The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Luigi Zeni - One of the best experts on this subject based on the ideXlab platform.
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sensors based on surface plasmon resonance in a plastic optical fiber for the detection of Trinitrotoluene
Sensors and Actuators B-chemical, 2013Co-Authors: N. Cennamo, R. Galatus, L. Bibbò, Marius Pesavento, Girolamo Dagostino, Luigi ZeniAbstract:Abstract The objective of this study is to present an optical chemical sensor based on surface plasmon resonance (SPR) in a plastic optical fiber (POF) for the selective detection and analysis of Trinitrotoluene (TNT) in aqueous solution. The fabricated optical chemical sensor was realized removing the cladding of a plastic optical fiber along half the circumference, spin coating on the exposed core a buffer of Microposit S1813 photoresist, and finally sputtering a thin gold film. A molecularly imprinted polymer (MIP) film was, then, deposited on the thin gold film to allow the selective detection of TNT. The film was a methacrylic acid-divinyl benzene copolymer obtained by radicalic polymerization at high temperature. The experimental results show that the use of MIP layer is suitable for highly selective detection of TNT, down to about 50 μM (i.e. ∼11 μg/ml). This shows that the direct detection of a low molecular mass substance is possible by SPR transduction, even at low concentration. Furthermore, the proposed sensing head is low cost and relatively easy to realize, and may be very attractive for the detection and analysis of Trinitrotoluene (TNT), in particular considering that it does not involve the use of any electrical devices and it can be used for remote/online monitoring exploiting, f.i., a fiber optic link.
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Detection of Trinitrotoluene based on SPR in molecularly imprinted polymer on plastic optical fiber
Fifth European Workshop on Optical Fibre Sensors, 2013Co-Authors: N. Cennamo, R. Galatus, L. Bibbò, Giorgio D'agostino, Marius Pesavento, Luigi ZeniAbstract:In this work an innovative and low cost optical chemical sensor, based on surface plasmon resonance in plastic optical fiber, is presented and experimentally tested for the detection and analysis of Trinitrotoluene (TNT). The fabricated optical chemical sensor was realized removing the cladding of a plastic optical fiber along half the circumference, spin coating on the exposed core a buffer of Microposit S1813 photoresist, and finally sputtering a thin gold film. A Molecularly Imprinted Polymer (MIP) film was deposited on the thin gold film for the selective detection of TNT. It has been found that the sensor recognizes Trinitrotoluene, since the SPR signal is affected by the presence of TNT in the polymer, while with a slow response kinetics, probably due to the thickness of the polymeric layer.
Nicole Jaffrezicrenault - One of the best experts on this subject based on the ideXlab platform.
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1 3 5 Trinitrotoluene detection by a molecularly imprinted polymer sensor based on electropolymerization of a microporous metal organic framework
Sensors and Actuators B-chemical, 2015Co-Authors: Anca Florea, Cecilia Cristea, Francois Bessueille, Francis Vocanson, Francois Goutaland, Aidong Zhang, Robert Săndulescu, Florence Lagarde, Nicole JaffrezicrenaultAbstract:Abstract An electrochemical sensor based on a molecularly imprinted polymer (MIP) non-covalent approach for the sensitive detection of 1,3,5-Trinitrotoluene (TNT) is presented. The MIP microporous-metal-organic framework (MMOF) is formed in situ at the gold electrode surface via electropolymerization of p-aminothiophenol-functionalized gold nanoparticles in the presence of Trinitrotoluene as the template molecule. The MIP sensor was characterized by linear sweep voltammetry in the presence of hexacyanoferrate/hexacyanoferrite as redox probe, and by atomic force microscopy. A linear response was obtained in the range of 4.4 fM to 44 nM, with a detection limit of 0.04 fM. The prepared molecularly imprinted polymer hybrid sensor exhibits sensitive recognition sites toward Trinitrotoluene with good reproducibility and potential application for the detection of Trinitrotoluene in complex matrices, such as tap and natural waters.
