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RESEARCH PRODUCT
Designing solid optical sensors for in situ passive discrimination of volatile amines based on a new one-step hydrophilic PDMS preparation
Pilar Campíns-falcóCarmen Molins-leguaN. Jornet-martínezRosa Herráez-hernándezYolanda Moliner-martínezJorge Verdú-andréssubject
In situMaterials scienceOne-Step02 engineering and technologyengineering.material010402 general chemistry01 natural scienceschemistry.chemical_compoundCoatingMaterials ChemistryOrganic chemistryElectrical and Electronic EngineeringInstrumentationDimethylamineDetection limitAqueous solutionMethylamineMetals and Alloys021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsTetraethyl orthosilicatechemistryChemical engineeringengineering0210 nano-technologydescription
Abstract We reported an optimal material for embedding chemoresponsive dyes based on modified commercial PDMS. A new approach to impart hydrophilicity to H-PDMS in an unique step was developed by addition of tetraethyl orthosilicate (TEOS) and in absence of basic or acid aqueous mixtures or hydroxyl-compounds during the PDMS coating process. This incorporation significantly enhances the performance of PDMS-based devices for sensing applications. New colorimetric sensors for passive detection and in situ discrimination of volatile amines have been obtained. The limit of detection achieved was 1.5 mg m −3 for both, dimethylamine and methylamine, suitable to control real working atmospheres. This work has been supported by a PATENT P201300436 (Campins-Falco et al. [1] ).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-02-01 | Sensors and Actuators B: Chemical |