Novel Low-Cost Selective Pre-Concentrators Based on Metal Organic Frameworks

Metal organic frameworks (MOFs) are used as selective preconcentrator-materials in order to improve the overall sensor-system sensitivity. MOFs exhibit interior surface areas of above 1000 m2/g and possess chemically uniform pore structures that render them a perfect sorbent for highly specific interaction with guest molecules. They are evaluated using inverse gas chromatography (iGC) and deposited on microheaters in order to perform cyclic preconcentration measurements on an existing sensor platform.