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Machine learning predictions of diffusion in bulk and confined ionic liquids using simple descriptors

Journal Article · · Molecular Systems Design & Engineering
DOI:https://doi.org/10.1039/d3me00033h· OSTI ID:2439910
Ionic liquids have many intriguing properties and widespread applications such as separations and energy storage. However, ionic liquids are complex fluids and predicting their behavior is difficult, particularly in confined environments. We introduce fast and computationally efficient machine learning (ML) models that can predict diffusion coefficients and ionic conductivity of bulk and nanoconfined ionic liquids over a wide temperature range (350–500 K). The ML models are trained on molecular dynamics simulation data for 29 unique ionic liquids as bulk fluids and confined in graphite slit pores. This model is based on simple physical descriptors of the cations and anions such as molecular weight and surface area. Here, we also demonstrate that accurate results can be obtained using only descriptors derived from SMILES (simplified molecular-input line-entry system) codes for the ions with minimal computational effort. This offers a fast and efficient method for estimating diffusion and conductivity of nanoconfined ionic liquids at various temperatures without the need for expensive molecular dynamics simulations.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525
OSTI ID:
2439910
Alternate ID(s):
OSTI ID: 1984898
Report Number(s):
SAND--2024-11607J
Journal Information:
Molecular Systems Design & Engineering, Journal Name: Molecular Systems Design & Engineering Journal Issue: 10 Vol. 8; ISSN 2058-9689
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (91)

