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276 results on '"Genovese, Damiano"'

3. Dye self-organization in doped silica nanoparticles increases the electrochemiluminescence emission in magnetic bead-based assays.

Author

Alemu, Yemataw Addis, Difonzo, Marinella, Genovese, Damiano, Paolucci, Francesco, Prodi, Luca, Rampazzo, Enrico, and Valenti, Giovanni

Subjects
SILICA nanoparticles, ELECTROCHEMILUMINESCENCE, IMMUNOASSAY, DYES & dyeing, SIGNALS & signaling
Abstract

We have investigated the effect of dye distribution on the electrochemiluminescence (ECL) intensity measured with a simplified magnetic bead-based immunoassay for two families of silica nanoparticles (NPs) doped with the cationic Ru(bpy)32+ and the zwitterionic Ru(bpy)2bps complexes (bps = bathophenanthroline disulfonate). The NPs doped with the Ru(bpy)2bps complex, which can efficiently self-organize in the NP volume favoring ECL generation, resulted in 150–400% signal enhancement compared to the Ru(bpy)32+-doped ones. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Challenges in the Direct Detection of Chirality‐induced Spin Selectivity: Investigation of Foldamer‐based Donor‐acceptor Dyads

Author

Privitera, Alberto, primary, Faccio, Davide, additional, Giuri, Demetra, additional, Latawiec, Elisabeth I., additional, Genovese, Damiano, additional, Tassinari, Francesco, additional, Mummolo, Liviana, additional, Chiesa, Mario, additional, Fontanesi, Claudio, additional, Salvadori, Enrico, additional, Cornia, Andrea, additional, Wasielewski, Michael R., additional, Tomasini, Claudia, additional, and Sessoli, Roberta, additional

Published
2023
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11. ECLIPSE. WP1. Systems for signal amplification. Task 1.2. Synthesis and characterization of ECL-active silica nanoparticles. V1

Author

Valenti, Giovanni, Rampazzo, Enrico, Genovese, Damiano, Prodi, Luca, Paolucci, Francesco, Difonzo, Marinella, Alemu, Yemataw Addis, Valenti, Giovanni, Rampazzo, Enrico, Genovese, Damiano, Prodi, Luca, Paolucci, Francesco, Difonzo, Marinella, and Alemu, Yemataw Addis

Abstract

The presented dataset contains data and images produced in the framework of the ECLipse project, regarding the physicochemical, photophysical and electrochemiluminescence (ECL) properties of magnetic microbeads coupled to silica nanoparticles (DDSNPs) doped with [Ru(bpy)3](2+) or [Ru(bpy)2(BPS)] of three different sizes (large, medium, small) as ECL emitters (bpy: 2,2'-bipyridine, BPS:bathophenanthroline disulfonate). The aim of the study was the investigation of doped nanoparticles' ECL properties as a function of nanoparticle's size and nature of the doping dye.

Published
2023

16. Emission or scattering? Discriminating the origin of responsiveness in AIEgen‐doped smart polymers using the TPE dye.

Author

Dini, Valentina A., Genovese, Damiano, Micheletti, Cosimo, Zaccheroni, Nelsi, Pucci, Andrea, and Gualandi, Chiara

Subjects
POLYMERS, STRAINS & stresses (Mechanics), DYES & dyeing, THERMAL stresses, REFRACTIVE index, PHYSIOLOGICAL stress, FLUORESCENCE yield, VISCOSITY
Abstract

Aggregation‐induced emission (AIE) luminogens are attractive dyes to probe polymer properties that depend on changes in chain mobility and free volume. When embedded in polymers the restriction of intramolecular motion (RIM) can lead to their photoluminescence quantum yield (PLQY) strong enhancement if local microviscosity increases (lowering of chain mobility and free volume). Nonetheless, measuring PLQY during stimuli, i.e. heat or mechanical stress, is technically challenging; thus, emission intensity is commonly used instead, assuming its direct correlation with the PLQY. Here, by using fluorescence lifetime as an absolute fluorescence parameter, it is demonstrated that this assumption can be invalid in many commonly encountered conditions. To this aim, different polymers are loaded with tetraphenylenethylene (TPE) and characterized during the application of thermal and mechanical stress and physical aging. Under these conditions, polymer matrix transparency variation is observed, possibly due to local changes in refractive index and to the formation of microfractures. By combining different characterization techniques, it is proved that scattering can affect the apparent emission intensity, while lifetime measurements can be used to ascertain whether the observed phenomenon is due to modifications of the photophysical properties of AIE dyes (RIM effect) or to alterations in the matrix optical properties. [ABSTRACT FROM AUTHOR]

Published
2023
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18. Challenges in the direct detection of chirality-induced spin selectivity: investigation of foldamer-based donor/acceptor dyads

Author

Privitera, Alberto, primary, Faccio, Davide, additional, Giuri, Demetra, additional, Genovese, Damiano, additional, Tassinari, Francesco, additional, Mummolo, Liviana, additional, Chiesa, Mario, additional, Fontanesi, Claudio, additional, Salvadori, Enrico, additional, Cornia, Andrea, additional, Tomasini, Claudia, additional, and Sessoli, Roberta, additional

Published
2022
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19. The emerging role of cancer nanotechnology in the panorama of sarcoma

