1
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McCready C, Sladekova K, Conroy S, Gomes JR, Fletcher AJ, Jorge M. Quantifying the Uncertainty of Force Field Selection on Adsorption Predictions in MOFs. J Chem Theory Comput 2024; 20:4869-4884. [PMID: 38818701 PMCID: PMC11171284 DOI: 10.1021/acs.jctc.4c00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 06/01/2024]
Abstract
Comparisons between simulated and experimental adsorption isotherms in MOFs are fraught with challenges. On the experimental side, there is significant variation between isotherms measured on the same system, with a significant percentage (∼20%) of published data being considered outliers. On the simulation side, force fields are often chosen "off-the-shelf" with little or no validation. The effect of this choice on the reliability of simulated adsorption predictions has not yet been rigorously quantified. In this work, we fill this gap by systematically quantifying the uncertainty arising from force field selection on adsorption isotherm predictions. We choose methane adsorption, where electrostatic interactions are negligible, to independently study the effect of the framework Lennard-Jones parameters on a series of prototypical materials that represent the most widely studied MOF "families". Using this information, we compute an adsorption "consensus isotherm" from simulations, including a quantification of uncertainty, and compare it against a manually curated set of experimental data from the literature. By considering many experimental isotherms measured by different groups and eliminating outliers in the data using statistical analysis, we conduct a rigorous comparison that avoids the pitfalls of the standard approach of comparing simulation predictions to a single experimental data set. Our results show that (1) the uncertainty in simulated isotherms can be as large as 15% and (2) standard force fields can provide reliable predictions for some systems but can fail dramatically for others, highlighting systematic shortcomings in those models. Based on this, we offer recommendations for future simulation studies of adsorption, including high-throughput computational screening of MOFs.
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Affiliation(s)
- Connaire McCready
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
| | - Kristina Sladekova
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
| | - Stuart Conroy
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
| | - José R.
B. Gomes
- CICECO
− Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal
| | - Ashleigh J. Fletcher
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
| | - Miguel Jorge
- Department
of Chemical and Process Engineering, University
of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
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2
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Roy D, Kovalenko A. Molecular Simulations of Liquid Aliphatic Carboxylic Acids (C1-C6) using the 3D-RISM-KH Molecular Solvation Theory. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Bottoms CM, Stein GE, Doxastakis M. Accelerated Diffusion Following Deprotection in Chemically Amplified Resists. J Phys Chem B 2022; 126:6562-6574. [PMID: 35984912 DOI: 10.1021/acs.jpcb.2c03775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polymeric chemically amplified resists (CARs) are critical materials for high-throughput lithographic processes. A photoactivated acid-anion catalyst changes the polymer's solubility via a deprotection reaction, which enables pattern development through selective dissolution. To capture observed reaction kinetics, reaction-diffusion models employ a catalyst diffusivity that is accelerated by reaction. However, the microscopic origin and factors contributing to this phenomena remain unclear. Herein, we employ detailed atomistic molecular dynamics simulations to examine the impact of protecting group removal and material relaxation on catalyst mobility. We report data on polymer density, catalyst dispersion, excess free volume, and segmental dynamics with increasing time/extent of deprotection. We then propose simple kinetic Monte Carlo algorithms that can describe both molecular dynamics simulations of deprotection reactions and experimental data.
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Affiliation(s)
- Christopher M Bottoms
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Gila E Stein
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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4
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Panwar P, Schweissinger E, Maier S, Hilf S, Sirak S, Martini A. Effect of polymer structure and chemistry on viscosity index, thickening efficiency, and traction coefficient of lubricants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Arriola González KR, Armas-Perez JC, Vázquez-Núñez E, Cárdenas JC, Mendoza A, Reyes-Aguilera JA, Figueroa-Gerstenmaier S. Determination of liquid-vapor equilibrium and critical properties of fatty acids for biodiesel production through molecular dynamics. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:214002. [PMID: 35234670 DOI: 10.1088/1361-648x/ac5996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
In recent years, biodiesel production has emerged as an option for renewable and green fuel generation due to the constant reduction of fossil fuel reservoirs. Biofuels as biodiesel also show valuable attributes, environmentally speaking, due to their low environmental impact, contributing to the achievement of sustainability. However, costs are not allowable for large-scale production. Thereby, several novel processes have been proposed (e.g., reactive distillation) to solve this issue. An inconvenience for the development of these processes is the little information in the literature about the critical properties of fatty acids, which are precursors of biodiesel. Determination of critical properties for fatty acids through experimentation is difficult. The reason is that fatty acids tend to self-associate (to dimerize) due to carboxylic groups presence through hydrogen bonds, and consequently, have higher boiling points than other compounds of similar molecular mass (e.g., hydrocarbons, esters). Therefore, alternative methods for this determination are required. One choice is the group-contribution method, which is based on the structure of the molecule; however, results can significantly vary among different group-contribution approaches. Another alternative (and the focus of this research) for the determination of these properties is molecular simulation techniques. In this work, the liquid-vapor equilibrium as a function of temperature and the surface tension of three pure fatty acids of long chain (linoleic, oleic, and palmitic acid) have been calculated. Simulations have been performed by molecular dynamics using the method of direct determination of phase coexistence with the software GROMACS; in which the transferable potentials for phase equilibria united atom forcefield (TraPPE-UA) have been implemented for these specific molecules. Orthobaric densities and surface tension values have been reported at temperatures near the critical point (from 650 K to 800 K). Critical properties (temperature, pressure, density) have been extrapolated from trajectories obtained in these simulations using scaling law relations. Critical properties for these compounds are not available experimentally, therefore, group contribution calculations from the literature were used as a reference. In this comparison, the palmitic acid properties calculated in this work, show the best agreement among the three substances investigated.
