Nano Metal Particals Modified Polymer For Flexible Chemical Sensors Application

• Main Authors: Shiu, Chuen-Chi, 許淳棋
• Other Authors: Su, Pi-Guey
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/65735162944297985940

碩士 === 中國文化大學 === 化學系應用化學碩士班 === 100 === In this study, polypyrrole modified with Pt nanoparticles (Ppy-Pt) and generation 1 polyamidoamone dendrimer-Au nanoparticles (G1-NH2-AuNPs) were used to fabricate flexible gas sensor and flexible humidity sensors by Layer-by-layer self-assemble and drop-coating on plastic substrate, respectively. Then using atomic force microscopy (AFM) and scanning electron microscopy (SEM) to analysis the surface structure of Ppy-Pt and G1-NH2-AuNPs flexible nanocomposite film. The novel flexible H2 gas sensor was successfully fabricated by the layer-by-layer in situ self-assembly of a Pt-PPy thin film on a modified PET substrate. It had high sensitivity, fast response and recovery time, and long-term stability. The flexible impedance-type humidity sensor that was based on G1-NH2-AuNPs film had a wide working range of humidity, a small hysteresis, a fast response time, high flexibility, and good long-term stability.