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Multifaceted polymer coated, gold nanoparticles

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From Experiment to Kinetic and Thermodynamic Modelling of Precipitation: Examples of Calcium Silicate Hydrate (C-S-H) and Gold Nanoparticles

Mohammad Reza Andalibi

Precipitation is a process wherein a solid phase forms from a solution. Precipitation is at the heart of many industries producing pharmaceuticals, catalysts, ceramics, and nanoparticles. In addition to being a material synthesis route, precipitation has i ...

EPFL2019

Cellular Uptake and Intracellular Trafficking of Poly(N-(2-Hydroxypropyl) Methacrylamide)

Anders Meibom, Harm-Anton Klok, Graham Knott, Stéphane Laurent Escrig, Olivier Burri, Arne Seitz, Romain Guiet, Claudia Battistella

Cellular uptake and intracellular trafficking of polymer conjugates or polymer nanoparticles is typically monitored using fluorescence-based techniques such as confocal microscopy. While these methods have provided a wealth of insight into the internalizat ...

American Chemical Society2019

Synthesis and Characterization of Amphiphilic Gold Nanoparticles

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

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

Probing the interaction of nanoparticles with small molecules in real time via quartz crystal microbalance monitoring

Stefan Guldin, Nikolaos Nianias

Despite extensive advances in the field of molecular recognition, the real-time monitoring of small molecule binding to nanoparticles (NP) remains a challenge. To this end, we report on a versatile approach, based on quartz crystal microbalance with dissip ...

2019

Gold Raspberry-Like Colloidosomes Prepared at the Water-Nitromethane Interface

Hubert Girault, Pekka Eero Peljo, Evgeny Smirnov

Here, we propose a simple shake-flask method to produce micron-size colloidosomes from a liquid-liquid interface functionalized with a gold nanoparticle film. A step-by-step extraction process of an organic phase partially miscible with water led to the fo ...

2018

Nanoparticle on mirror plasmonic nanostructure for molecular cavity optomechanics

Christophe Marcel Georges Galland, Santiago Tarrago Velez, Aqeel Ahmed

The plasmonic response of gold can be utilized to enhance the incident electromagnetic (EM) field by several orders of magnitude. When a gold nanoparticle is placed in close proximity to a gold film, the incident field can excite a deeply confined plasmon, ...

IEEE2018

Functionalization of iron oxide nanoparticles with methacrylate-based monomers for preparation of nanocomposites

Heinrich Hofmann

Nanocomposites with a high and uniform loading of magnetic nanoparticles are very desirable for various applications. In this study, a simple and scalable route for preparing nanocomposites with a high and uniform loading of magnetic nanoparticles is prese ...

AMER INST PHYSICS2018

Hierarchical porous structure

Dominique Pioletti, Pierre-Etienne Bourban, Matteo Gregorio Modesto Marascio

Cellular thermoplastic structures with hierarchical multi-scale porosity (preferably 1-300 µm micro-porosity to 0.3-10 mm macro-porosity) are produced from an integrated approach of 3D printing, preferably by Fused Deposition Modeling (FDM), and of supercr ...

2018

Size control of self-organized gold nanoparticles on nanopatterned single crystal diamond

Olivier Martin, Niels Quack, Christian Santschi, Marcell Kristof Kiss, Sichen Mi

Surface patterning using plasmonic nanoparticles has attracted increasing interest owing to their wide use in sensing, imaging and medical applications. In this report we demonstrate bottom-up engineering of size distribution of gold nanoparticles (AuNPs) ...

IEEE2018

Electrochemical Dynamics of a Single Platinum Nanoparticle Collision Event for the Hydrogen Evolution Reaction

Pekka Eero Peljo, Haiqiang Deng

Chronoamperometry was used to study the dynamics of Pt nanoparticle (NP) collision with an inert ultramicroelectrode via electrocatalytic amplification (ECA) towards hydrogen evolution reaction. First, ECA and dynamic light scattering (DLS) results reveal ...

Wiley-VCH Verlag GmbH2018

The structure and binding mode of citrate in the stabilization of gold nanoparticles

David Lyndon Emsley, Jasmine Viger-Gravel

Elucidating the binding mode of carboxylate-containing ligands to gold nanoparticles (AuNPs) is crucial to understand their stabilizing role. A detailed picture of the three-dimensional structure and coordination modes of citrate, acetate, succinate and gl ...

Nature Publishing Group2017

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

Assemblies of gold nanoparticles at liquid-liquid interfaces : from liquid optics to electrocatalysis

Evgeny Smirnov

The interface between two immiscible liquids, i.e. oil and water, is an extremely attractive scaffold to self-assemble nanoparticles (NP) in arranged films. The liquid-liquid interfaces (LLIs) are defect-free and pristine by the nature, they are transparen ...

EPFL2017

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