Phase Separation Enabled Functional Ionogels

Xue Wang; Xin Fu; Lie Chen; Ming-Jie Liu

doi:10.1007/s10118-026-3591-z

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Phase Separation Enabled Functional Ionogels

Special Topic: Functional Gels | Updated：2026-05-30

- Phase Separation Enabled Functional Ionogels
- Phase Separation Enabled Functional Ionogels
- Chinese Journal of Polymer Science 2026年44卷第6期页码：1592-1605
- Affiliations：
  
  a.Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
  b.Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
  c.International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, China
- Author bio：
  
  chenlie@cau.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 22305014).;Lie Chen received his Ph.D. degree from Beihang University in 2019 under the supervision of Prof. Lei Jiang and Prof. Ming-Jie Liu. He subsequently conducted postdoctoral research at Beihang University. He then served as a Senior Engineer at the Brain-Computer Integration Technology Center, Beijing Mechanical Equipment Research Institute. In 2024, he joined the Department of Chemistry, College of Science, China Agricultural University. His current research focuses on ionic liquids-based functional polymer gels.The authors declare no interest conflict.
- DOI：10.1007/s10118-026-3591-z
  中图分类号：
- 收稿：2025-12-18，
  
  录用：2026-01-27，
  
  网络首发：2026-05-20，
  
  纸质出版：2026-06-05
- Accepted：
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Wang, X.; Fu, X.; Chen, L.; Liu, M. J. Phase separation enabled functional ionogels. Chinese J. Polym. Sci. 2026, 44, 1592–1605

Xue Wang, Xin Fu, Lie Chen, et al. Phase Separation Enabled Functional Ionogels[J]. Chinese Journal of Polymer Science, 2026, 44(6): 1592-1605.
Wang, X.; Fu, X.; Chen, L.; Liu, M. J. Phase separation enabled functional ionogels. Chinese J. Polym. Sci. 2026, 44, 1592–1605 DOI： 10.1007/s10118-026-3591-z.

Xue Wang, Xin Fu, Lie Chen, et al. Phase Separation Enabled Functional Ionogels[J]. Chinese Journal of Polymer Science, 2026, 44(6): 1592-1605. DOI： 10.1007/s10118-026-3591-z.

摘要

This review summarizes the unique microphase separation phenomena in ionogels

driven by the distinct physicochemical properties of ionic liquids (ILs). It highlights how these specific phase-separation mechanisms and tailored microstructures

enabled by ILs

lead to advanced functionalities not typically achievable in conventional hydrogels or organogels.

Abstract

Phase-separated ionogels have emerged as a promising class of functional materials characterized by their unique thermodynamic behavior. In contrast to conventional polymer networks that rely on specific chemical structures

phase separation in these systems stems from the thermodynamic instability of polymer-solvent interactions. This mechanism allows precise control over material properties through a multiscale structural design. Ionic liquids (ILs)

which serve as the dispersion medium

play a pivotal role in tuning the lower critical solution temperature/upper critical solution temperature (UCST/LCST) phase behavior of the corresponding ionogels owing to their tunable cation-anion combinations

polarity

and hydrogen-bonding capacity. These features not only facilitate the construction of thermally responsive ionogels but also provide a versatile platform for mechanistic studies. This review systematically explores the formation mechanisms of phase separation in ionogels

emphasizing the crucial influence of the physicochemical properties of ILs and categorizing the key driving forces behind phase separation. It further examined the distinctive effects of phase separation on the surface/interfacial properties

mechanical behavior

and electrical performance of ionogels

incorporating the latest research advances. Finally

the current challenges and prospective research directions for phase-separated ionogels were outlined.

关键词

Keywords

references

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