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Affiliation(s)
- Kevin R Arriola González
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - Julio C Armas-Perez
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - Edgar Vázquez-Núñez
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - José Carlos Cárdenas
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - Angeles Mendoza
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - José Antonio Reyes-Aguilera
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - Susana Figueroa-Gerstenmaier
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Lomas del Bosque 103, Col. Lomas del Campestre, León, Guanajuato, 37150, Mexico
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6
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Feria E, Algaba J, Míguez JM, Mejía A, Blas FJ. Molecular dynamics of liquid-liquid equilibrium and interfacial properties of aqueous solutions of methyl esters. Phys Chem Chem Phys 2022; 24:5371-5382. [PMID: 35170596 DOI: 10.1039/d1cp05346a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the liquid-liquid phase equilibria and interfacial properties of methyl ester + water binary mixtures are determined at atmospheric pressure and from 278 to 358 K combining the direct coexistence technique and molecular dynamics simulations. Methyl esters are modelled using new parametrizations based on the united atom TraPPE model force field proposed recently by us [E. Feria, J. Algaba, J. M. Míguez, A. Mejía, P. Gómez-Álvarez and F. J. Blas, Phys. Chem. Chem. Phys., 2019, 22, 4974-4983] that are able to predict the vapour-liquid interfacial properties of pure methyl esters with high accuracy. In the case of water, we consider the well-known TIP4P/2005 model, the most popular rigid and non-polarizable model to describe the interfacial properties of pure water. The simulations are performed using the direct coexistence technique in the isothermal-isobaric or NPzT ensemble in combination with molecular dynamics. We obtain density profiles, temperature-densities and temperature-composition projections of the phase diagrams, and interfacial tensions. The liquid-liquid interfacial tension is calculated from the normal and tangential components of the pressure tensor according to the mechanical virial route. We pay attention particularly to the ability of the molecular models in predicting the experimental behavior of the systems. Simulation results are able to account for the liquid-liquid phase equilibria of these binary mixtures, in good agreement with the experimental data taken from the literature. Unfortunately, experimental values for interfacial tensions are substantially overestimated by predictions from computer simulations in all cases. To our knowledge, this is the first time that the liquid-liquid phase equilibrium and interfacial properties of methyl ester + water mixtures have been predicted from computer simulations.
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Affiliation(s)
- Esther Feria
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, Huelva 21007, Spain.
| | - Jesús Algaba
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - José Manuel Míguez
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, Huelva 21007, Spain.
| | - Andrés Mejía
- Laboratorio de Cohesión, Departamento de Ingeniería Química, Universidad de Concepcion, POB 160-C, Correo 3, Chile
| | - Felipe J Blas
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, Huelva 21007, Spain.
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7
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Prasad S, Gupta M. Solvation of gold nanoparticles passivated with functionalized alkylthiols: A molecular dynamics study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Bottoms CM, Terlier T, Stein GE, Doxastakis M. Ion Diffusion in Chemically Amplified Resists. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher M. Bottoms
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Tanguy Terlier
- Shared Equipment Authority, Rice University, Houston, Texas 77005, United States
| | - Gila E. Stein
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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9
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Dang DTX, Hoang HT, Doan TLH, Thoai N, Kawazoe Y, Nguyen-Manh D. Effect of axial molecules and linker length on CO 2 adsorption and selectivity of CAU-8: a combined DFT and GCMC simulation study. RSC Adv 2021; 11:12460-12469. [PMID: 35423819 PMCID: PMC8697253 DOI: 10.1039/d0ra10121d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/19/2021] [Indexed: 11/30/2022] Open
Abstract
Density Functional Theory (DFT) and Grand Canonical Monte Carlo (GCMC) calculations are performed to study the structures and carbon dioxide (CO2) adsorption properties of the newly designed metal–organic framework based on the CAU-8 (CAU stands for Christian-Albrechts Universität) prototype. In the new MOFs, the 4,4′-benzophenonedicarboxylic acid (H2BPDC) linker of CAU-8 is substituted by 4,4′-oxalylbis(azanediyl)dibenzoic acid (H2ODA) and 4,4′-teraphthaloylbis(azanediyl)dibenzoic acid (H2TDA) containing amide groups (–CO–NH- motif). Furthermore, MgO6 octahedral chains where dimethyl sulfoxide (DMSO) decorating the axial position bridged two Mg2+ ions are considered. The formation energies indicate that modified CAU-8 is thermodynamically stable. The reaction mechanisms between the metal clusters and the linkers to form the materials are also proposed. GCMC calculations show that CO2 adsorptions and selectivities of Al-based MOFs are better than those of Mg-based MOFs, which is due to DMSO. Amide groups made CO2 molecules more intensively distributed besides organic linkers. CO2 uptakes and selectivities of MOFs containing H2TDA linkers are better in comparison with those of MOFs containing H2BPDC linkers or H2ODA linkers. Density Functional Theory (DFT) and Grand Canonical Monte Carlo (GCMC) calculations are performed to study the structures and CO2 adsorption properties of the newly designed metal–organic framework based on the CAU-8 prototype.![]()
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Affiliation(s)
- Diem Thi-Xuan Dang
- Center for Innovative Materials and Architectures (INOMAR)
- Ho Chi Minh City 721337
- Vietnam
- Vietnam National University – Ho Chi Minh City
- Ho Chi Minh City 721337
| | - Hieu Trung Hoang
- Center for Innovative Materials and Architectures (INOMAR)
- Ho Chi Minh City 721337
- Vietnam
- Vietnam National University – Ho Chi Minh City
- Ho Chi Minh City 721337
| | - Tan Le Hoang Doan
- Center for Innovative Materials and Architectures (INOMAR)
- Ho Chi Minh City 721337
- Vietnam
- Vietnam National University – Ho Chi Minh City
- Ho Chi Minh City 721337
| | - Nam Thoai
- Vietnam National University – Ho Chi Minh City
