift in the reflected color upon cooling. Cholesteric polymers can be stabilized by the formation of semi-interpenetrating networks to obtain more robust photonic materials, but this tends to strongly suppress the pre-transition effect. Here, we show that the pre-transition effect in semi-interpenetrating networks based on main-chain cholesteric oligomers can be amplified by incorporating a smectic monomer and by increasing the degree of polymerization of the oligomers. This amplification counteracts the suppressing effect of the semi-interpenetrating network, and the resulting materials still show a significant band shift upon cooling. Presumably, both methods lead to the formation of more smectic domains in the cholesteric helix, which causes an amplified pre-transitional effect. The results bring us closer to the use of cholesteric semi-interpenetrating cholesteric networks for applications in smart sensing, healthcare, and safety devices. Full article
(This article belongs to the Special Issue Responsive Liquid Crystal Polymer)
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Review

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13 pages, 2998 KiB  
Review
Recent Progress on Preparation Strategies of Liquid Crystal Smart Windows
by Linfeng Luo, Yinghui Liang, Yuting Feng, Dan Mo, Yang Zhang and Jiawen Chen
Crystals 2022, 12(10), 1426; https://doi.org/10.3390/cryst12101426 - 9 Oct 2022
Cited by 17 | Viewed by 3011
Abstract
Liquid crystal (LC) smart windows that are able to regulate natural light by changing the optical transmittance in response to external stimulus have become an effective way to reduce building energy consumption. The rapid development of technology has brought out a variety of [...] Read more.
Liquid crystal (LC) smart windows that are able to regulate natural light by changing the optical transmittance in response to external stimulus have become an effective way to reduce building energy consumption. The rapid development of technology has brought out a variety of responsive smart windows suitable for daily life, including electrical-, thermal-, and photo-responsive ones. In this review, the recent progress in LC smart windows that switch between transparent and opaque states by different stimuli is overviewed. The preparation strategies for single-/dual-responsive smart windows are outlined, exclusively concentrating on the functional design and working principle. Furthermore, the advantages and current drawbacks of smart windows for each response mode are briefly described. Finally, a perspective on the direction of future responsive LC smart windows is discussed. Full article
(This article belongs to the Special Issue Responsive Liquid Crystal Polymer)
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