Molecularly Imprinted Silver‐Halide Reflection Holograms for Label‐Free Opto‐Chemical Sensing

Abstract

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.

Rapid Prototyping of Chemical Microsensors Based on Molecularly Imprinted Polymers Synthesized by Two‐Photon Stereolithography

“…Last but not the least, photopolymerization can be performed at relatively low temperatures, thus favoring the prepolymerization complex between the functional monomers and the template, which significantly improves the quality of the molecular recognition sites . It is therefore not surprising that MIPs have during the past years raised increasing interest for applications in chemical sensors, such as holographic sensors and fiber optics sensors …”

Reversible change of diffraction efficiency in Cl-containing 3-glycidoxypropyl silsesquioxane films co-doped with Ag and Cu

“…Since the samples were photosensitive, the synthesis was carried out in the dark. For the preparation of the sol, GPTMS in ethanol was hydrolyzed by adding Cu(NO 3 ) 2 · 3H 2 O, AgNO 3 , HNO 3 and CCl 3 COOH, followed by stirring at room temperature (RT) for 1 h to allow its hydrolysis. The sol was transparent, indicating all chemicals were well dissolved.…”

LTL type nanozeolites utilized in surface photonics structures for environmental sensors

“…Surface relief structures feature across a range of optical sensor platforms including surface plasmon resonance-based sensors for detection of chemical and biological molecules [14] and optical fibre Bragg grating-based sensors for volatile organic compounds (VOC) detection [4,15] and temperature monitoring [16] have been reported. The inscription of the surface of molecularly-imprinted polymers via interference photolithography has facilitated the production of testosterone sensors [17]. Aztec holograms which are essentially a combination of the surface structure and Bragg reflector geometries, were originally proposed in Ref.…”