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Chemical trapping system for detecting molecules, e.g. drugs or explosives, comprising fluorescent complexing agent, fluorescence detector and molecularly imprinted polymer as filter to increase selectivity
Chemical trapping system for detecting molecules, e.g. drugs or explosives, comprising fluorescent complexing agent, fluorescence detector and molecularly imprinted polymer as filter to increase selectivity
A new chemical trapping system for detecting a class of molecules (A), comprising fluorescent material (I) which can form a charge transfer complex with (A) and detectors for variation in the fluorescence of the material, additionally contains a filter comprising a polymer (II) having molecular imprint cavities having a defined geometric and chemical configuration for fixing (A). An independent claim is included for a corresponding detection method involving: (1) trapping (A) in (II); (2) desorbing (A) using a secondary gas flow; (3) forming a complex of (A) with (I), by circulating the gas flow charged with (A) through (I); and (4) measuring the variation in fluorescence between (I) and the (I)-(A) complex.
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