Intrinsically Stretchable and Self‐Healing Electroconductive Composites Based on Supramolecular Organic Polymer Embedded with Copper Microparticles

Integration of electrical conductivity, stretchability, and self‐healing properties of electronic material is a promising way to meet the criteria for developing next‐generation technologies ranging from ordinary sustainable electronics to high‐tech human–machine interfaces. To this particular purpose, a cost‐effective composite material having simultaneous functionalities of electrical conductivity, stretchability, and self‐healability based on supramolecular organic polymer and copper microparticles is presented. The composite can be mass‐produced via the sol–gel method and is tunable by adjusting the copper loading. Electrical and mechanical characterizations show that the composite material owns not only a high stretchability (≥120%) but also an excellent self‐healability at ambient conditions within 5 min. The healing efficiency is about 90% for its mechanical property and almost 100% for its electrical properties. Besides, the electrical properties are found in the range of semiconductors that can be restored upon five cutting–healing cycles. One‐step further, the developed material is utilized to fabricate a wearable strain sensor. Also, real‐time human motion detection is demonstrated using the fabricated sensor. These results exhibit the potential of the material for developing self‐healing electronic devices and show promising directions in the field of wearable and sustainable electronics, human–machine interfaces. A cost‐effective composite material having simultaneous functionalities of electrical conductivity, stretchability and self‐healability is developed based on supramolecular polymer, copper microparticles, and urea crosslinkers. The developed material is utilized to fabricate a wearable strain sensor. Also, real‐time human motion detection is demonstrated using this sensor that exhibits high performance and effectiveness of the self‐healing electroconductive material in wearable and sustainable electronics.