Microporous triptycene-based affinity materials on quartz crystal microbalances for tracing of illicit compounds
Triptycene-based organic molecules of intrinsic microporosity (OMIMs) with extended functionalized π-surfaces are excellent materials for gas sorption and separation. In this study, the affinities of triptycene-based OMIM affinity materials on 195 MHz high-fundamental-frequency quartz crystal microb...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
11 April 2019
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| In: |
ChemPlusChem
Year: 2019, Volume: 84, Issue: 9, Pages: 1239-1244 |
| ISSN: | 2192-6506 |
| DOI: | 10.1002/cplu.201900189 |
| Online Access: | lizenzpflichtig lizenzpflichtig 
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| Author Notes: | Ephraim Prantl, Bernd Kohl, Dimitrij Ryvlin, Philipp Biegger, Hubert Wadepohl, Frank Rominger, Uwe H.F. Bunz, Michael Mastalerz, and Siegfried R. Waldvogel |
| Summary: | Triptycene-based organic molecules of intrinsic microporosity (OMIMs) with extended functionalized π-surfaces are excellent materials for gas sorption and separation. In this study, the affinities of triptycene-based OMIM affinity materials on 195 MHz high-fundamental-frequency quartz crystal microbalances (HFF-QCMs) for hazardous and illicit compounds such as piperonal and (-)-norephedrine were determined. Both new and existing porous triptycene-based affinity materials were investigated, resulting in very high sensitivities and selectivities that could be applied for sensing purposes. Remarkable results were found for safrole - a starting material for illicit compounds such as ecstasy. A systematic approach highlights the effects of different size of π-surfaces of these affinity materials, allowing a classification of the properties that might be optimal for the design of future OMIM-based affinity materials. |
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| Item Description: | Gesehen am 05.03.2020 |
| Physical Description: | Online Resource |
| ISSN: | 2192-6506 |
| DOI: | 10.1002/cplu.201900189 |