Mechanochromic, Shape-Programmable and Self-Healable Cholesteric Liquid Crystal Elastomers Enabled by Dynamic...

Area of Science:

• Materials Science
• Polymer Chemistry
• Photonics

Background:

• Cholesteric liquid crystal elastomers (CLCEs) possess unique helical nanostructures for photonic applications.
• Tailoring CLCE functionalities dynamically is crucial for adaptive optics and soft robotics.

Purpose of the Study:

• To design and synthesize a CLCE with mechanochromic, shape-programmable, and self-healable properties.
• To integrate dynamic covalent boronic ester bonds into the CLCE polymer network.

Main Methods:

• Incorporation of dynamic boronic ester bonds into the main-chain CLCE polymer.
• Mechanical stretching to tune the circularly polarized reflection across the visible spectrum.
• Assessment of reprogrammable and self-healing capabilities.

Main Results:

• The synthesized CLCE exhibits reversible and dynamic tuning of circularly polarized reflection via mechanical stretching.
• The dynamic boronic ester bonds impart robust reprogrammable and self-healing properties to the CLCE.
• Demonstration of 4D (color and 3D shape) programmability.

Conclusions:

• The developed CLCE offers a versatile platform for 4D programmable photonic actuators.
• This research provides insights for creating advanced materials for bioinspired camouflage and adaptive optical systems.
• The findings pave the way for next-generation intelligent machines and soft robotics.