Flexible electronic devices have great potential applications in energy storage, wearable electronic sensors, human-machine interfaces, electronic skin, etc., which has aroused great interest. Among them, electronic devices with good flexibility and biocompatibility have been widely used in disease diagnosis and health monitoring research. Nonetheless, flexible electronics devices that can be administered on demand in a controlled manner have not been used for real-time wound condition monitoring and diagnosis. In addition, traditional plastic substrates have limited applications in medical monitoring and on-demand drug delivery due to shortcomings such as poor comfort, improved mechanical matching, and poor air permeability. Therefore, it is very important to prepare an electronic device which is flexible, breathable and capable of monitoring the wound state in real time and performing on-demand drug treatment when the infection occurs, and is effective for improving the comfort of the wound and achieving rapid treatment of the wound surface. The network-like film based on polymer nanocomposites has the advantages of high surface area, porous structure permeable to air and liquid, controllability of components, etc., and thus is a potential preparation material for flexible multifunctional electronic devices.
Recently, Professor Zhang Liqun and Professor Wan Pengbo from Beijing University of Chemical Technology reported a flexible and ventilated electronic device with real-time temperature sensing function, which can monitor wound condition at the wound site and provide information about infection or inflammation; The flexible temperature sensor is coupled to the wireless transmitter for real-time wireless temperature monitoring. Nano-network-like films based on temperature-sensitive polymers can also be assembled into highly efficient flexible heaters to trigger the release of antibiotics contained in the fibers on demand, eliminating bacteria in the wound site in time after infection.