Carbon-rich monolayers on ITO as highly sensitive platforms for detecting polycyclic aromatic hydrocarbons in water: The case of pyrene
The determination of polycyclic aromatic hydrocarbons (PAHs) in water at low levels is a current challenge given their great impact on the health and safety of the public. Here, a novel pyrene-based self-assembled monolayer (SAM) platform is exploited as PAH sensing recognition device. Interestingly...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/155496 |
| Acceso en línea: | http://hdl.handle.net/10261/155496 |
| Access Level: | acceso abierto |
| Palabra clave: | Self-assembled monolayer Sensor Electrochemical impedance spectroscopy Supramolecular chemistry Molecular switching |
| Sumario: | The determination of polycyclic aromatic hydrocarbons (PAHs) in water at low levels is a current challenge given their great impact on the health and safety of the public. Here, a novel pyrene-based self-assembled monolayer (SAM) platform is exploited as PAH sensing recognition device. Interestingly, the formation of π-π sandwich complexes between PAHs and the recognition element switches the surface electron transfer capability. The unique supramolecular interaction between identical aromatic molecules provides a highly sensitive and selective sensor for pyrene in the order of part per trillion. Accordingly, and using pyrene as a proof-of-concept, this work presents the basis for an 'at-point-of-use' impedimetric sensor focused on a highly sensitive carbon-based SAM for PAHs determination in water at ultra-trace levels. |
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