Recherche

Afficher tous les résultats pour

Accueil

Personne

Francesco Stellacci

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (214)

Order/Disorder Dynamics in a Dodecanethiol-Capped Gold Nanoparticles Supracrystal by Small-Angle Ultrafast Electron Diffraction

Fabrizio Carbone, Francesco Stellacci, Giulia Fulvia Mancini, Javier Reguera Gomez, Francesco Pennacchio, Tatiana Latychevskaia

The design and the characterization of functionalized gold nanoparticles supracrystals require atomically resolved information on both the metallic core and the external organic ligand shell. At present, there is no known approach to characterize simultane ...

American Chemical Society2016

Synthesis and characterization of mixed ligand chiral nanoclusters

Francesco Stellacci, Zekiye Pelin Güven, Kellen Michael Harkness

Chiral mixed ligand silver nanoclusters were synthesized in the presence of a chiral and an achiral ligand. While the chiral ligand led mostly to the formation of nanoparticles, the presence of the achiral ligand drastically increased the yield of nanoclus ...

Royal Society of Chemistry2016

Gold Nanostar-Coated Polystyrene Beads as Multifunctional Nanoprobes for SERS Bioimaging

Francesco Stellacci, Ahmet Bekdemir

Hybrid colloidal nanocomposites comprising polystyrene beads and plasmonic gold nanostars are reported as multifunctional optical nanoprobes. Such self-assembled structures are excellent Raman enhancers for bioapplications as they feature plasmon modes in ...

American Chemical Society2016

Two-Dimensional Nanoparticle Supracrystals: A Model System for Two-Dimensional Melting

Francesco Stellacci, Jiwon Kim

In a Langmuir trough, successive compression cycles can drive a two-dimensional (2D) nanoparticle supracrystal (NPSC) closer to its equilibrium structure. Here, we show a series of equilibrated 2D NPSCs consisting of gold NPs of uniform size, varying solel ...

American Chemical Society2016

A silica-based magnetic platform decorated with mixed ligand gold nanoparticles: a recyclable catalyst for esterification reactions

Francesco Stellacci, Randy Patrick Carney, Elif Ertem Bekdemir, Emma-Rose Janecek

A novel and convenient synthetic strategy for the preparation of magnetically responsive silica nanospheres decorated with mixed ligand protected gold nanoparticles is described. Gold nanoparticles are attached to the silica surface via stable amide bond f ...

Royal Society of Chemistry2016

Additives for vaccine storage to improve thermal stability of adenoviruses from hours to months

Francesco Stellacci, Randy Patrick Carney, Paulo Henrique Jacob Silva, Valeria Cagno

Up to 80% of the cost of vaccination programmes is due to the cold chain problem (that is, keeping vaccines cold). Inexpensive, biocompatible additives to slow down the degradation of virus particles would address the problem. Here we propose and character ...

Nature Publishing Group2016

Thermally-nucleated self-assembly of water and alcohol into stable structures at hydrophobic interfaces

Francesco Stellacci, Kislon Voitchovsky, Michele Ceriotti, Daniele Giofré

At the interface with solids, the mobility of liquid molecules tends to be reduced compared with bulk, often resulting in increased local order due to interactions with the surface of the solid. At room temperature, liquids such as water and methanol can f ...

Nature Publishing Group2016

Phase transfer based chemical sensing

Francesco Stellacci, Stefan Guldin, Yang Ye

The present invention relates to a phase transfer based chemical sensing, specifically to a method for selective separation, detection and quantification of a polycyclic organic compound in a sample and a method for selective extraction of a polycyclic org ...

2016

A centrifugation-based physicochemical characterization method for the interaction between proteins and nanoparticles

Francesco Stellacci, Ahmet Bekdemir

Nanomedicine requires in-depth knowledge of nanoparticle-protein interactions. These interactions are studied with methods limited to large or fluorescently labelled nanoparticles as they rely on scattering or fluorescence-correlation signals. Here, we hav ...

Nature Publishing Group2016

In-situ mapping of the molecular arrangement of amphiphilic dye molecules at the TiO2 surface of dye sensitized solar cells

Michael Graetzel, Ursula Röthlisberger, Ivano Tavernelli, Nicolas Tétreault, Negar Ashari Astani, Francesco Stellacci, Kislon Voitchovsky, Hauke Arne Harms

Amphiphilic sensitizers are central to the function of dye-sensitized solar cells. It is known that the cells performance depends on the molecular arrangement and the density of the dye on the semiconductor surface, but a molecular-level picture of the cel ...

