Flexible Pani Nanocomposite Network Film Sensors

Flexible room-temperature electronic sensors have been envisioned as crucial components in future generations of portable and foldable devices,including consumer electronics,health care,homeland security,robotics,and environmental monitoring.They could provide highly sensitive and cost-effective real-time analysis,demonstrating great advantages than general,expensive,and heavy laboratory instruments.Hence,the development of the flexible room-temperature electronic sensors with high performance,easy fabrication and low-cost is highly desirable.Herein,we fabricated conductive polymer/two-dimensional nanocomposite network structures on flexible stretchable substrates.The structure of the nanocomposite and the sensing of ammonia were explored.The research content and results are as follows:A ’green’ paper-based flexible room-temperature electronic sensor was fabricated by filtration coating of hierarchical PANI/RGO nanocomposite onto environmentally friendly 3D cellulose papers.After the in situ chemical oxidative polymerization of aniline in RGO solution,the hierarchical PANI/RGO nanocomposite was obtained for further filtration coating to form paper-based flexible film.The paper-based flexible PANI/RGO nanocomposite room-temperature electronic sensor exhibits excellent gas sensing properties and stable flexibility for NH3.The high gas-sensing performence of PANI/RGO nanocomposite films can be attributed to the synergistic effect of RGO and PANI,as well as the high specific surface area of the 3D network structure and the high carrier mobility of the composites.This work lays a foundation for the development of flexible electronic devices and wearable devicesA stretchable,transparent body-attachable PANI/MoS2 nanocomposite network sensor was fabricated by in situ chemical oxidative polymerization.The structure and properties of the films were characterized and studied.The assembled stretchable electronic sensor from the PANI/MoS2 nanocomposite films revealed excellent sensing performance and reliable stretchable without obvious change of sensing performance after 500 stretching cycles(30%strain)for portable room-temperature gas sensing.The gas sensing sensitivity of the network nanocomposite film to 30 ppm ammonia was 75.58 and the detection limit of the 3D network structured nanocomposite film to ammonia could be as low as 50 ppb.The stretchable gas sensor has a great application value on wearable devices,but there are few reports on stretchable film gas sensors.The research for the development of stretchable wearable electronic equipment provides some reference.