[1PS-268]
Synthesis of Polyaniline-Based Nanocomposites and Their Gas-Sensor Applications
발표자표기현 (국민대학교)
연구책임자김진열 (국민대학교)
Abstract
Polyaniline(PANi) is one of the most promising π-conjugated conductive polymers because of its re markable attributes, such as enhanced conductivity, robust environmental stability, ease of doping, and conductivity control, and a wide array of color changes corresponding to various oxidation levels.
In this study, we synthesized various morphologies of PANi-based nanocomposites, using surfactants and substrates. In particular, we synthesized core-shell spherical nanoparticles and rod-shaped nanotube as sensing elements for acetone gas and gaseous H2O (water vapor). These designed nanostructures improved sensitivity, selectivity, and stability in gas sensing applications. Notably, the CSA-capped Poly(aniline-co-aniline-2-sulfonic acid) spherical nanoparticles were able to reliably detect acetone gas and H2O vapor at concentrations of 1 ppm and 1% relative humidity(RH), respectively, at room temperature.