2015

Contact angle and adsorption energies of nanoparticles at the air-liquid interface determined by neutron reflectivity and molecular dynamics

Francesco Stellacci, Javier Reguera Gomez, Mauro Moglianetti, Evgeniy Ponomarev

Understanding how nanomaterials interact with interfaces is essential to control their self-assembly as well as their optical, electronic, and catalytic properties. We present here an experimental approach based on neutron reflectivity (NR) that allows the ...

Royal Society of Chemistry2015

Future Perspectives Towards the Use of Nanomaterials for Smart Food Packaging and Quality Control

Francesco Stellacci

In this Progress Report some recent trends and future perspectives towards the use of nanomaterials for smart food packaging and quality control of food are given. The examples and discussion are meant to illustrate the potential use of nanotechnology for ...

Wiley-Blackwell2015

Co-precipitation of oppositely charged nanoparticles: the case of mixed ligand nanoparticles

Francesco Stellacci, Maxime Tomasz Szybowski, Javier Reguera Gomez, Mauro Moglianetti, Evgeniy Ponomarev

Colloid stability is of high importance in a multitude of fields ranging from food science to biotechnology. There is strong interest in studying the stability of small particles (of a size of a few nanometres) with complex surface structures, that make th ...

Institute of Physics2015

Conductivity in organic semiconductors hybridized with the vacuum field

Francesco Stellacci

Much effort over the past decades has been focused on improving carrier mobility in organic thin-film transistors by optimizing the organization of the material or the device architecture. Here we take a different path to solving this problem, by injecting ...

Nature Publishing Group2015

Growth and dissolution of calcite in the presence of adsorbed stearic acid

Francesco Stellacci, Georg Fantner, Kislon Voitchovsky, Blake William Erickson, Maria Ricci, Juan José Segura Sugranes

The interaction of organic molecules with the surface of calcite plays a central role in many geochemical, petrochemical and industrial processes and in biomineralization. Adsorbed organics, typically fatty acids, can interfere with the evolution of calcit ...

American Chemical Society2015

Nanosensors for early cancer detection and for therapeutic drug monitoring

Francesco Stellacci

The use of nanotechnology for drug delivery in cancer therapy has raised high expectations. Additionally, the use of nanomaterials in sensors to extract and detect tumor specific biomarkers, circulating tumor cells, or extracellular vesicles shed by the tu ...

Future Medicine2015

Isolation and Characterization of Monodisperse Core Shell Nanoparticle Fractions

Raffaele Mezzenga, Francesco Stellacci, Randy Patrick Carney

Monodispersity is a key property to control the self-assembly of colloidal particles, and is typically reached after fine-tuning of the synthesis conditions. Monodisperse particle fractions can also be separated from polydisperse suspensions via ultracentr ...

American Chemical Society2015

Influence of the glycocalyx and plasma membrane composition on amphiphilic gold nanoparticle association with erythrocytes

Francesco Stellacci, Randy Patrick Carney, Paulo Henrique Jacob Silva, Ye Yang, Ahmet Bekdemir

Erythrocytes are attractive as potential cell-based drug carriers because of their abundance and long life-span in vivo. Existing methods for loading drug cargos into erythrocytes include hypotonic treatments, electroporation, and covalent attachment onto ...

Royal Society of Chemistry2015

Response to "Critical Assessment of the Evidence for Striped Nanoparticles"

Francesco Stellacci, Quy Ong Khac

Stirling et al., (10.1371/journal.pone.0108482) presented an analysis on some of our publications on the formation of stripe-like domains on mixed-ligand coated gold nanoparticles. The authors shed doubts on some of our results however no valid argument is ...

Public Library of Science2015

Antibacterial activity of silver nanoparticles: A surface science insight

Francesco Stellacci, Benjamin Timothée Nicolas Le Ouay

Silver nanoparticles constitute a very promising approach for the development of new antimicrobial systems. Nanoparticulate objects can bring significant improvements in the antibacterial activity of this element, through specific effect such as an adsorpt ...

Elsevier2015

Page 8 sur 11