抄録
We have proposed intercalative type organic-inorganic hybrid materials as the chemical sensors for selective detection of volatile organic compounds (VOCs). The organic and inorganic components take part in molecular recognition and transduction of chemical signals to measurable resistance changes, respectively. We have prepared polypyrrole intercalated MoO3 hybrid materials, (PPy)xMoO3, with a layered structure. A semiconducting-like transport is observed for the (PPy)xMoO3 pressed pellets, and the resistivity value is 9.6 Ωcm at room temperature. The (PPy)xMoO3 pressed pellets a distinct response to VOCs by increasing in their electrical resistivity, which is induced by the incorporation of VOC molecules into the interlayers of (PPy)xMoO3. (PPy)xMoO3 exhibits higher sensitivities to polar analytes such as formaldehyde and acetaldehyde, whereas it showed almost no response to toluene and benzene.
