Ultra‐high Performance Thermochromic Polymers via a Solid‐solid Phase Transition Mechanism and Their Applications

Ultra‐high Performance Thermochromic Polymers via a Solid‐solid Phase Transition Mechanism and Their Applications

Advanced Materials

10.1002/adma.202405430

http://dx.doi.org/10.1002/adma.202405430

Xiang Yun Debbie Soo, Danwei Zhang, Sze Yu Tan, Yi Ting Chong, Hui Kim Hui, Anqi Sng, Fengxia Wei, Ady Suwardi, Zhuang Mao Png, Qiang Zhu, Jianwei Xu

25 June 2024

Soo, X. Y. D., Zhang, D., Yu Tan, S., Chong, Y. T., Hui, H. K., Sng, A., Wei, F., Suwardi, A., Png, Z. M., Zhu, Q., & Xu, J. (2024). Ultra‐high Performance Thermochromic Polymers via a Solid‐solid Phase Transition Mechanism and Their Applications. Advanced Materials. Portico. https://doi.org/10.1002/adma.202405430

AbstractThermochromic materials are substances that change colour in response to temperature variations. Today, sustainability concerns are the main drivers of thermochromic research, with smart, energy efficient windows being one of primary applications. While vanadium oxides and leuco dyes are traditionally the main thermochromic materials, hydrogels operating based on change of solvation have risen as some of the most promising materials due to their high optical transparency and good solar modulating abilities. In this work, a distinct mechanism for thermochromism arising from the crystalline solid to amorphous solid polymer transition, with a corresponding transition from an opaque state to a transparent state is disclosed. Both ultra‐high optical transparency (Tlum up to 99%) and ultra‐high solar modulation (ΔTsolar up to 87%) were observed. The transition temperature was tunable from 11 to 61 ͦ C by tuning the polymer structure. When incorporated into applications such as greenhouse materials and thermoelectric devices, significant performance enhancement was observed, due to the thermochromic material functioning as a thermal valve, speeding up solar heat absorbance while inhibiting the cooling process via its phase transition.This article is protected by copyright. All rights reserved

Publisher Copyright

This research / project is supported by the Agency for Science, Technology and Research - Singapore Manufacturing, Trade and Connectivity (MTC) Young Individual Research Grant (YIRG)
Grant Reference no. : M22K3c0102

This research / project is supported by the Agency for Science, Technology and Research - HTCO Fund
Grant Reference no. : C231218001

This is the peer reviewed version of the following article: Soo, X. Y. D., Zhang, D., Yu Tan, S., Chong, Y. T., Hui, H. K., Sng, A., Wei, F., Suwardi, A., Png, Z. M., Zhu, Q., & Xu, J. (2024). Ultra‐high Performance Thermochromic Polymers via a Solid‐solid Phase Transition Mechanism and Their Applications. Advanced Materials. Portico. https://doi.org/10.1002/adma.202405430, which has been published in final form at doi.org/10.1002/adma.202405430. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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