N. Cennamo - One of the best experts on this subject based on the ideXlab platform.
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sensors based on surface plasmon resonance in a plastic optical fiber for the detection of Trinitrotoluene
Sensors and Actuators B-chemical, 2013Co-Authors: N. Cennamo, R. Galatus, L. Bibbò, Marius Pesavento, Girolamo Dagostino, Luigi ZeniAbstract:Abstract The objective of this study is to present an optical chemical sensor based on surface plasmon resonance (SPR) in a plastic optical fiber (POF) for the selective detection and analysis of Trinitrotoluene (TNT) in aqueous solution. The fabricated optical chemical sensor was realized removing the cladding of a plastic optical fiber along half the circumference, spin coating on the exposed core a buffer of Microposit S1813 photoresist, and finally sputtering a thin gold film. A molecularly imprinted polymer (MIP) film was, then, deposited on the thin gold film to allow the selective detection of TNT. The film was a methacrylic acid-divinyl benzene copolymer obtained by radicalic polymerization at high temperature. The experimental results show that the use of MIP layer is suitable for highly selective detection of TNT, down to about 50 μM (i.e. ∼11 μg/ml). This shows that the direct detection of a low molecular mass substance is possible by SPR transduction, even at low concentration. Furthermore, the proposed sensing head is low cost and relatively easy to realize, and may be very attractive for the detection and analysis of Trinitrotoluene (TNT), in particular considering that it does not involve the use of any electrical devices and it can be used for remote/online monitoring exploiting, f.i., a fiber optic link.
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Detection of Trinitrotoluene based on SPR in molecularly imprinted polymer on plastic optical fiber
Fifth European Workshop on Optical Fibre Sensors, 2013Co-Authors: N. Cennamo, R. Galatus, L. Bibbò, Giorgio D'agostino, Marius Pesavento, Luigi ZeniAbstract:In this work an innovative and low cost optical chemical sensor, based on surface plasmon resonance in plastic optical fiber, is presented and experimentally tested for the detection and analysis of Trinitrotoluene (TNT). The fabricated optical chemical sensor was realized removing the cladding of a plastic optical fiber along half the circumference, spin coating on the exposed core a buffer of Microposit S1813 photoresist, and finally sputtering a thin gold film. A Molecularly Imprinted Polymer (MIP) film was deposited on the thin gold film for the selective detection of TNT. It has been found that the sensor recognizes Trinitrotoluene, since the SPR signal is affected by the presence of TNT in the polymer, while with a slow response kinetics, probably due to the thickness of the polymeric layer.
Siegfried R Waldvogel - One of the best experts on this subject based on the ideXlab platform.
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a microring resonator sensor for sensitive detection of 1 3 5 Trinitrotoluene tnt
Sensors, 2010Co-Authors: Rozalia Orghici, Peter Lutzow, Jorg Burgmeier, Jan Koch, Helmut Heidrich, Wolfgang Schade, Nina Welschoff, Siegfried R WaldvogelAbstract:A microring resonator sensor device for sensitive detection of the explosive 1,3,5-Trinitrotoluene (TNT) is presented. It is based on the combination of a silicon microring resonator and tailored receptor molecules.
Anca Florea - One of the best experts on this subject based on the ideXlab platform.
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1 3 5 Trinitrotoluene detection by a molecularly imprinted polymer sensor based on electropolymerization of a microporous metal organic framework
Sensors and Actuators B-chemical, 2015Co-Authors: Anca Florea, Cecilia Cristea, Francois Bessueille, Francis Vocanson, Francois Goutaland, Aidong Zhang, Robert Săndulescu, Florence Lagarde, Nicole JaffrezicrenaultAbstract:Abstract An electrochemical sensor based on a molecularly imprinted polymer (MIP) non-covalent approach for the sensitive detection of 1,3,5-Trinitrotoluene (TNT) is presented. The MIP microporous-metal-organic framework (MMOF) is formed in situ at the gold electrode surface via electropolymerization of p-aminothiophenol-functionalized gold nanoparticles in the presence of Trinitrotoluene as the template molecule. The MIP sensor was characterized by linear sweep voltammetry in the presence of hexacyanoferrate/hexacyanoferrite as redox probe, and by atomic force microscopy. A linear response was obtained in the range of 4.4 fM to 44 nM, with a detection limit of 0.04 fM. The prepared molecularly imprinted polymer hybrid sensor exhibits sensitive recognition sites toward Trinitrotoluene with good reproducibility and potential application for the detection of Trinitrotoluene in complex matrices, such as tap and natural waters.
