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Combining porphyrins and pH indicators for analyte detection
Department of Electronic Engineering, University of Rome, Italy.
Department of Electronic Engineering, University of Rome, Italy.
Department of Electronic Engineering, University of Rome, Italy.
Department of Chemical Science and Technologies, University of Rome, Italy.
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Number of Authors: 7
2015 (English)In: Analytical and Bioanalytical Chemistry, ISSN 1618-2642, E-ISSN 1618-2650, Vol. 407, no 14, 3975-3984 p.Article in journal (Refereed) Published
Abstract [en]

High sensitivity and cross-selectivity are mandatory properties for sensor arrays. Although metalloporphyrins and pH indicators are among the most common and appropriate choices for the preparation of optical sensor arrays, the sensitivity spectrum of these dyes is limited to those analytes able to induce an optical response. To extend the receptive field of optical sensors, we explore the design of composite materials, where the molecular interaction among the subunits enriches their sensing working mechanisms. We demonstrate that blends of single metalloporphyrins and pH indicators, tested with a transduction apparatus based on ubiquitous and easily available hardware, can be endowed with sensing properties wider than those of single constituents, enabling the recognition of a broad range of volatiles.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 407, no 14, 3975-3984 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-118620DOI: 10.1007/s00216-014-8445-9ISI: 000354190300008PubMedID: 25614242OAI: oai:DiVA.org:liu-118620DiVA: diva2:817094
Available from: 2015-06-04 Created: 2015-06-02 Last updated: 2015-06-18Bibliographically approved

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Lundström, Ingemar
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Biosensors and BioelectronicsFaculty of Science & Engineering
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Atom and Molecular Physics and Optics

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