Humidity‐Responsive Blue Phase Liquid‐Crystalline Film with Reconfigurable and Tailored Visual Signals

Liquid‐crystalline polymers have been applied to a wide variety of stimuli‐responsive materials; however, the inevitable mesogenic alignment or extra complicated preparation hinders their further application and large‐scale fabrication. Here, fabrication of free‐standing blue phase liquid‐crystallin...

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Bibliographic Details
Published in:Advanced functional materials 2020-10, Vol.30 (43), p.n/a
Main Authors: Hu, Wei, Sun, Jian, Wang, Qian, Zhang, Lanying, Yuan, Xiaotao, Chen, Feiwu, Li, Kexuan, Miao, Zongcheng, Yang, Dengke, Yu, Haifeng, Yang, Huai
Format: Article
Language:English
Subjects:
blue phase
Crystal structure
Crystallinity
Humidity
humidity responses
hydrogen bonds
Lattice parameters
Materials science
Nanostructure
nanostructures
Reconfiguration
self‐assemblies nanostructures
Stimuli
Visual signals
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Summary:Liquid‐crystalline polymers have been applied to a wide variety of stimuli‐responsive materials; however, the inevitable mesogenic alignment or extra complicated preparation hinders their further application and large‐scale fabrication. Here, fabrication of free‐standing blue phase liquid‐crystalline (BPLC) film is reported by using one well‐designed system composed of specially designed hydrogen‐bonded mesogenic precursors, which can spontaneously self‐assemble into 3D nanostructures without additional orientation treatment. Upon corrosion in alkaline solution, the BPLC film shows reversible humidity‐responsive behaviors by manipulating their lattice parameters of the nanostructures. The unique stimuli‐responsive behaviors originate from tunable 3D periodic nanostructures of soft materials are reprogrammable, reconfigurable, and visual, showing their potentials for advanced applications as sensor, display, and anticounterfeiting. Molecular self‐assembly mediated by weak and noncovalent bonds has emerged as a promising approach for fabricating novel supramolecular architectures with advanced functionalities. Blue phase liquid crystalline materials can form spontaneously 3D self‐assembled nanostructures without additional treatment; therefore, they have great potential in developing 3D nanomaterials with tailored properties via self‐assembly of nanostructured building blocks.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.202004610