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<p>Thermochromic soft materials are flexible functional materials that adaptively tune optical properties (transmittance, reflectance, or scattering) with temperature for thermal modulation. Herein, a laminated thermochromic gel (DEE-DA) is synthesized by encapsulating a thermochromic hydrogel (DA) between two hydrophobic ionogels (DEE) in a stacked configuration. The synergy of multiple dynamic bonds endows the DEE-DA gel with exceptional mechanical properties and remarkable self-healing capability (98.8% at 30 °C). More importantly, attributed to the temperature-responsive reversible cleavage and recombination of hydrogen bonds and borate ester bonds, DEE-DA gel demonstrates tunable transmittance with a light modulation efficiency of 85.45%. In response to the various external conditions, the gel can auto-adjust the optical properties to avoid sun irradiation or heat loss. Accordingly, the gel enables efficient dual-mode thermal modulation across a broad temperature range to realize thermal management. The research proposes gel thermochromism and laminated durability enhancement for adaptive materials in smart buildings and wearables.</p>

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Laminated self-healing thermochromic gel for visualizing thermal management

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • Siying Wang,
  • Yu Yu,
  • Qian Wang,
  • Hanjun Sun,
  • Yuxin Guo,
  • Lulu Qu,
  • Xiaochen Dong

摘要

Thermochromic soft materials are flexible functional materials that adaptively tune optical properties (transmittance, reflectance, or scattering) with temperature for thermal modulation. Herein, a laminated thermochromic gel (DEE-DA) is synthesized by encapsulating a thermochromic hydrogel (DA) between two hydrophobic ionogels (DEE) in a stacked configuration. The synergy of multiple dynamic bonds endows the DEE-DA gel with exceptional mechanical properties and remarkable self-healing capability (98.8% at 30 °C). More importantly, attributed to the temperature-responsive reversible cleavage and recombination of hydrogen bonds and borate ester bonds, DEE-DA gel demonstrates tunable transmittance with a light modulation efficiency of 85.45%. In response to the various external conditions, the gel can auto-adjust the optical properties to avoid sun irradiation or heat loss. Accordingly, the gel enables efficient dual-mode thermal modulation across a broad temperature range to realize thermal management. The research proposes gel thermochromism and laminated durability enhancement for adaptive materials in smart buildings and wearables.