Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers

Bo Ji; Lang Qin; Yan-Lei Yu

doi:10.1007/s10118-025-3279-9

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Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers

REVIEW | Updated：2025-02-25

- Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers
- Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers
- 高分子科学（英文） 2025年43卷第3期页码：406-428
- Affiliations：
  
  Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
- Author bio：
  
  qinlang@fudan.edu.cn (L.Q.)
  ylyu@fudan.edu.cn (Y.L.Y.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 52233001, 51927805, and 52173110), the Innovation Program of Shanghai Municipal Education Commission (No. 2023ZKZD07), and the Shanghai Rising-Star Program (No. 22QA1401200).;Lang Qin is an associate professor in the Department of Materials Science at Fudan University (China). He received his B.S. degree in Materials Chemistry from Sun Yat-sen University (China) in 2013 and his Ph.D. degree in Materials Physics and Chemistry from Fudan University (China) in 2018, where he continued his research as a postdoctoral research fellow for 2 years. His research interests focus on the design of functional liquid crystal materials and the construction of photonic crystals.Yan-Lei Yu is a professor in the Department of Materials Science at Fudan University (China). She graduated in applied chemistry from Anhui University (China) in 1993 and obtained her M.S. degree in polymer chemistry and physics from the University of Science and Technology of China in 1996. She gained her Ph.D. degree in environmental chemistry and engineering from Tokyo Institute of Technology (Japan) and was promoted to Full Professor at Fudan University in 2004. Her research interests focus on the development of photodeformable smart materials and light-controllable interface materials with photosensitive polymers and liquid crystal polymers.
- DOI：10.1007/s10118-025-3279-9
  中图分类号：
- 收稿日期：2024-11-11，
  
  修回日期：2024-11-30，
  
  录用日期：2024-11-30，
  
  网络出版日期：2025-02-18，
  
  纸质出版日期：2025-03-01
- Accepted：
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Ji, B.; Qin, L.; Yu, Y. L. Dynamic structural colors in helical superstructures: from supramolecules to polymers. Chinese J. Polym. Sci. 2025, 43, 406–428

Bo Ji, Lang Qin, Yan-Lei Yu. Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers[J]. Chinese journal of polymer science, 2025, 43(3): 406-428.
Ji, B.; Qin, L.; Yu, Y. L. Dynamic structural colors in helical superstructures: from supramolecules to polymers. Chinese J. Polym. Sci. 2025, 43, 406–428 DOI： 10.1007/s10118-025-3279-9.

Bo Ji, Lang Qin, Yan-Lei Yu. Dynamic Structural Colors in Helical Superstructures: from Supramolecules to Polymers[J]. Chinese journal of polymer science, 2025, 43(3): 406-428. DOI： 10.1007/s10118-025-3279-9.

摘要

This paper highlights dynamic structural color tuning mechanisms in cholesteric liquid crystals (CLCs)

elastomers (CLCEs)

respectively under external stimuli including light

mechanical force

and swelling. These outstanding dynamic color-tuning capabilities lay a solid foundation for applications in information security

adaptive camouflage

and intelligent optical sensing systems.

Abstract

Cholesteric liquid crystals (CLCs) exhibit unique helical superstructures that selectively reflect circularly polarized light

enabling them to dynamically respond to environmental changes with tunable structural colors. This dynamic color-changing capability is crucial for applications that require adaptable optical properties

positioning CLCs as key materials in advanced photonic technologies. This review focuses on the mechanisms of dynamic color tuning in CLCs across various forms

including small molecules

cholesteric liquid crystal elastomers (CLCEs)

and cholesteric liquid crystal networks (CLCNs)

and emphasizes the distinct responsive coloration each structure provides. Key developments in photochromic mechanisms based on azobenzene

dithienylethene

and molecular motor switches

are discussed for their roles in enhancing the stability and tuning range of CLCs. We examine the color-changing behaviors of CLCEs under mechanical stimuli and CLCNs under swelling

highlighting the advantages of each form. Following this

applications of dynamic color-tuning CLCs in information encryption

adaptive camouflage

and smart sensing technologies are explored. The review concludes with an outlook on current challenges and future directions in CLC research

particularly in biomimetic systems and dynamic photonic devices

aiming to broaden their functional applications and impact.

关键词

Keywords

references

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