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Francesco Stellacci

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Publications associées (214)

High-Surface-Area Porous Platinum Electrodes for Enhanced Charge Transfer

Michael Graetzel, Marcel Roland Schreier, Francesco Stellacci, Aswani Yella, Yelin Hu, Morgan Mertens Stefik, Stefan Guldin

Cobalt-based electrolytes are highly tunable and have pushed the limits of dye-sensitized solar cells, enabling higher open-circuit voltages and new record efficiencies. However, the performance of these electrolytes and a range of other electrolytes suffe ...

Wiley-V C H Verlag Gmbh2014

On the role of cell entry mechanism in cytotoxicity

Francesco Stellacci

Amer Chemical Soc2014

Characterization of the ligand shell of noble metal nanoparticles and applications to sensing

Francesco Stellacci

Amer Chemical Soc2014

Lipid tail protrusions mediate the insertion of nanoparticles into model cell membranes

Francesco Stellacci, Kislon Voitchovsky, Maria Ricci, Javier Reguera Gomez, Paulo Henrique Jacob Silva

Recent work has demonstrated that charged gold nanoparticles (AuNPs) protected by an amphiphilic organic monolayer can spontaneously insert into the core of lipid bilayers to minimize the exposure of hydrophobic surface area to water. However, the kinetic ...

Nature Publishing Group2014

Curvature-dependent wetting of perfluorinated monolayers

Francesco Stellacci, Kellen Michael Harkness

Amer Chemical Soc2014

Advances in the characterization of mixed self-assembled monolayers on curved surfaces

Francesco Stellacci

Amer Chemical Soc2014

Enhancing Radiotherapy by Lipid Nanocapsule-Mediated Delivery of Amphiphilic Gold Nanoparticles to Intracellular Membranes

Francesco Stellacci, Randy Patrick Carney, Ye Yang

Amphiphilic gold nanoparticles (amph-NPs), composed of gold cores surrounded by an amphiphilic mixed organic ligand shell, are capable of embedding within and traversing lipid membranes. Here we describe a strategy using crosslink-stabilized lipid nanocaps ...

American Chemical Society2014

A general mechanism for intracellular toxicity of metal-containing nanoparticles

Francesco Stellacci, Randy Patrick Carney

The assessment of the risks exerted by nanoparticles is a key challenge for academic, industrial, and regulatory communities worldwide. Experimental evidence points towards significant toxicity for a range of nanoparticles both in vitro and in vivo. Worldw ...

Royal Society of Chemistry2014

Change of Luminescence Properties of Europium Ions Captured by Mixed-Ligand Silver Nanoparticles

Francesco Stellacci, Eun Seon Cho, Elif Ertem Bekdemir

We present herein silver nanoparticles about 4 nm in diameter coated with a binary mixture of 1-octanethiol and 2-(2-{2-[(6-mercaptohexyl)oxy]ethoxy}ethoxy)ethanol. These particles show an affinity towards optically active Eu3+ ions. The effect of the nano ...

Wiley-V C H Verlag Gmbh2014

Comparative STM studies of mixed ligand monolayers on gold nanoparticles in air and in 1-phenyloctane

Francesco Stellacci, Quy Ong Khac, Javier Reguera Gomez, Shun Zhao

Scanning tunnelling microscopy (STM) studies have found stripe-like domains on gold nanoparticles (NPs) coated with certain binary mixtures of ligand molecules. The majority of these NPs' properties have been investigated for particles in solvents. Yet, mo ...

Royal Society of Chemistry2014

Scanning tunneling microscopy and small angle neutron scattering study of mixed monolayer protected gold nanoparticles in organic solvents

Francesco Stellacci, Quy Ong Khac, Javier Reguera Gomez, Mauro Moglianetti, Marta Mameli, Kellen Michael Harkness

When a binary mixture of ligand molecules is used to coat gold nanoparticles, stripe-like domains can occur. These nanodomains confer nanoparticles unique structure-dependent properties. The domain structure has been characterized primarily using scanning ...

Royal Soc Chemistry2014

Effects of Surface Compositional and Structural Heterogeneity on Nanoparticle-Protein Interactions: Different Protein Configurations

Francesco Stellacci, Randy Patrick Carney

As nanoparticles (NPs) enter into biological systems, they are immediately exposed to a variety and concentration of proteins. The physicochemical interactions between proteins and NPs are influenced by the surface properties of the NPs. To identify the ef ...

American Chemical Society2014

Identifying champion nanostructures for solar water-splitting

Michael Graetzel, Maurin Cornuz, Cécile Hébert, Scott Charles Warren, Francesco Stellacci, Kislon Voitchovsky

Charge transport in nanoparticle-based materials underlies many emerging energy-conversion technologies, yet assessing the impact of nanometre-scale structure on charge transport across micrometre-scale distances remains a challenge. Here we develop an app ...

Nature Publishing Group2013

In-situ Investigation of Adsorption of Dye and Coadsorbates on TiO2 Films Using QCM-D, Fluorescence and AFM Techniques

Michael Graetzel, Nicolas Tétreault, Francesco Stellacci, Kislon Voitchovsky, Hauke Arne Harms

Simultaneous adsorption of dye molecules and coadsorbates is important for the fabrication of high-efficiency dyesensitized solar cells, but its mechanism is not well understood. Herein, we use a quartz crystal microbalance with dissipation technique (QCM- ...

Spie-Int Soc Optical Engineering2013

Effect of Particle Diameter and Surface Composition on the Spontaneous Fusion of Monolayer-Protected Gold Nanoparticles with Lipid Bilayers

Francesco Stellacci, Randy Patrick Carney, Ye Yang

Anionic, monolayer-protected gold nanoparticles (AuNPs) have been shown to nondisruptively penetrate cellular membranes. Here, we show that a critical first step in the penetration process is potentially the fusion of such AuNPs with lipid bilayers. Free e ...

American Chemical Society2013

Electrical Method to Quantify Nanoparticle Interaction with Lipid Bilayers

Francesco Stellacci, Kislon Voitchovsky, Randy Patrick Carney, Paulo Henrique Jacob Silva, Tamara Michael Carney

Understanding as well as rapidly screening the interaction of nanoparticles with cell membranes is of central importance for biological applications such as drug and gene delivery. Recently, we have shown that "striped" mixed-monolayer-coated gold nanopart ...

American Chemical Society2013

Low-Voltage Self-Assembled Monolayer Field-Effect Transistors on Flexible Substrates

Francesco Stellacci, Kislon Voitchovsky, Juan José Segura Sugranes, Thomas Schmaltz

Self-assembled monolayer field-effect transistors (SAMFETs) of BTBT functionalized phosphonic acids are fabricated. The molecular design enables device operation with charge carrier mobilities up to 10-2 cm 2 V-1 s-1 and for the first time SAMFETs which op ...

Wiley-Blackwell2013

Droplets Out of Equilibrium

Holger Frauenrath, Francesco Stellacci

American Association for the Advancement of Science2013

Advances in Janus Nanoparticles

Francesco Stellacci, Javier Reguera Gomez

The design and synthesis of Janus nanoparticles has attracted great scientific interest in recent years. Novel optical, electronic, magnetic, and superficial properties emerge from their dimensions and unique morphology at the nanoscale. Additional propert ...

Swiss Chemical Soc2013

Ligand-Shell-Directed Assembly and Depolymerization of Patchy Nanoparticles

Francesco Stellacci, Yue Wang

Wiley-Blackwell2013

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