Monomer Trapping Synthesis Toward Dynamic Nanocon?nement Self-healing Eutectogels for Strain Sensing
writer：Yuesong Lv, Changchun Li, Zhangqin Yang, Mingxi Gan, Yuyan Wang, Minxun Lu,* Xinxing Zhang,* and Li
keywords：dynamic nanocon?nement, eutectogel, monomer trapping synthesis, self- healing, strain sensing
source：期刊
Issue time：2024年
The rapid advancement in attractive platforms such as biomedicine and
human-machine interaction has generated urgent demands for intelligent
materials with high strength, ?exibility, and self-healing capabilities. However,
existing self-healing ability materials are challenged by a trade-o? between
high strength, low elastic modulus, and healing ability due to the inherent low
strength of noncovalent bonding. Here, drawing inspiration from human
?broblasts, a monomer trapping synthesis strategy is presented based on the
dissociation and recon?guration in amphiphilic ionic restrictors (7000-times
volume monomer trapping) to develop a eutectogel. Bene?ting from the
nanocon?nement and dynamic interfacial interactions, the molecular chain
backbone of the formed con?ned domains is mechanically reinforced while
preserving soft movement capabilities. The resulting eutectogels demonstrate
superior mechanical properties (1799% and 2753% higher tensile strength
and toughness than pure polymerized deep eutectic solvent), excellent
self-healing e?ciency (>90%), low tangential modulus (0.367 MPa during the
working stage), and the ability to sensitively monitor human activities. This
strategy is poised to o?er a new perspective for developing high strength, low
modulus, and self-healing wearable electronics tailored to human body
motion.