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Sensors 2013, 13(5), 5841-5856; doi:10.3390/s130505841

A Ferrocene-Porphyrin Ligand for Multi-Transduction Chemical Sensor Development

1 Department of Chemical Science and Technologies, University of Rome Tor Vergata, via della Ricerca Scientifica, 1, Rome 00133, Italy 2 Faculty of Biology and Soil Science, St. Petersburg State University, Oraniembaum sh., 2, St. Petersburg 198504, Russia 3 IFM, Linköping University, Linköping SE-581 83, Sweden 4 Department of Electronic Engineering, University of Rome Tor Vergata, via Politecnico, 1, Rome 00133, Italy
* Author to whom correspondence should be addressed.
Received: 14 March 2013 / Revised: 19 April 2013 / Accepted: 22 April 2013 / Published: 7 May 2013
(This article belongs to the Special Issue Novel Tools in Electrochemical Sensing)
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5,10,15,20-Tetraferrocenyl porphyrin, H2TFcP, a simple example of a donor-acceptor system, was tested as ligand for the development of a novel multi-transduction chemical sensors aimed at the determination of transition metal ions. The fluorescence energy transfer between ferrocene donor and porphyrin acceptor sub-units was considered. The simultaneously measured optical and potentiometric responses of solvent polymeric membranes based on H2TFcP permitted the detection of lead ions in sample solutions, in the concentration range from 2.7 × 10−7 to 3.0 × 10−3 M. The detection limit of lead determination was 0.27 μM, low enough to perform the direct analysis of Pb2+ in natural waters.
Keywords: porphyrin-ferrocene ligand; opto-potentiometric transduction; transition metals detection porphyrin-ferrocene ligand; opto-potentiometric transduction; transition metals detection
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.

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Lvova, L.; Galloni, P.; Floris, B.; Lundström, I.; Paolesse, R.; Natale, C.D. A Ferrocene-Porphyrin Ligand for Multi-Transduction Chemical Sensor Development. Sensors 2013, 13, 5841-5856.

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