ArticleScientific reports2017
The selective flow of volatile organic compounds in conductive polymer-coated microchannels.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Recent Advances in Polymer Science and Fabrication Processes for Enhanced Microfluidic Applications: An Overview.Micromachines · 2024Review
- Chameleon-Inspired Colorimetric Sensors for Real-Time Detections with Humidity.Micromachines · 2023Article
- Microfluidic Gas Sensors: Detection Principle and Applications.Micromachines · 2022Review
- Microfluidics in Gas Sensing and Artificial Olfaction.Sensors (Basel, Switzerland) · 2020Review
- Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors.Sensors (Basel, Switzerland) · 2020Review
- Fabrication of polyaniline-graphene/polystyrene nanocomposites for flexible gas sensors.RSC advances · 2019Article
- Selective detection of volatile organic compounds in microfluidic gas detectors based on "like dissolves like".Scientific reports · 2019Article
Corrections and comments
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Authors and funding
2 authors.
Funding
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Abstract
Many gaseous markers of critical biological, physicochemical, or industrial occurrences are masked by the cross-sensitivity of the sensors to the other active components present at higher concentrations. Here, we report the strongly selective diffusion and drift of contaminant molecules in air-filled conductive polymer-coated microfluidic channels for the first time. Monitoring the passage of different target molecules through microchannels coated with Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) revealed that contaminants such as hexane, benzene, and CO pass through the channel unaffected by the coating while methanol, ethanol, and partly acetone are blocked. The observations are explained with reference to the selective interactions between the conductive polymer surface and target gas molecules amplified by the large wall/volume ratio in microchannels. The accumulated quantitative data point at the hydrogen bonding as the mechanism of wall adsorption; dipole-dipole interactions are relatively insignificant. The presented model facilitates a better understanding of how the conductive polymer-based chemical sensors operate.
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Registered trials
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