Publications associées à Synthesis and Characterization of Janus Gold Nanoparticles

Molecular insights into the electrical double layer of colloidal oxide particles obtained through second harmonic scattering

Photocatalytic applications play an essential role in the search for alternative energy sources and environmental decontamination techniques. It is of fundamental interest to understand on a molecular level the aqueous solid/liquid interface, where photoca ...

EPFL2022

Surface Potential and Interfacial Water Order at the Amorphous TiO2 Nanoparticle/Aqueous Interface

Arianna Marchioro, Sylvie Roke, Marie Bischoff

Colloidal nanoparticles exhibit unique size-dependent properties differing from their bulk counterpart, which can be particularly relevant for catalytic applications. To optimize surface-mediated chemical reactions, the understanding of the microscopic str ...

2020

Multidimensional Characterization of Mixed Ligand Nanoparticles Using Small Angle Neutron Scattering

Francesco Stellacci, Quy Ong Khac, Stefan Guldin, Zhi Luo, Ye Yang

The properties of ligand protected gold nanoparticles are determined by the synergistic interplay of their structural components, including the metal core, the ligand shell, and the solvation layer. However, the simultaneous characterization of all these c ...

AMER CHEMICAL SOC2019

Synthesis and Characterization of Amphiphilic Gold Nanoparticles

Francesco Stellacci, Paulo Henrique Jacob Silva, Zekiye Pelin Güven, Zhi Luo, Samuel Thomas Jones, Urszula Beata Cendrowska, Matteo Gasbarri

Gold nanoparticles covered with a mixture of 1-octanethiol (OT) and 11-mercapto-1-undecane sulfonic acid (MUS) have been extensively studied because of their interactions with cell membranes, lipid bilayers, and viruses. The hydrophilic ligands make these ...

JOURNAL OF VISUALIZED EXPERIMENTS2019

Advanced characterization methods for self-assembled organization on nanoparticles

Zhi Luo

The complex organizations of amino acid residues on protein surfaces give rise to a wide space of functions for proteins. Great efforts are devoted in biology to understand such structure-property relationships. Many advanced characterization techniques ha ...

EPFL2018

Characterization of Ligand Shell for Mixed-Ligand Coated Gold Nanoparticles

Francesco Stellacci, Quy Ong Khac, Zhi Luo

Gold nanoparticles owe a large number of their properties to their ligand shell. Indeed, many researchers routinely use mixtures of ligand molecules for their nanoparticles to impart complex property sets. It has been shown that the morphology of ligand sh ...

American Chemical Society2017

Investigation of Key Parameters Affecting Ion-Capturing Abilities of Mixed-Ligand Protected Gold Nanoparticles

Elif Ertem Bekdemir

Over the past decades, there has been a dramatic change in the types and amounts of metal ions in the biosphere, since we have introduced huge amount of metal waste into our environment in the course of industrialization of our society. Most of the metal c ...

EPFL2017

Highly selective immobilized bimetallic Ni-Au nanoparticle catalyst for the partial hydrogenation of m-dinitrobenzene

Lioubov Kiwi, Paul Joseph Dyson, Oliver Anthony Beswick, Fernando Cardenas Lizana, Daniel André Samuel Lamey

Transition metal nanoparticles (NPs) are extensively used as catalysts for a wide and diverse range of organic transformations when immobilized on appropriate solid supports. We describe the development of a highly active and highly selective heterogeneous ...

Elsevier Science Bv2017

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

High-Resolution Scanning Tunneling Microscopy Characterization of Mixed Monolayer Protected Gold Nanoparticles

Christoph Renner, Francesco Stellacci, Quy Ong Khac, Javier Reguera Gomez, Mauro Moglianetti, Paulo Henrique Jacob Silva, Kellen Michael Harkness

Gold nanoparticles protected by a binary mixture of thiolate molecules have a ligand shell that can spontaneously separate into nanoscale domains. Complex morphologies arise in such ligand shells, including striped, patchy, and Janus domains. Characterizat ...

American Chemical Society2013

Evolution of Langmuir Film of Nanoparticles Through Successive Compression Cycles

Francesco Stellacci, Jiwon Kim

The success of nanoparticle-based devices will need reliable fabrication methods for well-defined, defect-free self-assembled structures of nanoparticles (NPs). NP self-assembly is a process governed by an interplay between many inter-particle interactions ...

2011

Fabrication of Functional Silicon Surfaces using Metallic Nanostructures Produced by Block Copolymer Self-Assembly

Li Wang

Self-assembly is the autonomous organization of components into patterns or structures without human intervention. At the molecular level, self-assembly usually involves non-covalent interactions of various natures, such as van der Waals, electrostatic and ...

EPFL2011