具有双电和光输出的光子离子凝胶已经被深入研究。然而,由热敏纳米凝胶组装的可调谐温度响应光子离子凝胶尚未被研究。在这里,一种制造光子离子凝胶的创新方法已经被开发用于具有可调温度灵敏度和结构颜色的智能可穿戴设备。首先,聚(异丙基丙烯酰胺-r-苯基马来苯胺酸)P(NIPAm-r-NPMA)纳米凝胶在丙烯酸2-羟乙酯(HEA)中自组装成光子晶体,水,和三氟甲磺酸1-乙基-3-甲基咪唑鎓的离子液体。然后通过聚(乙二醇)二丙烯酸酯(PEGDA)交联的丙烯酸2-羟乙酯的聚合来开发强大的光子离子凝胶。离子液体的掺入,三氟甲磺酸1-乙基-3-甲基咪唑,增强光子离子凝胶的机械强度,调整离子凝胶的温度敏感性,使它们适应各种环境条件。研究结果表明,这些离子凝胶可以在智能可穿戴设备中提供双重功能,由于离子液体的导电性和来自纳米凝胶组件的结构颜色,组合电和光信号输出。所得到的光子离子凝胶表现出优异的基材附着力,机械稳定性,和快速的弹性。更重要的是,这些离子凝胶中的纳米凝胶充当光子晶体(PC)的构建块,赋予了与角度无关的着色,并增强了超过200%的拉伸性,而没有纳米凝胶的离子凝胶的可拉伸性仅为约100%。我们具有可调温度灵敏度和双输出的光子离子凝胶将为创新智能可穿戴设备的开发开辟一条道路。
Photonic ionogels with dual electrical and optical output have been intensively studied. However, tunable temperature-responsive photonic ionogel assembled by thermosensitive
nanogels has not been studied yet. Herein, an innovative approach to fabricate photonic ionogels has been developed for smart wearable devices with tunable temperature sensitivity and structural color. Firstly, poly(isopropylacrylamide-r-phenylmaleanilic acid) P(NIPAm-r-NPMA)
nanogels self-assemble into photonic crystals in 2-hydroxyethyl acrylate (HEA), water, and the ionic liquid of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate. And then robust photonic ionogels are developed through a polymerization of 2-hydroxyethyl acrylate crosslinked by poly(ethylene glycol) diacrylate (PEGDA). The incorporation of the ionic liquid, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate, enhances the mechanical strength of photonic ionogels and tunes the temperature-sensitivity of the ionogels, making them adaptable to various environmental conditions. The findings demonstrate that these ionogels can serve dual functions in smart wearable devices, combining electrical and optical signal outputs due to the conductivity of the ionic liquid and structural color from the nanogel assembly. The resultant photonic ionogels exhibit exceptional substrate adhesion, mechanical stability, and fast resilience. More significantly, the
nanogels within these ionogels serve as the building blocks of photonic crystals (PCs) endow with angle-independent coloration and enhance stretchability beyond 200 %, while the stretchability of the ionogles without the
nanogels is only about 100 %. Our photonic ionogels with tunable temperature-sensitivity and dual outputs will open an avenue to the development of the innovative smart wearable devices.