Preparation of conducting polymer inverse opals and its application as ammonia sensor

We developed an ammonia gas sensor by taking advantage of conductive inverse opal films. Conducting polymer inverse opals were fabricated by depositing conducting polymers (PEDOT and PPy) into the void space of silica colloidal crystal temples followed with silica-etching. When using the inverse opal structured conducting polymer films as ammonia gas sensor, both optical and electric signals were derived, and the accuracy of target information could be ensured.