- Ho Chi Minh City 721337
- Vietnam
- High Performance Computing Lab
- Faculty of Computer Science & Engineering
| | - Yoshiyuki Kawazoe
- New Industry Creation Hatchery Center
- Tohoku University
- Sendai 980-8579
- Japan
- Department of Physics
| | - Duc Nguyen-Manh
- CCFE
- United Kingdom Atomic Energy Authority
- Culham Science Centre
- UK
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10
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Zhang M, Chen L, Ma J. Multiscale Simulation of Vinyl Acetate Systems Applied in the Industrial Gas Separation Column. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Minhua Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Lihang Chen
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jing Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
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11
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Winslow SW, Swan JW, Tisdale WA. The Importance of Unbound Ligand in Nanocrystal Superlattice Formation. J Am Chem Soc 2020; 142:9675-9685. [DOI: 10.1021/jacs.0c01809] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Samuel W. Winslow
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
| | - James W. Swan
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
| | - William A. Tisdale
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
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12
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Feria E, Algaba J, Míguez JM, Mejía A, Gómez-Álvarez P, Blas FJ. Vapour–liquid phase equilibria and interfacial properties of fatty acid methyl esters from molecular dynamics simulations. Phys Chem Chem Phys 2020; 22:4974-4983. [DOI: 10.1039/c9cp06397h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Vapour–liquid surface tension as a function of temperature for methyl esters. Filled symbols are experimental data taken from the literature and open symbols MD NVT simulations.
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Affiliation(s)
- Esther Feria
- Laboratorio de Simulación Molecular y Química Computacional
- CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas
- Universidad de Huelva
- 21007 Huelva
- Spain
| | - Jesús Algaba
- Laboratorio de Simulación Molecular y Química Computacional
- CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas
- Universidad de Huelva
- 21007 Huelva
- Spain
| | - José Manuel Míguez
- Laboratorio de Simulación Molecular y Química Computacional
- CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas
- Universidad de Huelva
- 21007 Huelva
- Spain
| | - Andrés Mejía
- Departamento de Ingeniería Química
- Universidad de Concepción
- POB 160-C Concepción
- Chile
| | - Paula Gómez-Álvarez
- Laboratorio de Simulación Molecular y Química Computacional
- CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas
- Universidad de Huelva
- 21007 Huelva
- Spain
| | - Felipe J. Blas
- Laboratorio de Simulación Molecular y Química Computacional
- CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas
- Universidad de Huelva
- 21007 Huelva
- Spain
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13
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Guo W, Errington JR. Effect of Carboxylic Acid on the Wetting Properties of a Model Water-Octane-Silica System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6540-6549. [PMID: 31039315 DOI: 10.1021/acs.langmuir.9b00393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Monte Carlo simulations are employed to determine the effects of acetic acid on the wetting properties of a model water-octane-silica system. We first compute the bulk liquid-vapor saturation properties of pure acetic acid and subsequently explore the bulk liquid-liquid saturation properties of the ternary water-octane-acid system. We introduce an expanded ensemble approach to compute the coexistence properties of the ternary system. An interface potential approach is then used to capture the evolution of the wetting properties of the water-octane-silica system upon the addition of acetic acid. We track the change in the octane-water interfacial tension and the contact angle of water droplet on a silica substrate in a mother octane fluid over a range of acetic acid activities. The structure of the fluid, including the partitioning of acetic acid within the interfacial system, is also considered at several state points. We observe that acetic acid has a strong tendency to adsorb at the octane-water interface, resulting in a reduction in the octane-water interfacial tension. The response of the contact angle is more sensitive to the temperature and the hydrophilicity of the silica substrate.
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Affiliation(s)
- Wenjing Guo
- Department of Chemical and Biological Engineering , University at Buffalo , Buffalo , New York 14260-4200 , United States
| | - Jeffrey R Errington
- Department of Chemical and Biological Engineering , University at Buffalo , Buffalo , New York 14260-4200 , United States
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14
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Gordon R, Stober ST, Abrams CF. Counterion Effects on Aggregate Structure of 12-Hydroxystearate Salts in Hexane: A Quantum Mechanical and Molecular Dynamics Simulation Study. J Phys Chem B 2019; 123:534-541. [PMID: 30571113 DOI: 10.1021/acs.jpcb.8b08477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Salts of 12-hydroxystearate are important organogelators and grease thickeners, but a structural rationale for their rheological properties remains elusive. We use quantum mechanical calculations and molecular dynamics (MD) simulations to analyze aggregate structures for (1) ( R)-12-hydroxystearic acid (( R)-12HSA), (2) lithium ( R)-12-hydroxystearate (( R)-Li12HS), and (3) sodium ( R)-12-hydroxystearate (( R)-Na12HS). First, quantum mechanical calculations were used to establish the structure and complexation energies of dimers of acetic acid, lithium acetate, and sodium acetate. The expected acetic acid dimer is predicted, and both the lithium acetate and sodium acetate dimer formed a C2 h-symmetric structure. All dimers were sufficiently stable to allow modeling them as pseudocovalent complexes in all-atom, explicit solvent MD. After microsecond-long MD, all systems produced strong ringlike ordered nuclei. The C2 h lithium salt molecules produced aggregates that had the most efficient packing at the head group and a higher frequency of hydroxyl hydrogen bonding compared to the sodium salt. This ordering propensity explains the high melting temperature of ( R)-Li12HS. Also, the higher frequency of hydrogen bonding leads to fewer solvent-exposed hydrogen bond partners. This explains why lithium is a common counterion in high-temperature and water-resistant greases.