Author

Mercatali, Laura, primary, Vanni, Silvia, additional, Miserocchi, Giacomo, additional, Liverani, Chiara, additional, Spadazzi, Chiara, additional, Cocchi, Claudia, additional, Calabrese, Chiara, additional, Gurrieri, Lorena, additional, Fausti, Valentina, additional, Riva, Nada, additional, Genovese, Damiano, additional, Lucarelli, Enrico, additional, Focarete, Maria Letizia, additional, Ibrahim, Toni, additional, Calabrò, Luana, additional, and De Vita, Alessandro, additional

Published
2022
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25. Nitroxides as Building Blocks for Nanoantioxidants

Author

Genovese, Damiano, primary, Baschieri, Andrea, additional, Vona, Danilo, additional, Baboi, Ruxandra Elena, additional, Mollica, Fabio, additional, Prodi, Luca, additional, Amorati, Riccardo, additional, and Zaccheroni, Nelsi, additional

Published
2021
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41. 5,10,15-Tris(4-sulfonatophenyl)corrole Synthesis

Author

Caroleo, Fabrizio, primary, Nardis, Sara, additional, Petrella, Greta, additional, Bischetti, Martina, additional, Cicero, Daniel O., additional, Genovese, Damiano, additional, Mummolo, Liviana, additional, Prodi, Luca, additional, Randazzo, Rosalba, additional, D'Urso, Alessandro, additional, and Paolesse, Roberto, additional

Published
2019
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45. Silicon(IV) Corroles

Author

Pomarico, Giuseppe, primary, Monti, Donato, additional, Bischetti, Martina, additional, Savoldelli, Andrea, additional, Fronczek, Frank R., additional, Smith, Kevin M., additional, Genovese, Damiano, additional, Prodi, Luca, additional, and Paolesse, Roberto, additional

Published
2018
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46. In Situ Monitoring of Mechanofluorescence in Polymeric Nanofibers.

Author

Dini, Valentina A., Kiebala, Derek J., Genovese, Damiano, Zaccheroni, Nelsi, Calvino, Céline, Contini, Emma, Weder, Christoph, Schrettl, Stephen, and Gualandi, Chiara

Subjects
*FIBER orientation, *DEFORMATIONS (Mechanics), *FLUORESCENCE spectroscopy, *WEARABLE technology, *SPECTRAL imaging, *EXCIMERS
Abstract

Mechanofluorescent polymers represent a promising class of materials exhibiting fluorescence changes in response to mechanical stimuli. One approach to fabricating these polymers involves incorporating aggregachromic dyes, whose emission properties are governed by the intermolecular distance, which can, in turn, be readily altered by microstructural changes in the surrounding polymer matrix during mechanical deformation. In this study, a mechanofluorescent additive featuring excimer‐forming oligo(p‐phenylene vinylene) dyes (tOPV) is incorporated into electrospun polyurethane fibers, producing mats of fibers with diameters ranging from 300 to 700 nm. The influence of the additive concentration and fiber orientation on the mechanofluorescent response under tensile deformation is investigated. In situ fluorescence spectroscopy and microscopy imaging reveal a strain‐dependent change of the fluorescence color from orange to yellow or green, with a more pronounced response in prealigned fibers. Stresses experienced by the nanofibers during elongation are mapped in real‐time. The data reveal that forces initially concentrate in fibers that are aligned parallel to the applied strain, and only later redistribute as other fibers once they also align. These findings advance the understanding of force transfer within fibrous polymer mats and are expected to facilitate the development of self‐reporting nanofibers for applications in load‐bearing devices, wearable technologies, and mechanochromic textiles. [ABSTRACT FROM AUTHOR]

Published
2024
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47. Hierarchical self-assembly on silicon

Author

Tancini, Francesca, Genovese, Damiano, Montalti, Marco, Cristofolini, Luigi, Nasi, Lucia, Prodi, Luca, and Dalcanale, Enrico

Subjects
Atomic force microscopy -- Usage, Hydrogen bonding -- Analysis, Methyl groups -- Structure, Methyl groups -- Chemical properties, Pyrimidines -- Chemical properties, Semiconductor wafers -- Structure, Semiconductor wafers -- Chemical properties, Chemistry
Abstract

A set of modular components is designed, prepared and combined to produce an innovative method for the self-assembly of large supramolecular structures on silicon wafers. The complete orthogonality of the two interactions has allowed the molecular level control of each step of the solid-state assembly and the response to precise external stimuli.

Published
2010

48. 6-azahemiporphycene: a new member of the porphyrinoid family

Author

Mandoj, Federica, Nardis, Sara, Pomarico, Giuseppe, Stefanelli, Manuela, Schiaffino, Luca, Ercolani, Gianfranco, Prodi, Luca, Genovese, Damiano, Zaccheroni, Nelsi, Fronczek, Frank R., Smith, Kevin M., Xiao Xiao, Jing Shen, Kadish, Karl M., and Paolesse, Roberto

Subjects
Hydrogen bonding -- Chemical properties, Hydrogen bonding -- Structure, Methylene chloride -- Chemical properties, Methylene chloride -- Structure, Nuclear magnetic resonance spectroscopy -- Usage, Oxidation-reduction reaction -- Analysis, Porphyrins -- Chemical properties, Porphyrins -- Structure, X-ray crystallography -- Usage, Chemistry
Published
2009

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