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Holographic molecularly imprinted polymer films for the use in chemical sensors are obtained in one step through photopolymerization with interfering laser beams. This results in hierarchical structuring at four length scales: micrometer-scale patterning of millimeter- to centimeter- size polymer objects with holographic optical properties, exhibiting nanometer-scale porosity and specific molecular recognition properties at the molecular scale through self-assembly. Specific binding of the target analyte testosterone is measured by diffraction analysis.

Two-photon stereolithography is used for rapid prototyping of submicrometre molecularly imprinted polymer-based 3D structures. The structures are evaluated as chemical sensing elements and their specific recognition properties for target molecules are confirmed. The 3D design capability is exploited and highlighted through the fabrication of an all-organic molecularly imprinted polymeric microelectromechanical sensor.

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obtained by colloidal templating, [ 22,23 ] since they allow the rapid fabrication of macroscale fi lms with homogeneous optical properties over a large surface area and also offer fl exibility to produce virtual optical elements and other types of indicators (bar graphs, images etc.) that are useful in visual sensing. The multiscale structuring of MI-SHRH offered by i) the macroscale of the polymer fi lm, ii) the microscale of the polymer pores to provide access to the binding sites, iii) the nanoscale of holographic fringe spacing, and iv) the molecular imprints, make MI-SHRH completely innovative hierarchicallystructured functional materials having the potential to give rise to inexpensive, mass-producible label-free sensing devices.

A new material combining a molecularly imprinted polymer for specific analyte recognition, and a holographic structure for optochemical sensing is described by Karsten Haupt, Olivier Soppera, and co‐workers . The material is obtained in one step through photo‐polymerization with interfering laser beams, resulting in a holographic molecularly imprinted polymer film that is hierarchically structured at four length scales. Specific binding of the target analyte testosterone is measured by diffraction analysis.

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