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Affiliation(s)
- Ryan Gordon
- Department of Chemical and Biological Engineering , Drexel University , Philadelphia , Pennsylvania 19104 , United States
| | - Spencer T Stober
- ExxonMobil Research and Engineering , Annandale , New Jersey 08801 , United States
| | - Cameron F Abrams
- Department of Chemical and Biological Engineering , Drexel University , Philadelphia , Pennsylvania 19104 , United States
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15
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Chakraborti T, Desouza A, Adhikari J. Prediction of Thermodynamic Properties of Levulinic Acid via Molecular Simulation Techniques. ACS OMEGA 2018; 3:18877-18884. [PMID: 31458449 PMCID: PMC6644150 DOI: 10.1021/acsomega.8b02793] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 12/14/2018] [Indexed: 06/10/2023]
Abstract
Second-generation biofuels are a complex mixture of organic compounds that can be further processed to hydrocarbon fuels and other valuable chemicals. One such chemical is levulinic acid (IUPAC name: 4-oxo pentanoic acid), which is a highly versatile ketoacid obtained from cellulose present in agricultural byproducts. For oxygen-containing compounds that decompose at elevated temperatures and pressures, determining the vapor-liquid equilibria data at high temperatures via the experimental route may be challenging. The molecular simulation approach is a cost-effective tool to obtain the necessary data while also allowing us to understand the microscopic origins of macroscopic observable properties. We have employed the transferable potential for phase equilibria-united atom force field to describe the interactions in this system with the parameters for a torsional interaction that are not reported in the literature (levulinic acid is a ketoacid) being determined from density functional theory calculations. We have verified our parameterization via density computations in the isothermal-isobaric ensemble and by comparing our simulation results with the corresponding data from experiments reported in the literature. We have performed grand-canonical transition-matrix Monte Carlo simulations in the temperature range from 580 to 690 K to estimate the vapor-liquid coexistence curves in the temperature-density plane and the Clapeyron plots. From this data, the critical point (T C = 755 K, ρC = 285.4 kg/m3, and P C = 30.57 bar) has been estimated, and this may be used as input to the equations of state employed in process simulation software for design of industrial separation processes including those for "biorefining". As levulinic acid is a "ketoacid", hydrogen bonding occurs, and the liquid phase structure has also been studied using radial distribution functions.
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Affiliation(s)
| | - Anish Desouza
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jhumpa Adhikari
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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16
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Jin J, Han Y, Voth GA. Ultra-Coarse-Grained Liquid State Models with Implicit Hydrogen Bonding. J Chem Theory Comput 2018; 14:6159-6174. [PMID: 30354110 DOI: 10.1021/acs.jctc.8b00812] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Coarse-graining (CG) methodologies have been widely used to extend the time and length scales of computer simulations by averaging over the atomistic details beneath the resolution of the CG models. Despite the efficiency of CG models, important configurational information during a given process may be lost at the CG resolution. One example of this is the topology of the hydrogen bonding network in the liquid state. When the functional group that participates in hydrogen bonding (e.g., -OH in methanol) is coarse-grained into one CG site, the effective interactions of the resultant CG model are usually derived from an averaged overall trajectory and, thus, do not take into account the hydrogen bonding interactions and topologies that are present at the all-atom resolution. In order to overcome this challenge, the present study develops new ultra-coarse-grained (UCG) models that include internal states within the CG sites that participate in hydrogen bonding, where each state represents a specific configuration such as the hydrogen bonding donor or acceptor. Internal states of the UCG beads are modeled to remain in quasi-equilibrium, and the degree of mixing is controlled by utilizing the effective local density of the UCG sites. In particular, we consider two groups of UCG models with different types of hydrogen bonding motifs: chain-like and ring-like. Using five different liquid systems that contain the same fundamental functional groups as biomolecules, we demonstrate the ability of the UCG models to reproduce the structural properties that originate from the configurations beneath the resolution of the UCG model. This proposed approach can also be applied to other liquids with such specific and directional interactions, or even to complex biomolecular systems in which hydrogen bonding is critical.
