摘要
Ion‐conductive photonic crystal elastomers (ic‐PCEs) uniquely combine stimuli‐responsive color changes with electrical feedback, enabling transformative applications in wearable electronics and adaptive camouflage. However, their fabrication methods are limited. Here, a scalable swelling–deswelling approach is presented to fabricate ic‐PCEs by diffusing ionic liquids into pre‐assembled PCEs. When swelling, the polymer matrix is initially dilated to create intermolecular spaces, facilitating homogeneous ionic liquid diffusion. Once diffusion is complete, hydrogen bonding stabilizes the ionic liquid within the matrix, forming a conductive network beyond a threshold concentration. At ∼50 wt% ionic liquid content, the ic‐PCEs exhibit high ionic conductivity (∼0.46 mS cm −1 ) and a ∼55% enhancement in color brightness. The ic‐PCEs are highly stretchable, with a rapid recovery time (∼170 ms) and reversible color and electrical resistance responses to strain. Under 50% strain, the material shows a color shift from red to bluish‐green, a ∼20% decrease in reflection wavelength, and a ∼135% change in electrical resistance. Exceptional thermal stability and durability further ensure reliable performance. The potential of ic‐PCEs as wearable motion sensors applied to fingers and joints is demonstrated, showcasing their multifunctionality. This work provides a robust route for scalable ic‐PCE fabrication, opening new opportunities for advanced wearable devices and adaptive materials.
姜心雨
PhD
安童
PhD
高峰
PhD
邱军军
PhD
赵其斌
副教授
研究兴趣包括胶体光子晶体组装、材料结构规则度调控、规则及不规则结构在不同条件下的演变过程及物理机理、光学材料及能源类材料制备、微纳结构材料的大面积制备方法、自然界中的功能结构及其在跨种演变视角下的生物进化学等。