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Chemosensors 2015, 3(2), 178-189; doi:10.3390/chemosensors3020178

Development of Solid-State Electrochemiluminescence (ECL) Sensor Based on Ru(bpy)32+-Encapsulated Silica Nanoparticles for the Detection of Biogenic Polyamines

Group of Nanobiotechnology, Department of Chemical Technology, Universitat Rovira i Virgili, Campus Sescelades, Av. Països Catalans 26, Tarragona, 43007, Spain
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Academic Editors: Paolo Ugo and Michael Ongaro
Received: 28 February 2015 / Revised: 12 May 2015 / Accepted: 14 May 2015 / Published: 21 May 2015
(This article belongs to the Special Issue Electrochemical Sensors for Environmental and Food Analysis)
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Abstract

A solid state electrochemiluminescence (ECL) sensor based on Ru(bpy)32+-encapsulated silica nanoparticles (RuNP) covalently immobilised on a screen printed carbon electrode has been developed and characterised. RuNPs were synthesised using water-in-oil microemulsion method, amino groups were introduced on their surface, and they were characterised by transmission electron microscopy. Aminated RuNPs were covalently immobilised on activate screen-printed carbon electrodes to form a solid state ECL biosensor. The biosensor surfaces were characterised using electrochemistry and scanning electron microscopy, which showed that aminated nanoparticles formed dense 3D layers on the electrode surface thus allowing immobilisation of high amount of Ru(bpy)32+. The developed sensor was used for ECL detection of biogenic polyamines, namely spermine, spermidine, cadaverine and putrescine. The sensor exhibited high sensitivity and stability. View Full-Text
Keywords: electrochemiluminescence; silica nanoparticle; solid state ECL sensor; biogenic amines electrochemiluminescence; silica nanoparticle; solid state ECL sensor; biogenic amines
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Spehar-Délèze, A.-M.; Almadaghi, S.; O'Sullivan, C.K. Development of Solid-State Electrochemiluminescence (ECL) Sensor Based on Ru(bpy)32+-Encapsulated Silica Nanoparticles for the Detection of Biogenic Polyamines. Chemosensors 2015, 3, 178-189.

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