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Reference type: Conference Proceeding
Authors: Debliquy M, Lahem D, Krumpmann A, Gonzalez Vila A, Raskin JP, Caucheteur C
Publication date: 2017
Article title: Molecularly Imprinted Polymers for VOC Sensing: chemoresistive and optical Sensors.
DOI: 2078.1/194710 Alternative URL: https://dial.uclouvain.be/pr/boreal/en/object/boreal%3A194710

Conference information: Proceedings: FiMPART Conference, Bordeaux (France)

Abstract: Nowadays, Volatile Organic Compounds (VOC's) in indoor air are considered as a big pollution issue. VOC's originate from furniture, paintings, varnishes, wood protection, construction materials, etc. In particular, formaldehyde is one of the priority pollutants because of its carcinogenic character and its omnipresence in our close environment. Methods based on air sample collection and lab measurements are the most used measurement techniques today but although they are accurate and reliable, they are expensive, not real time and cause statistics issues. Devices based on chemical sensors are a good solution as these systems can be very sensitive, low cost, real time and easily integrated in common electronics to build portable systems. This paper presents formaldehyde sensors based on molecularly imprinted polymer (MIP). MIP is a polymer synthesized incorporating a template molecule. Functional monomers form a complex around the template and are linked afterwards to form a polymer constituted of a series of "cages" trapping the template. Afterwards, the template is removed, leaving cavities imprinted in the polymer matrix that allows the polymer to selectively recognize the target molecule. These elements are cheap, easy to synthesize and can be adapted to any kind of surface. When using conducting polymers for building MIP's, the adsorption of the template can modify their optical or electrical properties. We showed that it was possible to use these materials for building chemoresistive or optical fiber sensors working at room temperature for detecting formaldehyde with a good selectivity and fair sensitivity.
Template and target information: formaldehyde
Author keywords: polypyrrole, formaldehyde, sensor, molecularly imprinted polymer


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