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4 results on '"Elisa Del Canto"'

2. Reductive dismantling and functionalization of carbon nanohorns

Author

Nikos Tagmatarchis, Luca Ortolani, Damien Voiry, Georgia Pagona, Elisa Del Canto, Laure Noé, Alain Pénicaud, Marc Monthioux, Vittorio Morandi, Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, Istituto per la Microelettronica e i Microsistemi [Bologna] (IMM), Consiglio Nazionale delle Ricerche (CNR), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), European Project: 3217,Graphene and Nanotubes, European Project, National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Potassium, Carbon nanotubes, chemistry.chemical_element, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, Photochemistry, 01 natural sciences, Catalysis, law.invention, Carbon Nanohorn, law, Materials Chemistry, Organic chemistry, Graphenes, Metals and Alloys, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Electrophile, Ceramics and Composites, Surface modification, 0210 nano-technology, Carbon
Abstract

International audience; Reduction of carbon nanohorn (CNH) aggregates with potassium naphthalenide resulted in their dismantling and individualization. Furthermore, the reduced CNHs were functionalized via addition of electrophiles.

Published
2015
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3. Functionalization of single-walled carbon nanotubes with optically switchable spiropyrans

Author

Tatiana S. Perova, Manuel Natali, Silvia Giordani, Elisa Del Canto, and Kevin Flavin

Subjects
Spiropyran, Molecular switch, Nanotube, Absorption spectroscopy, Nanotechnology, General Chemistry, Carbon nanotube, law.invention, Nanomaterials, chemistry.chemical_compound, chemistry, law, Surface modification, General Materials Science, Merocyanine
Abstract

The design, synthesis and complete characterization of a smart material composed of single-walled nanotubes functionalized with spiropyran-based photo switchable molecules are reported. The chemical complexity of the system requires the use of a range of complementary techniques in order to provide a complete picture of the composition and performance of the nanomaterial. Thermal gravimetric analysis ensured both the high degree of chemical functionalization and the presence of molecular switches in the nanotube sample; micro-Raman indirectly confirmed the successful oxidation of the tubes, FT-IR proved the nature of the functional groups introduced based on their characteristic stretching vibrations and atomic force microscopy demonstrated nanotube lengths of approximately 600 nm. UV–Vis–NIR absorption spectroscopy was used to evaluate the photoresponsive behaviour of the nanomaterial, and the intensity of the absorption band at 556 nm could be modulated by light-induced reversible conversion of the spiropyran molecules attached to the SWCNT from the spiro close conformation to the merocyanine open form. We were also able to provide the first example of a continuous solution based on–off switching in a spiropyran–nanotube material.

Published
2010
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4. Photo-controlled release of zinc metal ions by spiropyran receptors anchored to single-walled carbon nanotubes

Author

Elisa Del Canto, Dania Movia, Silvia Giordani, and Manuel Natali

Subjects
Indoles, Materials science, Light, General Physics and Astronomy, Nanotechnology, Carbon nanotube, Spectrum Analysis, Raman, Nanomaterials, law.invention, Ion, chemistry.chemical_compound, symbols.namesake, law, Cell Line, Tumor, Spectroscopy, Fourier Transform Infrared, Humans, Benzopyrans, Physical and Theoretical Chemistry, Ions, Spiropyran, Drug Carriers, Nanotubes, Carbon, Nitro Compounds, Controlled release, Zinc, chemistry, Drug delivery, symbols, Zinc metal, Raman spectroscopy
Abstract

Light controllable release of antinflammatory zinc ions by a smart multifunctional material composed of spiropyrans and single walled carbon nanotubes (SWNTs) is demonstrated. The exploitation of a number of complementary characterization techniques allows the investigation of both composition and performance of the multifunctional SP/SWNT nanomaterial developed. Moreover, its suitability for potential applications in bio-systems is suggested by the effective removal of the metal catalyst and the introduction of biocompatible linkers into the SP/SWNT material. The realization of potential photo controllable SP/SWNTs based drug delivery systems (DDSs) is envisaged, where nanotubes act as intracellular carriers of light modulated receptors for bioactive agents.

Published
2012
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