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Affiliation(s)
- Jaehyeok Jin
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics , The University of Chicago , Chicago , Illinois 60637 , United States
| | - Yining Han
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics , The University of Chicago , Chicago , Illinois 60637 , United States
| | - Gregory A Voth
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics , The University of Chicago , Chicago , Illinois 60637 , United States
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17
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Nasrabadi AT, Gelb LD. How Proton Transfer Equilibria Influence Ionic Liquid Properties: Molecular Simulations of Alkylammonium Acetates. J Phys Chem B 2018; 122:5961-5971. [DOI: 10.1021/acs.jpcb.8b01631] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amir Taghavi Nasrabadi
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Lev D. Gelb
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States
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18
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Zhang M, Chen L, Yang H, Ma J. Vapor Liquid Equilibria for Acetic Acid–Acetaldehyde–Crotonaldehyde System: Gibbs Ensemble Molecular Simulation for Pure Components and Binary Systems and NRTL Model Prediction for Ternary System. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Minhua Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation
Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Lihang Chen
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation
Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Huaming Yang
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation
Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jing Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation
Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
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19
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Sampath J, Hall LM. Effect of Neutralization on the Structure and Dynamics of Model Ionomer Melts. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Janani Sampath
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, United States
| | - Lisa M. Hall
- William G. Lowrie Department
of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210, United States
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20
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Sampath J, Hall LM. Impact of ionic aggregate structure on ionomer mechanical properties from coarse-grained molecular dynamics simulations. J Chem Phys 2017; 147:134901. [DOI: 10.1063/1.4985904] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Janani Sampath
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210,
USA
| | - Lisa M. Hall
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, Ohio 43210,
USA
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21
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Gordon R, Stober ST, Abrams CF. Effects of Optical Purity and Finite System Size on Self-Assembly of 12-Hydroxystearic Acid in Hexane: Molecular Dynamics Simulations. J Phys Chem B 2017; 121:9223-9233. [PMID: 28876930 DOI: 10.1021/acs.jpcb.7b05246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
12-Hydroxystearic acid (12HSA) and its derivatives are well-known organogelators, and they play critical roles in a variety of applications. The overall aggregate structure of 12HSA is sensitive to the chirality at the 12th carbon, but a fundamental understanding of this dependence is lacking. In this study, molecular dynamics simulations were conducted on microsecond long time scales for (1) (R)-12HSA, (2) (S)-12HSA, and (3) a 50/50 racemic mixture, each solvated at 12.5 wt % in explicit hexane. Self-assembly was accelerated by turning off alkyl chain dihedral gauche states and forcing the molecules to adopt an all-trans conformation. The stability of the resulting aggregates was tested by quenching them with access to gauche states restored. Ordered aggregates produced from optically pure (R)- and (S)-12HSA remained stable for at least 1 μs. The characteristic ordered structure observed is termed a "ring-of-rings" motif, and it contains two twisted six-membered ringlike bundles connected through acetic acid dimerization and surrounded by six satellite bundles. The chirality at the 12th carbon dictates the overall twist of the rings and thereby the handedness of the aggregates. Racemic mixtures did not produce stable ordered aggregates likely due to insufficient enantiomerically pure ring formation. The most prevalent finite-size effect observed was the stochastic formation of percolating aggregates, which were later avoided by using solvent-permeable, solute-impermeable, confining walls. The resulting ordered aggregates were in all important ways identical to those produced in unconfined systems. The combination of cycling off and on gauche states and the semipermeable walls may be an important new way to study the self-assembly underlying aggregation at industrially relevant concentrations of surfactants in organic solvents.
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Affiliation(s)
- Ryan Gordon
- Department of Chemical and Biological Engineering, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - Spencer T Stober
- ExxonMobil Research and Engineering , Annandale, New Jersey 08801, United States
| | - Cameron F Abrams
- Department of Chemical and Biological Engineering, Drexel University , Philadelphia, Pennsylvania 19104, United States
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22
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Li H, Zhang J, Li D, Li X, Gao X. Monte Carlo simulations of vapour–liquid phase equilibrium and microstructure for the system containing azeotropes. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1336665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hong Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- National Engineering Research Center of Distillation Technology, Tianjin, China
| | - Ji Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Dongyang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- National Engineering Research Center of Distillation Technology, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, China
| | - Xin Gao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- National Engineering Research Center of Distillation Technology, Tianjin, China
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23
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Tzounis PN, Anogiannakis SD, Theodorou DN. General Methodology for Estimating the Stiffness of Polymer Chains from Their Chemical Constitution: A Single Unperturbed Chain Monte Carlo Algorithm. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00645] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Stefanos D. Anogiannakis
- School of Chemical Engineering, National Technical University of Athens, GR 15780 Athens, Greece
| | - Doros N. Theodorou
- School of Chemical Engineering, National Technical University of Athens, GR 15780 Athens, Greece
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24
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Sepehri A, Loeffler TD, Chen B. Improving the Efficiency of Configurational-Bias Monte Carlo: A Jacobian–Gaussian Scheme for Generating Bending Angle Trials for Linear and Branched Molecules. J Chem Theory Comput 2017; 13:1577-1583. [DOI: 10.1021/acs.jctc.7b00173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aliasghar Sepehri
- Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803-1804, United States
| | - Troy D. Loeffler
- Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803-1804, United States
| | - Bin Chen
- Department of Chemistry, Louisiana State University, Baton
Rouge, Louisiana 70803-1804, United States
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25
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Tsivintzelis I, Kontogeorgis GM, Panayiotou C. Dimerization of Carboxylic Acids: An Equation of State Approach. J Phys Chem B 2017; 121:2153-2163. [DOI: 10.1021/acs.jpcb.6b10652] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ioannis Tsivintzelis
- Department
of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Georgios M. Kontogeorgis
- Center
for Energy Resources Engineering (CERE), Department of Chemical and
Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Costas Panayiotou
- Department
of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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26
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Lahrouch F, Chamayou AC, Creff G, Duvail M, Hennig C, Lozano Rodriguez MJ, Den Auwer C, Di Giorgio C. A Combined Spectroscopic/Molecular Dynamic Study for Investigating a Methyl-Carboxylated PEI as a Potential Uranium Decorporation Agent. Inorg Chem 2017; 56:1300-1308. [DOI: 10.1021/acs.inorgchem.6b02408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Florian Lahrouch
- Institut de Chimie de Nice, Université Côte d’Azur, CNRS, 06108 Nice, France
| | | | - Gaëlle Creff
- Institut de Chimie de Nice, Université Côte d’Azur, CNRS, 06108 Nice, France
| | - Magali Duvail
- Institut de Chimie Séparative de
Marcoule, UMR 5257, CEA-CNRS-Université Montpellier-ENSCM, Site
de Marcoule, BP 17171, 30207 Bagnols-sur-Cèze, France
| | - Christoph Hennig
- Institute
of Resource Ecology, HZDR, 01314 Dresden, Germany
- Rossendorf Beamline, ESRF, 38043 Grenoble, France
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27
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Ewen JP, Gattinoni C, Thakkar FM, Morgan N, Spikes HA, Dini D. A Comparison of Classical Force-Fields for Molecular Dynamics Simulations of Lubricants. MATERIALS 2016; 9:ma9080651. [PMID: 28773773 PMCID: PMC5509262 DOI: 10.3390/ma9080651] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/20/2016] [Accepted: 07/28/2016] [Indexed: 01/26/2023]
Abstract
For the successful development and application of lubricants, a full understanding of their complex nanoscale behavior under a wide range of external conditions is required, but this is difficult to obtain experimentally. Nonequilibrium molecular dynamics (NEMD) simulations can be used to yield unique insights into the atomic-scale structure and friction of lubricants and additives; however, the accuracy of the results depend on the chosen force-field. In this study, we demonstrate that the use of an accurate, all-atom force-field is critical in order to; (i) accurately predict important properties of long-chain, linear molecules; and (ii) reproduce experimental friction behavior of multi-component tribological systems. In particular, we focus on n-hexadecane, an important model lubricant with a wide range of industrial applications. Moreover, simulating conditions common in tribological systems, i.e., high temperatures and pressures (HTHP), allows the limits of the selected force-fields to be tested. In the first section, a large number of united-atom and all-atom force-fields are benchmarked in terms of their density and viscosity prediction accuracy of n-hexadecane using equilibrium molecular dynamics (EMD) simulations at ambient and HTHP conditions. Whilst united-atom force-fields accurately reproduce experimental density, the viscosity is significantly under-predicted compared to all-atom force-fields and experiments. Moreover, some all-atom force-fields yield elevated melting points, leading to significant overestimation of both the density and viscosity. In the second section, the most accurate united-atom and all-atom force-field are compared in confined NEMD simulations which probe the structure and friction of stearic acid adsorbed on iron oxide and separated by a thin layer of n-hexadecane. The united-atom force-field provides an accurate representation of the structure of the confined stearic acid film; however, friction coefficients are consistently under-predicted and the friction-coverage and friction-velocity behavior deviates from that observed using all-atom force-fields and experimentally. This has important implications regarding force-field selection for NEMD simulations of systems containing long-chain, linear molecules; specifically, it is recommended that accurate all-atom potentials, such as L-OPLS-AA, are employed.
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Affiliation(s)
- James P Ewen
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
| | - Chiara Gattinoni
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
| | - Foram M Thakkar
- Shell India Markets Private Limited, 8B RMZ Centennial Building, Kundanahalli Main Road, Bangalore 560048, India.
| | - Neal Morgan
- Shell Global Solutions UK Ltd., Brabazon House, Manchester M22 0RR, UK.
| | - Hugh A Spikes
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
| | - Daniele Dini
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
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28
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Ting CL, Sorensen-Unruh KE, Stevens MJ, Frischknecht AL. Nonequilibrium simulations of model ionomers in an oscillating electric field. J Chem Phys 2016; 145:044902. [PMID: 27475392 DOI: 10.1063/1.4959120] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | | | - Mark J. Stevens
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - Amalie L. Frischknecht
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
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29
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Gordon R, Stober ST, Abrams CF. Aggregation of 12-Hydroxystearic Acid and Its Lithium Salt in Hexane: Molecular Dynamics Simulations. J Phys Chem B 2016; 120:7164-73. [DOI: 10.1021/acs.jpcb.6b04193] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan Gordon
- Department
of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Spencer T. Stober
- ExxonMobil Research
and Engineering, Annandale, New Jersey 08801, United States
| | - Cameron F. Abrams
- Department
of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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30
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Gibbs ensemble Monte Carlo simulation using an optimized potential model: pure acetic acid and a mixture of it with ethylene. J Mol Model 2016; 22:162. [DOI: 10.1007/s00894-016-3033-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 06/09/2016] [Indexed: 10/21/2022]
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31
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Wang JC, Bruttini R, Liapis AI. Molecular Dynamics Modeling and Simulation Studies of the Effects of Additive Solutes on the Dehydration and Rehydration of Polymeric Porous Media. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00569] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J.-C. Wang
- Department
of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 100 Bertelsmeyer Hall, 1101 North State Street, Rolla, Missouri 65409-1230, United States
| | - R. Bruttini
- Criofarma-Freeze-Drying
Equipment, Strada del Francese 97/2L, 10156 Turin, Italy
| | - A. I. Liapis
- Department
