Sensors and Microsystems - Proceedings of the 10th Italian Conference, 2008
... to di Chimica, Universita'Tor Vergata', Via della Ricerca Scientifica I, 00133 Roma... more ... to di Chimica, Universita'Tor Vergata', Via della Ricerca Scientifica I, 00133 Roma S. Kaciulis, G. Padeletti, L. Pandolfi, M. Viticoli, A. Cusma Istituto per lo Studio ... The GOD enzyme molecules were immobilized on the surface of Au nanotubes by self assembling method (SAM). ...
The detection of biological and chemical species is central to many areas of healthcare and the l... more The detection of biological and chemical species is central to many areas of healthcare and the life sciences, ranging from uncovering and diagnosing disease to the discovery and screening of new drug molecules. Hence, the development of new devices that enable direct, sensitive, and rapid analysis of these species could impact humankind in significant ways. Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sensors for the direct detection of biological and chemical species. (1,2) Central to detection is the signal transduction associated with selective recognition of a biological or chemical species. Nanostructures offer new and sometimes unique opportunities in this rich and interdisciplinary area of science and technology. The diameters of these nanostructures are comparable to the size of biological and chemical species being sensed, thus intuitively represent excellent primary transducers for producing signals that ultimately interfac...
Metal nanoparticles/carbon nanotube hybrid materials have attracted attention because of their pr... more Metal nanoparticles/carbon nanotube hybrid materials have attracted attention because of their promising applications in nanoelectronics as well as highly sensitive sensors. It is well known that different metal nanoparticles have been coated or deposited on the side wall of carbon nanotube and on this basis, in this study, we have explored a new strategy to deposit nanoparticles on side wall of Single Walled Carbon Nanotubes (SWCNTs) by one step reaction in aqueous solutions, where gold nanoparticles could be self-coated on carbon nanotubes during their synthesis processes, using citrate reduction as method for the synthesis of gold nanoparticles.
Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sen... more Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sensors for the direct detection of biological and chemical species. In this work we report the preparation and the fully characterization of nanomaterials such as gold nanowires and TiO2 nanostructured films to be used for assembling of electrochemical biosensors. Gold nanowires were prepared by electroless deposition within the pores of polycarbonate particle track-etched membranes (PTM). Glucose Oxidase was deposited onto the nanowires using self assembling monolayer as anchor layers for the enzyme molecules. Finally cyclic voltammetry was performed for different enzymes to test the applicability of gold nanowires as biosensors. Considering another interesting nanomaterial, the realization of functionalised TiO2 thin films on Si substrates for the immobilization of enzymes is reported. Glucose oxidase and horseradish peroxidase immobilized onto TiO2-based nanostructured surfaces exhibite...
ABSTRACT The exceptional structural, mechanical, chemical and electronic properties of single-wal... more ABSTRACT The exceptional structural, mechanical, chemical and electronic properties of single-wall carbon nanotubes (SWCNTs) make them suitable for the development of a completely new class of sensors and actuators, biosensors, electrochemical capacitors and supercapacitors. As a result, the study of CNT-based nanostructured and functional materials has become an interesting theme. In particular, the formation of CNT/polymer composites, besides possible improvements in the mechanical and electrical properties of polymers, is considered as a promising approach for the assembling of hybrid CNTs-polymer devices. However, manipulation and processing of SWCNTs is generally limited by their insolubility in most common solvents. Considerable effort has therefore been devoted to the chemical modification and derivation of carbon nanotubes. In this work, we described different treatments of carbon nanotube materials and a FT-IR study to demonstrate the functionalization of SWCNTs.
An electrochemical biosensor for the determination of lysine to be used for rapid evaluation of f... more An electrochemical biosensor for the determination of lysine to be used for rapid evaluation of food quality has been developed. Platinum electrodes have been coated by electropolymerisation with 1,2-diaminobenzene (1.2-DAB) using cyclic voltammetry. The reduction in the oxidation of interferents compared with the bare platinum electrode was 100% for ascorbic acid, 99% for acetaminophen and 99% for cysteine. The enzyme L-lysine-alpha-oxidase was then immobilised onto the polymer layer by passive adsorption and a calibration curve for lysine constructed. This gave a linear range of 1 x 10(-5) mol/l to 1 x 10(-3) mol/l and a limit of detection of 2 x 10(-7) mol/l.
We investigated the influence of both electrolyte nature and concentration on the kinetics of ele... more We investigated the influence of both electrolyte nature and concentration on the kinetics of electropolymerization of several monomers and on the resulting morphology of the produced nanotubules. The investigated monomers were: 1,2- and 1,4-diaminobenzene, 2,3- and 1,8-diaminonaphthalene, o-anisidine. Finally, the morphology and structure of the different template-synthesized nanostructured materials has been carefully analyzed by scanning electron microscopy (SEM) and Raman
Sensors and Microsystems - Proceedings of the 10th Italian Conference, 2008
... to di Chimica, Universita'Tor Vergata', Via della Ricerca Scientifica I, 00133 Roma... more ... to di Chimica, Universita'Tor Vergata', Via della Ricerca Scientifica I, 00133 Roma S. Kaciulis, G. Padeletti, L. Pandolfi, M. Viticoli, A. Cusma Istituto per lo Studio ... The GOD enzyme molecules were immobilized on the surface of Au nanotubes by self assembling method (SAM). ...
