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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Bastiaansen, Cwm Cees
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Topics
Publications (32/32 displayed)
- 2021NIR–vis–UV Light-Responsive High Stress-Generating Polymer Actuators with a Reduced Creep Ratecitations
- 2020Direct Laser Writing of Four-Dimensional Structural Color Microactuators Using a Photonic Photoresistcitations
- 2020Thermoplastic, rubber-like marine antifouling coatings with micro-structures via mechanical embossing
- 2017Photonic shape memory polymer with stable multiple colorscitations
- 2016Tunable surface topography in fluoropolymers using photo-embossing
- 2016Electrospinning of reactive mesogens
- 2015Stimuli-responsive materials based on interpenetrating polymer liquid crystal hydrogelscitations
- 2014Humidity-responsive liquid crystalline polymer actuators with an asymmetry in the molecular trigger that bend, fold, and curlcitations
- 2014Photoembossing of surface relief structures in polymer films for biomedical applicationscitations
- 2014The role of supramolecular chemistry in stimuli responsive and hierarchically structured functional organic materials
- 2014An optical sensor for volatile amines based on an inkjet-printed, hydrogen-bonded, cholesteric liquid crystalline filmcitations
- 2014An optical sensor for volatile amines based on an inkjet-printed, hydrogen-bonded, cholesteric liquid crystalline film
- 2014Optical and topographic changes in water-responsive patterned cholesteric liquid crystalline polymer coatingscitations
- 2013New approach toward reflective films and fibers using cholesteric liquid-crystal coatings
- 2013New approach toward reflective films and fibers using cholesteric liquid-crystal coatingscitations
- 2013A real time optical strain sensor based on a cholesteric liquid crystal networkcitations
- 2013A real time optical strain sensor based on a cholesteric liquid crystal networkcitations
- 2012Engineering of complex order and the macroscopic deformation of liquid crystal polymer networkscitations
- 2012Printable optical sensors based on H-bonded supramolecular cholesteric liquid crystal networkscitations
- 2010Fully reversible transition from Wenzel to Cassie-Baxter states on corrugated superhydrophobic surfacescitations
- 2009Room temperature preparation of conductive silver features using spin-coating and inkjet printingcitations
- 2008Printing of monolithic polymeric microstructures using reactive mesogenscitations
- 2007Physical properties of anisotropically swelling hydrogen-bonded liquid crystal polymer actuatorscitations
- 2007High aspect ratio surface relief structures by photoembossingcitations
- 2005Large-area microfabrication of three-dimensional, helical polymer structurescitations
- 2005Self-assembled polymer films for controlled agent-driven motioncitations
- 2005Large amplitude light-induced motion in high elastic modulus polymer actuatorscitations
- 2001Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells
- 2001Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cellscitations
- 2000A scattering electro-optical switch based on dendrimers dispersed in liquid crystals
- 2000New functional polymers for liquid crystal displays : review of some recent developments
- 2000Electro-Optical Switches Based on Polymer and Dendrimer Filled Nematics
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article
An optical sensor for volatile amines based on an inkjet-printed, hydrogen-bonded, cholesteric liquid crystalline film
Abstract
A printable hydrogen-bonded cholesteric liquid crystal (CLC) polymer film is described, which can be used as a sensor for detection of gaseous trimethylamine (TMA). In this optical sensor the virgin CLC polymer network reflects green light. When anhydrous TMA gas penetrates the film, disruption of the hydrogen bonds occurs, with the simultaneous formation of carboxylate salts. The consequent reduction of the molecular order causes the green reflecting CLC film to become colorless. However, exposure to TMA in water-saturated nitrogen gas results in a red reflecting film. Due to the hygroscopic nature of the polymer salt that is formed by TMA, water vapor which is present in the environment is absorbed by the films. This leads to swelling of the film, resulting in an increase in pitch size and therefore a red shift of the reflection band. Interestingly, after exposure to ambient conditions, restoration of the green reflecting film takes place, showing that the sensor can be used multiple times. In a proof of principle experiment, it was shown that these CLC films can be used as optical sensors to detect volatile amines, that are produced by decaying fish. Keywords: stimuli-responsive materials; cholesteric liquid crystals; sensors; inkjet printing; amine detection