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.

Dini, F., Magna, G., MARTINELLI, E., Pomarico, G., DI NATALE, C., PAOLESSE, R., et al. (2015). Combining porphyrins and pH indicators for analyte detection. ANALYTICAL AND BIOANALYTICAL CHEMISTRY [10.1007/s00216-014-8445-9].

Combining porphyrins and pH indicators for analyte detection

Magna, G;MARTINELLI, EUGENIO;DI NATALE, CORRADO;PAOLESSE, ROBERTO;POMARICO, GIUSEPPE
2015

Abstract

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.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - Fondamenti Chimici delle Tecnologie
Settore ING-INF/01 - Elettronica
eng
Con Impact Factor ISI
Chemical sensing; Optical sensing; Computer screen photo-assisted technique; Metalloporphyrins; Indicators
Dini, F., Magna, G., MARTINELLI, E., Pomarico, G., DI NATALE, C., PAOLESSE, R., et al. (2015). Combining porphyrins and pH indicators for analyte detection. ANALYTICAL AND BIOANALYTICAL CHEMISTRY [10.1007/s00216-014-8445-9].
Dini, F; Magna, G; Martinelli, E; Pomarico, G; DI NATALE, C; Paolesse, R; Lundström, I; Pomarico, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/111189
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