Electrochemical Aspects of Ionic Liquids book April 2005
Introduction of an Ionic Liquid into the Micropores of a Metal-Organic Framework and Its Anomalous Phase Behavior journal August 2014
Packing optimization for automated generation of complex system's initial configurations for molecular dynamics and docking journal May 2003
Development and testing of a general amber force field journal January 2004
PACKMOL: A package for building initial configurations for molecular dynamics simulations journal October 2009
Controlling the Mobility of Ionic Liquids in the Nanopores of MOFs by Adjusting the Pore Size: From Conduction Collapse by Mutual Pore Blocking to Unhindered Ion Transport journal August 2022
Thermophysical Properties of Ionic Liquids book January 2009
Specific distributions of anions and cations of an ionic liquid through confinement between graphene sheets journal June 2015
Correlation and Prediction of Dense Fluid Transport Coefficients. IX. Ionic Liquids journal May 2014
Graph theory and molecular orbitals. Total φ-electron energy of alternant hydrocarbons journal December 1972
Large-scale QSAR study of aromatase inhibitors using SMILES-based descriptors journal November 2014
Ionic liquids in gas separation processing journal June 2017
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales journal February 2022
Atom–bond connectivity and the energetic of branched alkanes journal October 2008
On difference of Zagreb indices journal December 2014
Towards predicting liquid fuel physicochemical properties using molecular dynamics guided machine learning models journal December 2022
Combination of ionic liquids with membrane technology: A new approach for CO2 separation journal January 2016
Nano-confined ionic liquid [emim][PF6] between graphite sheets: A molecular dynamics study journal March 2016
A novel correlative approach for ionic liquid thermal conductivities journal June 2017
Development of a group contribution method for estimating surface tension of ionic liquids over a wide range of temperatures journal August 2017
Predicting ionic liquid melting points using machine learning journal August 2018
In silico prediction and experimental verification of ionic liquid refractive indices journal August 2018
Ionic liquids synthesis and applications: An overview journal January 2020
Nanoconfined ionic liquids: A computational study journal December 2020
Quantitative structure-property relationship for predicting the diffusion coefficient of ionic liquids journal March 2022
Diverse applications of ionic liquids: A comprehensive review journal April 2022
Ionic liquids confined in porous matrices: Physicochemical properties and applications journal July 2014
Efficient separation of CO2/CH4 by ionic liquids confined in graphene oxide: A molecular dynamics simulation journal May 2022
NeuroFramework: A package based on neuroevolutionary algorithms to estimate the melting temperature of ionic liquids journal January 2020
Nanoconfined Ionic Liquids journal December 2016
Molecular Simulation Study of the Performance of Supported Ionic Liquid Phase Materials for the Separation of Carbon Dioxide from Methane and Hydrogen journal June 2017
Extensive Databases and Group Contribution QSPRs of Ionic Liquids Properties. 1. Density journal March 2019
Extensive Databases and Group Contribution QSPRs of Ionic Liquids Properties. 2. Viscosity journal August 2019
Fantastic Liquids and Where To Find Them: Optimizations of Discrete Chemical Space journal April 2019
Diffusion under Confinement: Hydrodynamic Finite-Size Effects in Simulation journal June 2017
Using Computationally-Determined Properties for Machine Learning Prediction of Self-Diffusion Coefficients in Pure Liquids journal November 2021
NMR and Theoretical Study of In-Pore Diffusivity of Ionic Liquid–Solvent Mixtures journal June 2022
Prediction of Self-Diffusion in Binary Fluid Mixtures Using Artificial Neural Networks journal June 2022
Molecular and Artificial Neural Networks Modeling of Sorption and Diffusion of Small Alkanes, Alkenes and Their Ternary Mixtures in ZIF-8 at Different Temperatures journal July 2022
Machine Learning Self-Diffusion Prediction for Lennard-Jones Fluids in Pores journal November 2021
Temperature-Induced Molecular Rearrangement of an Ionic Liquid Confined in Nanospaces: An in Situ X-ray Absorption Fine Structure Study journal September 2015
Structural Anomalies and Electronic Properties of an Ionic Liquid under Nanoscale Confinement journal July 2020
Machine Learning-Based Upscaling of Finite-Size Molecular Dynamics Diffusion Simulations for Binary Fluids journal November 2020
Abnormal Enhanced Free Ions of Ionic Liquids Confined in Carbon Nanochannels journal June 2021
Direct Correlation between Ionic Liquid Transport Properties and Ion Pair Lifetimes: A Molecular Dynamics Study journal February 2015
Solid-Like Ordering of Imidazolium-Based Ionic Liquids at Rough Nanostructured Oxidized Silicon Surfaces journal August 2019
Bunching and Immobilization of Ionic Liquids in Nanoporous Metal–Organic Framework journal February 2019
SMILES, a chemical language and information system. 1. Introduction to methodology and encoding rules journal February 1988
SMILES. 2. Algorithm for generation of unique SMILES notation journal May 1989
Densification of Ionic Liquid Molecules within a Hierarchical Nanoporous Carbon Structure Revealed by Small-Angle Scattering and Molecular Dynamics Simulation journal December 2013
Morphology and Melting Behavior of Ionic Liquids inside Single-Walled Carbon Nanotubes journal October 2009
NMR Study of Ion Dynamics and Charge Storage in Ionic Liquid Supercapacitors journal May 2015
Structure and Dynamics of a Confined Ionic Liquid. Topics of Relevance to Dye-Sensitized Solar Cells journal September 2005
A Simple AIMD Approach to Derive Atomic Charges for Condensed Phase Simulation of Ionic Liquids journal August 2012
Pt2Cl82– Dimer Formation of [Bmim]2PtCl4 Ionic Liquid When Confined in Silica Nanopores journal February 2014
Unravelling the Role of the Compressed Gas on Melting Point of Liquid Confined in Nanospace journal March 2012
Morphological Control of Room-Temperature Ionic Liquid Templated Mesoporous Silica Nanoparticles for Controlled Release of Antibacterial Agents journal November 2004
Structure of graphite by neutron diffraction journal November 1975
Materials for electrochemical capacitors journal November 2008
Ionic-liquid materials for the electrochemical challenges of the future journal July 2009
Partial breaking of the Coulombic ordering of ionic liquids confined in carbon nanopores journal September 2017
Applications of ionic liquids in the chemical industry journal January 2008
Ionogels as drug delivery system: one-step sol–gel synthesis using imidazolium ibuprofenate ionic liquid journal January 2010
Ionic liquids studied across different scales: A computational perspective journal January 2012
Molecular dynamics study of the effect of alkyl chain length on melting points of [C n MIM][PF 6 ] ionic liquids journal January 2014
ABCluster: the artificial bee colony algorithm for cluster global optimization journal January 2015
Height-driven structure and thermodynamic properties of confined ionic liquids inside carbon nanochannels from molecular dynamics study journal January 2019
Rapid, comprehensive screening of ionic liquids towards sustainable applications journal January 2019
Artificial neural network prediction of self-diffusion in pure compounds over multiple phase regimes journal January 2021
A review on machine learning algorithms for the ionic liquid chemical space journal January 2021
A generalized machine learning model for predicting ionic conductivity of ionic liquids journal January 2022
Compression of ionic liquid when confined in porous silica nanoparticles journal January 2013
Polymorphic transitions in single crystals: A new molecular dynamics method journal December 1981
Constant pressure molecular dynamics algorithms journal September 1994
Machine learning prediction of self-diffusion in Lennard-Jones fluids journal July 2020
Slow liquid dynamics near solid surfaces: Insights from site-resolved studies of ionic liquids in silica confinement journal February 2022
Conductivity prediction model for ionic liquids using machine learning journal June 2022
How do external forces related to mass and charge affect the structures and dynamics of an ionic liquid? journal May 2022
Symbolic regression development of empirical equations for diffusion in Lennard-Jones fluids journal July 2022
Ionic liquid confined in silica nanopores: molecular dynamics in the isobaric–isothermal ensemble journal February 2014
ChemoPy: freely available python package for computational biology and chemoinformatics journal March 2013
Rapid estimation of elastic constants by molecular dynamics simulation under constant stress journal April 2004
How Stickiness Can Speed Up Diffusion in Confined Systems journal May 2022
Ionic correlations and failure of Nernst-Einstein relation in solid-state electrolytes journal July 2017
Solvent-accessible surfaces of proteins and nucleic acids journal August 1983
The Second Hyper-Zagreb Coindex of Chemical Graphs and Some Applications journal November 2021
Mordred: a molecular descriptor calculator journal February 2018
Application of polymer-based membranes containing ionic liquids in membrane separation processes: a critical review journal May 2017
The Generalized Zagreb Index of Some Carbon Structures journal July 2018
The Ionic Liquid Property Explorer: An Extensive Library of Task-Specific Solvents journal June 2019
The Electrical Conductivity of Ionic Liquids: Numerical and Analytical Machine Learning Approaches journal October 2022

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