AI Article Synopsis
- The paper discusses the use of quartz microbalance and silicon-based microcantilever sensors to detect volatile organic compounds (VOCs) through the application of crystalline metal-organic framework (MOF) thin films.
- Two types of MOF thin films were developed on gold electrodes using COOH-terminated self-assembled monolayers, enhancing the sensors' capability to concentrate VOC gases.
- The frequency changes in the weight-detectable sensors indicate the adsorption and desorption of VOCs, while the MOF layers ensure selectivity by allowing only specific VOCs to be adsorbed based on their size.
Article Abstract
Detection of volatile organic compounds (VOCs) using weight-detectable quartz microbalance and silicon-based microcantilever sensors coated with crystalline metal-organic framework (MOF) thin films is described in this paper. The thin films of two MOFs were grown from COOH-terminated self-assembled monolayers onto the gold electrodes of sensor platforms. The MOF layers worked as the effective concentrators of VOC gases, and the adsorption/desorption processes of the VOCs could be monitored by the frequency changes of weight-detectable sensors. Moreover, the MOF layers provided VOC sensing selectivity to the weight-detectable sensors through the size-selective adsorption of the VOCs within the regulated nanospace of the MOFs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4150105 | PMC |
| http://dx.doi.org/10.1038/srep06247 | DOI Listing |
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Detection of volatile organic compounds by weight-detectable sensors coated with metal-organic frameworks.
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Article Synopsis
- The paper discusses the use of quartz microbalance and silicon-based microcantilever sensors to detect volatile organic compounds (VOCs) through the application of crystalline metal-organic framework (MOF) thin films.
- Two types of MOF thin films were developed on gold electrodes using COOH-terminated self-assembled monolayers, enhancing the sensors' capability to concentrate VOC gases.
- The frequency changes in the weight-detectable sensors indicate the adsorption and desorption of VOCs, while the MOF layers ensure selectivity by allowing only specific VOCs to be adsorbed based on their size.
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We report the construction of a molecular recognition layer composed of polyelectrolyte brushes and metal complexes on the surface of a quartz crystal microbalance (QCM) and the sensing abilities for various volatile organic compounds (VOCs). Atom-transfer radical polymerization of 2-(dimethylamino)ethyl acrylate from an initiator-terminated self-assembled monolayer yielded polyelectrolyte brushes on the surface of a weight-detectable quartz crystal microbalance. One end of a poly[(2-dimethylamino)ethyl methacrylate] brush was covalently attached onto the surface of a sensor.
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