of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 100 Bertelsmeyer Hall, 1101 North State Street, Rolla, Missouri 65409-1230, United States
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32
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Radola B, Picaud S, Vardanega D, Jedlovszky P. Molecular Dynamics Simulations of the Interaction between Water Molecules and Aggregates of Acetic or Propionic Acid Molecules. J Phys Chem B 2015; 119:15662-74. [DOI: 10.1021/acs.jpcb.5b08110] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bastien Radola
- Institut
UTINAM - UMR 6213, CNRS, Univ. Bourgogne Franche-Comté, F-25000 Besançon Cedex, France
| | - Sylvain Picaud
- Institut
UTINAM - UMR 6213, CNRS, Univ. Bourgogne Franche-Comté, F-25000 Besançon Cedex, France
| | - Delphine Vardanega
- Institut
UTINAM - UMR 6213, CNRS, Univ. Bourgogne Franche-Comté, F-25000 Besançon Cedex, France
- PhLAM - UMR8523,
CNRS, Univ. Lille 1, F-59655 Villeneuve d’Ascq, France
| | - Pál Jedlovszky
- Laboratory
of Interfaces and Nanosized Systems, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter
stny, 1/a, H-1117 Budapest, Hungary
- HAS Research Group of Technical Analytical Chemistry, Szt. Gellért tér 4, H-1111 Budapest, Hungary
- EKF Department of Chemistry, Eszterházy tér 1, H-3300 Eger, Hungary
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33
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Nieto-Draghi C, Fayet G, Creton B, Rozanska X, Rotureau P, de Hemptinne JC, Ungerer P, Rousseau B, Adamo C. A General Guidebook for the Theoretical Prediction of Physicochemical Properties of Chemicals for Regulatory Purposes. Chem Rev 2015; 115:13093-164. [PMID: 26624238 DOI: 10.1021/acs.chemrev.5b00215] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Carlos Nieto-Draghi
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Guillaume Fayet
- INERIS, Parc Technologique Alata, BP2 , 60550 Verneuil-en-Halatte, France
| | - Benoit Creton
- IFP Energies nouvelles , 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Xavier Rozanska
- Materials Design S.A.R.L. , 18, rue de Saisset, 92120 Montrouge, France
| | - Patricia Rotureau
- INERIS, Parc Technologique Alata, BP2 , 60550 Verneuil-en-Halatte, France
| | | | - Philippe Ungerer
- Materials Design S.A.R.L. , 18, rue de Saisset, 92120 Montrouge, France
| | - Bernard Rousseau
- Laboratoire de Chimie-Physique, Université Paris Sud , UMR 8000 CNRS, Bât. 349, 91405 Orsay Cedex, France
| | - Carlo Adamo
- Institut de Recherche Chimie Paris, PSL Research University, CNRS, Chimie Paristech , 11 rue P. et M. Curie, F-75005 Paris, France.,Institut Universitaire de France , 103 Boulevard Saint Michel, F-75005 Paris, France
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34
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Extension of the TraPPE-UA force field to the simulation of vapor–liquid phase equilibria of vinyl acetate system. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.06.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Loeffler TD, Sepehri A, Chen B. Improved Monte Carlo Scheme for Efficient Particle Transfer in Heterogeneous Systems in the Grand Canonical Ensemble: Application to Vapor–Liquid Nucleation. J Chem Theory Comput 2015; 11:4023-32. [DOI: 10.1021/acs.jctc.5b00466] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Troy D. Loeffler
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Aliasghar Sepehri
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Bin Chen
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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36
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Ting CL, Stevens MJ, Frischknecht AL. Structure and Dynamics of Coarse-Grained Ionomer Melts in an External Electric Field. Macromolecules 2015. [DOI: 10.1021/ma501916z] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christina L. Ting
- Sandia
National Laboratories, and ‡Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Mark J. Stevens
- Sandia
National Laboratories, and ‡Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Amalie L. Frischknecht
- Sandia
National Laboratories, and ‡Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
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37
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Chen S, Yi S, Gao W, Zuo C, Hu Z. Force field development for organic molecules: Modifying dihedral and 1-npair interaction parameters. J Comput Chem 2014; 36:376-84. [DOI: 10.1002/jcc.23808] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 10/14/2014] [Accepted: 11/23/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Siyan Chen
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University; Changchun 130012 People's Republic of China
- College of Mechanical Science and Engineering, Jilin University; Changchun 130022 People's Republic of China
| | - Shasha Yi
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University; Changchun 130012 People's Republic of China
- Institute of Theoretical Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Wenmei Gao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University; Changchun 130012 People's Republic of China
- Institute of Theoretical Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Chuncheng Zuo
- College of Mechanical Science and Engineering, Jilin University; Changchun 130022 People's Republic of China
| | - Zhonghan Hu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University; Changchun 130012 People's Republic of China
- Institute of Theoretical Chemistry, Jilin University; Changchun 130012 People's Republic of China
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38
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Structural investigation of liquid acetic acid by neutron scattering, DFT calculations and molecular dynamics simulations. Complementarity to x-ray scattering results. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.02.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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40
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Campañá C, Miller RE. Physical properties of liquid hexane and derived polar by-products of hexane autoxidation: molecular dynamics calculations using the TraPPE-UA force field. MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2013.775439] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Bhatnagar N, Kamath G, Potoff JJ. Biomolecular Simulations with the Transferable Potentials for Phase Equilibria: Extension to Phospholipids. J Phys Chem B 2013; 117:9910-21. [DOI: 10.1021/jp404314k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Navendu Bhatnagar
- Department of Chemical Engineering
and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Ganesh Kamath
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri
65211-7600, United States
| | - Jeffrey J. Potoff
- Department of Chemical Engineering
and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
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42
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Ferrando N, Gedik I, Lachet V, Pigeon L, Lugo R. Prediction of Phase Equilibrium and Hydration Free Energy of Carboxylic Acids by Monte Carlo Simulations. J Phys Chem B 2013; 117:7123-32. [DOI: 10.1021/jp401251w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Nicolas Ferrando
- IFP Energies Nouvelles,
1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Ibrahim Gedik
- IFP Energies Nouvelles,
1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Véronique Lachet
- IFP Energies Nouvelles,
1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Laurent Pigeon