The detection of biological and chemical species is central to many areas of healthcare and the l... more The detection of biological and chemical species is central to many areas of healthcare and the life sciences, ranging from uncovering and diagnosing disease to the discovery and screening of new drug molecules. Hence, the development of new devices that enable direct, sensitive, and rapid analysis of these species could impact humankind in significant ways. Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sensors for the direct detection of biological and chemical species. (1,2) Central to detection is the signal transduction associated with selective recognition of a biological or chemical species. Nanostructures offer new and sometimes unique opportunities in this rich and interdisciplinary area of science and technology. The diameters of these nanostructures are comparable to the size of biological and chemical species being sensed, thus intuitively represent excellent primary transducers for producing signals that ultimately interfac...
Metal nanoparticles/carbon nanotube hybrid materials have attracted attention because of their pr... more Metal nanoparticles/carbon nanotube hybrid materials have attracted attention because of their promising applications in nanoelectronics as well as highly sensitive sensors. It is well known that different metal nanoparticles have been coated or deposited on the side wall of carbon nanotube and on this basis, in this study, we have explored a new strategy to deposit nanoparticles on side wall of Single Walled Carbon Nanotubes (SWCNTs) by one step reaction in aqueous solutions, where gold nanoparticles could be self-coated on carbon nanotubes during their synthesis processes, using citrate reduction as method for the synthesis of gold nanoparticles.
Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sen... more Devices based on nanomaterials are emerging as a powerful and general class of ultrasensitive sensors for the direct detection of biological and chemical species. In this work we report the preparation and the fully characterization of nanomaterials such as gold nanowires and TiO2 nanostructured films to be used for assembling of electrochemical biosensors. Gold nanowires were prepared by electroless deposition within the pores of polycarbonate particle track-etched membranes (PTM). Glucose Oxidase was deposited onto the nanowires using self assembling monolayer as anchor layers for the enzyme molecules. Finally cyclic voltammetry was performed for different enzymes to test the applicability of gold nanowires as biosensors. Considering another interesting nanomaterial, the realization of functionalised TiO2 thin films on Si substrates for the immobilization of enzymes is reported. Glucose oxidase and horseradish peroxidase immobilized onto TiO2-based nanostructured surfaces exhibite...
ABSTRACT The exceptional structural, mechanical, chemical and electronic properties of single-wal... more ABSTRACT The exceptional structural, mechanical, chemical and electronic properties of single-wall carbon nanotubes (SWCNTs) make them suitable for the development of a completely new class of sensors and actuators, biosensors, electrochemical capacitors and supercapacitors. As a result, the study of CNT-based nanostructured and functional materials has become an interesting theme. In particular, the formation of CNT/polymer composites, besides possible improvements in the mechanical and electrical properties of polymers, is considered as a promising approach for the assembling of hybrid CNTs-polymer devices. However, manipulation and processing of SWCNTs is generally limited by their insolubility in most common solvents. Considerable effort has therefore been devoted to the chemical modification and derivation of carbon nanotubes. In this work, we described different treatments of carbon nanotube materials and a FT-IR study to demonstrate the functionalization of SWCNTs.
An electrochemical biosensor for the determination of lysine to be used for rapid evaluation of f... more An electrochemical biosensor for the determination of lysine to be used for rapid evaluation of food quality has been developed. Platinum electrodes have been coated by electropolymerisation with 1,2-diaminobenzene (1.2-DAB) using cyclic voltammetry. The reduction in the oxidation of interferents compared with the bare platinum electrode was 100% for ascorbic acid, 99% for acetaminophen and 99% for cysteine. The enzyme L-lysine-alpha-oxidase was then immobilised onto the polymer layer by passive adsorption and a calibration curve for lysine constructed. This gave a linear range of 1 x 10(-5) mol/l to 1 x 10(-3) mol/l and a limit of detection of 2 x 10(-7) mol/l.
We investigated the influence of both electrolyte nature and concentration on the kinetics of ele... more We investigated the influence of both electrolyte nature and concentration on the kinetics of electropolymerization of several monomers and on the resulting morphology of the produced nanotubules. The investigated monomers were: 1,2- and 1,4-diaminobenzene, 2,3- and 1,8-diaminonaphthalene, o-anisidine. Finally, the morphology and structure of the different template-synthesized nanostructured materials has been carefully analyzed by scanning electron microscopy (SEM) and Raman
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Papers by Antonella Curulli