Molecular Dynamics Simulations of Metal Nanoparticles in Deep Eutectic Solvents

2018 ◽  
Vol 122 (31) ◽  
pp. 18029-18039 ◽  
Author(s):  
Mert Atilhan ◽  
Santiago Aparicio
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Metal Nanoparticles ◽  
Deep Eutectic Solvents ◽  
Dynamics Simulations

scholarly journals Dispersion state phase diagram of citrate-coated metallic nanoparticles in saline solutions

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Sebastian Franco-Ulloa ◽  
Giuseppina Tatulli ◽  
Sigbjørn Løland Bore ◽  
Mauro Moglianetti ◽  
Pier Paolo Pompa ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Strength ◽  
Molecular Dynamics Simulations ◽  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Free Energy Calculations ◽  
Coarse Grained ◽  
Solvent Accessible Surface Area ◽  
Dispersion State ◽  
Dynamics Simulations

Abstract The fundamental interactions underlying citrate-mediated chemical stability of metal nanoparticles, and their surface characteristics dictating particle dispersion/aggregation in aqueous solutions, are largely unclear. Here, we developed a theoretical model to estimate the stoichiometry of small, charged ligands (like citrate) chemisorbed onto spherical metallic nanoparticles and coupled it with atomistic molecular dynamics simulations to define the uncovered solvent-accessible surface area of the nanoparticle. Then, we integrated coarse-grained molecular dynamics simulations and two-body free energy calculations to define dispersion state phase diagrams for charged metal nanoparticles in a range of medium’s ionic strength, a known trigger for aggregation. Ultraviolet-visible spectroscopy experiments of citrate-capped nanocolloids validated our predictions and extended our results to nanoparticles up to 35 nm. Altogether, our results disclose a complex interplay between the particle size, its surface charge density, and the ionic strength of the medium, which ultimately clarifies how these variables impact colloidal stability.

scholarly journals Impact of deep eutectic solvents (DESs) and individual DES components on alcohol dehydrogenase catalysis: Connecting experimental data and molecular dynamics simulations

2021 ◽  
Author(s):  
Jan Philipp Bittner ◽  
Ningning Zhang ◽  
Lei Huang ◽  
Pablo Dominguez de Maria ◽  
Sven Jakobtorweihen ◽  
...  
Keyword(s):  
Experimental Data ◽  
Molecular Dynamics ◽  
Alcohol Dehydrogenase ◽  
Molecular Dynamics Simulations ◽  
Enzyme Catalysis ◽  
Deep Eutectic Solvents ◽  
Knowledge Based ◽  
Dynamics Simulations ◽  
The Impact ◽  
Knowledge Based Design

For a knowledge-based design of enzyme catalysis in deep eutectic solvents (DESs), the influence of the DESs properties (e.g., water activity, viscosity), and the impact of DESs and their individual...

scholarly journals Ammonium based stabilizers effectively counteract urea-induced denaturation in a small protein: insights from molecular dynamics simulations

RSC Advances ◽  
2017 ◽  
Vol 7 (83) ◽  
pp. 52888-52906 ◽  
Author(s):  
Soham Sarkar ◽  
Soumadwip Ghosh ◽  
Rajarshi Chakrabarti
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Molecular Dynamics Simulations ◽  
Room Temperature ◽  
Conformational Stability ◽  
Deep Eutectic Solvents ◽  
Room Temperature Ionic Liquids ◽  
Small Protein ◽  
Dynamics Simulations

Room temperature ionic liquids (IL) and deep eutectic solvents (DES) are known to aid the conformational stability and activity of proteins and enzymes in aqueous solutions.

Sign in / Sign up

Export Citation Format

Share Document