(484h) Solvent-Resistant Electrochemical Transistors As Dual Sensing Platforms in Aqueous and Organic Media
AIChE Annual Meeting
Wednesday, November 13, 2019 - 9:45am to 10:00am
In this work, I discuss the development of single-component OECTs which are insoluble to both aqueous and organic media, yet can be facilely solution-processed from commercial water-soluble carboxylated polythiophene (CPTs) precursors post-synthesis. Such OECTs demonstrate robust stability and high pseudocapacitances even after repeated 2-V width voltage sweeps, as well as high transduction (transconductances = 30 mS at Vgate = -0.5 V) in aqueous and nonaqueous systems. Changes in doping state and ion injection will also be probed using spectroelectrochemistry and electrochemical quartz crystal microbalance to further understand the origin of high transconductance in these materials. In conjunction with other electrochemical techniques, we should be able to elucidate detailed characteristics that dictate high mixed ionic-electronic transport in these materials.