- IFP Energies Nouvelles,
1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Rafael Lugo
- IFP Energies Nouvelles,
1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
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43
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Parkes MV, Staiger CL, Perry IV JJ, Allendorf MD, Greathouse JA. Screening metal–organic frameworks for selective noble gas adsorption in air: effect of pore size and framework topology. Phys Chem Chem Phys 2013; 15:9093-106. [DOI: 10.1039/c3cp50774b] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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44
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Ferrando N, Lachet V, Boutin A. Transferable Force Field for Carboxylate Esters: Application to Fatty Acid Methylic Ester Phase Equilibria Prediction. J Phys Chem B 2012; 116:3239-48. [DOI: 10.1021/jp212060u] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Nicolas Ferrando
- IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Véronique Lachet
- IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
| | - Anne Boutin
- Ecole Normale Supérieure, Département de Chimie, UMR 8640, CNRS-ENS-UPMC, 24 rue Lhomond,
75005 Paris, France
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45
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Sanders SA, Sammalkorpi M, Panagiotopoulos AZ. Atomistic Simulations of Micellization of Sodium Hexyl, Heptyl, Octyl, and Nonyl Sulfates. J Phys Chem B 2012; 116:2430-7. [DOI: 10.1021/jp209207p] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samantha A. Sanders
- Department of Chemical and Biological
Engineering and Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544,
United States
| | | | - Athanassios Z. Panagiotopoulos
- Department of Chemical and Biological
Engineering and Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544,
United States
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46
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Hall LM, Seitz ME, Winey KI, Opper KL, Wagener KB, Stevens MJ, Frischknecht AL. Ionic aggregate structure in ionomer melts: effect of molecular architecture on aggregates and the ionomer peak. J Am Chem Soc 2011; 134:574-87. [PMID: 22133577 DOI: 10.1021/ja209142b] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We perform a comprehensive set of coarse-grained molecular dynamics simulations of ionomer melts with varying polymer architectures and compare the results to experiments in order to understand ionic aggregation on a molecular level. The model ionomers contain periodically or randomly spaced charged beads, placed either within or pendant to the polymer backbone, with the counterions treated explicitly. The ionic aggregate structure was determined as a function of the spacing of charged beads and also depends on whether the charged beads are in the polymer backbone or pendant to the backbone. The low wavevector ionomer peak in the counterion scattering is observed for all systems, and it is sharpest for ionomers with periodically spaced pendant charged beads with a large spacing between charged beads. Changing to a random or a shorter spacing moves the peak to lower wavevector. We present new experimental X-ray scattering data on Na(+)-neutralized poly(ethylene-co-acrylic acid) ionomers that show the same two trends in the ionomer peak, for similarly structured ionomers. The order within and between aggregates, and how this relates to various models used to fit the ionomer peak, is quantified and discussed.
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Affiliation(s)
- Lisa M Hall
- Computational Materials Science and Engineering Department, Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
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47
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Volkert AA, Subramaniam V, Ivanov MR, Goodman AM, Haes AJ. Salt-mediated self-assembly of thioctic acid on gold nanoparticles. ACS NANO 2011; 5:4570-80. [PMID: 21524135 PMCID: PMC3125453 DOI: 10.1021/nn200276a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Self-assembled monolayer (SAM) modification is a widely used method to improve the functionality and stability of bulk and nanoscale materials. For instance, the chemical compatibility and utility of solution-phase nanoparticles are often improved using covalently bound SAMs. Herein, solution-phase gold nanoparticles are modified with thioctic acid SAMs in the presence and absence of salt. Molecular packing density on the nanoparticle surfaces is estimated using X-ray photoelectron spectroscopy and increases by ∼20% when molecular self-assembly occurs in the presence versus the absence of salt. We hypothesize that as the ionic strength of the solution increases, pinhole and collapsed-site defects in the SAM are more easily accessible as the electrostatic interaction energy between adjacent molecules decreases, thereby facilitating the subsequent assembly of additional thioctic acid molecules. Significantly, increased SAM packing densities increase the stability of functionalized gold nanoparticles by a factor of 2 relative to nanoparticles functionalized in the absence of salt. These results are expected to improve the reproducible functionalization of solution-phase nanomaterials for various applications.
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Affiliation(s)
| | | | | | | | - Amanda J. Haes
- University of Iowa, Department of Chemistry, Iowa City, Iowa 52242
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48
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Ketko MH, Kamath G, Potoff JJ. Development of an Optimized Intermolecular Potential for Sulfur Dioxide. J Phys Chem B 2011; 115:4949-54. [DOI: 10.1021/jp2010524] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- MaryBeth H. Ketko
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Ganesh Kamath
- Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Jeffrey J. Potoff
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
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49
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Hall LM, Stevens MJ, Frischknecht AL. Effect of polymer architecture and ionic aggregation on the scattering peak in model ionomers. PHYSICAL REVIEW LETTERS 2011; 106:127801. [PMID: 21517351 DOI: 10.1103/physrevlett.106.127801] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 05/30/2023]
Abstract
We perform molecular dynamics simulations of coarse-grained ionomer melts with two different architectures. Regularly spaced charged beads are placed either in the polymer backbone (ionenes) or pendant to it. The ionic aggregate structure is quantified as a function of the dielectric constant. The low wave vector ionomer scattering peak is present in all cases, but is significantly more intense for pendant ions, which form compact, discrete aggregates with liquidlike interaggregate order. This is in qualitative contrast to the ionenes, which form extended aggregates.
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Affiliation(s)
- Lisa M Hall
- Computational Materials Science and Engineering Department, Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
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50
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Vahid A, Elliott JR. Transferable intermolecular potentials for carboxylic acids and their phase behavior. AIChE J 2010. [DOI: 10.1002/aic.11966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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