The molecular imprinting of polymers is an elegant and extremely effective means of producing functional materials with selective characteristics. "Molecularly Imprinted Polymers" (MIPs) are produced by synthesising highly cross-linked polymers in the presence of template molecules. Due to self-organisation the growing polymer backbone fits around the molecular template, forming an imprint of the template molecule. The geometric adaptation of the polymer and the interactions of the functional groups (for example the formation of hydrogen bonds) make the polymer selective to the template, which means that it can be applied as a selective sensor coating.

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Synthesis of MIPs with different monometers and templates

• Numerous low-cost monomers are available
• Wide range of template molecules (explosives, toxins) are possible
• Use of different synthesis methods

Coating techniques for application in different sensors

• Piezoelectric nano-plotter
• Airbrush

Characterisation of selective adsorption properties

• Screening on QCMs (quartz crystal microbalance)
• Metallising units for different explosives
• Investigation of environmental influences (e.g. air moisture)
• Measurement of selectivity and sensitivity