1
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Yang X, Zhang C, Yang X, Xu Z. Free energy reconstruction/decomposition from WHAM, force integration and free energy perturbation for an umbrella sampling simulation. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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2
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Garnier L, Bonal C, Malfreyt P. Free‐energy calculations of the host–guest association in grafted supramolecular assemblies. J Comput Chem 2020. [DOI: 10.1002/jcc.26382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ludovic Garnier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont‐Ferrand Clermont‐Ferrand France
| | - Christine Bonal
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont‐Ferrand Clermont‐Ferrand France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont‐Ferrand Clermont‐Ferrand France
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3
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Murakami K, Waizumi K. Specific Binding and Cooperative Binding of Dodecylpyridinium Chloride to Water-Soluble Calix[n]arenes and Effect of Cerium and Uranyl Cations. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Kiyofumi Murakami
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8513, Japan
| | - Kenji Waizumi
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8513, Japan
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4
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Garnier L, Devémy J, Bonal C, Malfreyt P. Calculations of potential of mean force: application to ion-pairs and host–guest systems. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1442593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Ludovic Garnier
- CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne , Clermont-Ferrand, France
| | - Julien Devémy
- CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne , Clermont-Ferrand, France
| | - Christine Bonal
- CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne , Clermont-Ferrand, France
| | - Patrice Malfreyt
- CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne , Clermont-Ferrand, France
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d'Oliveira HD, Davoy X, Arche E, Malfreyt P, Ghoufi A. Test-area surface tension calculation of the graphene-methane interface: Fluctuations and commensurability. J Chem Phys 2017; 146:214112. [PMID: 28595389 PMCID: PMC5461174 DOI: 10.1063/1.4984577] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/10/2017] [Indexed: 11/14/2022] Open
Abstract
The surface tension (γ) of methane on a graphene monolayer is calculated by using the test-area approach. By using a united atom model to describe methane molecules, strong fluctuations of surface tension as a function of the surface area of the graphene are evidenced. In contrast with the liquid-vapor interfaces, the use of a larger cutoff does not fully erase the fluctuations in the surface tension. Counterintuitively, the description of methane and graphene from the Optimized Potentials for Liquid Simulations all-atom model and a flexible model, respectively, led to a lessening in the surface tension fluctuations. This result suggests that the origin of fluctuations in γ is due to a model-effect rather than size-effects. We show that the molecular origin of these fluctuations is the result of a commensurable organization between both graphene and methane. This commensurable structure can be avoided by describing methane and graphene from a flexible force field. Although differences in γ with respect to the model have been often reported, it is the first time that the model drastically affects the physics of a system.
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Affiliation(s)
- H D d'Oliveira
- Institut de Physique de Rennes, IPR, CNRS-Université de Rennes 1, UMR CNRS 6251, 35042 Rennes, France
| | - X Davoy
- Institut de Physique de Rennes, IPR, CNRS-Université de Rennes 1, UMR CNRS 6251, 35042 Rennes, France
| | - E Arche
- Institut de Physique de Rennes, IPR, CNRS-Université de Rennes 1, UMR CNRS 6251, 35042 Rennes, France
| | - P Malfreyt
- Institut de Chimie de Clermont-Ferrand, ICCF, UMR CNRS 6296, Université Clermont Auvergne, Universit Blaise Pascal, BP 10448, F-63000 Clermont-Ferrand, France
| | - A Ghoufi
- Institut de Physique de Rennes, IPR, CNRS-Université de Rennes 1, UMR CNRS 6251, 35042 Rennes, France
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6
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Ghoufi A. Nanoconfined gases, liquids and liquid crystals in porous materials. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2013.829218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Homman AA, Bourasseau E, Stoltz G, Malfreyt P, Strafella L, Ghoufi A. Surface tension of spherical drops from surface of tension. J Chem Phys 2014; 140:034110. [DOI: 10.1063/1.4862149] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Ghoufi A, Malfreyt P. Local description of surface tension through thermodynamic and mechanical definitions. MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2012.755529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Li H, Song JP, Chao JB, Shuang SM, Dong C. Study on the inclusion behavior of p-sulfonatocalix[6]arene with propranolol by spectrofluorometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:155-160. [PMID: 22750684 DOI: 10.1016/j.saa.2012.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 04/18/2012] [Accepted: 06/04/2012] [Indexed: 06/01/2023]
Abstract
The inclusion interaction between propranolol (PPL) and p-sulfonatocalix[6]arene (SCX6) was investigated by fluorescence and (1)H NMR spectroscopy. Influences of pH, temperature, ionic strength and the concentration of SCX6 were examined in detail. In phosphate buffer solution with pH 7.5, the fluorescence of PPL dramatically quenched upon addition of SCX6 revealing the formation of inclusion complexes between PPL and SCX6. The stoichiometric ratio was verified to be 1:1 by the continuous variation method. The inclusion constant of PPL-SCX6 complexes was calculated as 2.2×10(4)L/mol by the nonlinear curve fitting method. (1)H NMR titration spectra testified that the aliphatic chain of PPL may be partially penetrated into the hydrophobic cavity of SCX6. This was confirmed by molecular dynamics calculations.
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Affiliation(s)
- Hui Li
- Research Center for Environmental Science and Engineering, Shanxi University, Taiyuan 030006, China
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Bellesia G, Chundawat SPS, Langan P, Redondo A, Dale BE, Gnanakaran S. Coarse-Grained Model for the Interconversion between Native and Liquid Ammonia-Treated Crystalline Cellulose. J Phys Chem B 2012; 116:8031-7. [DOI: 10.1021/jp300354q] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giovanni Bellesia
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
| | - Shishir P. S. Chundawat
- Great
Lakes Bioenergy Research
Center (GLBRC), Biomass Conversion Research Laboratory, Department
of Chemical Engineering and Material Science, Michigan State University, Lansing, Michigan 48824, United States
| | - Paul Langan
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6475, United
States
| | - Antonio Redondo
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
| | - Bruce E. Dale
- Great
Lakes Bioenergy Research
Center (GLBRC), Biomass Conversion Research Laboratory, Department
of Chemical Engineering and Material Science, Michigan State University, Lansing, Michigan 48824, United States
| | - S. Gnanakaran
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico
87545, United States
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11
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Filippini G, Bonal C, Malfreyt P. Methodological approaches for the free energy calculations in electroactive SAMs. Mol Phys 2012. [DOI: 10.1080/00268976.2011.652680] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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12
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Ghoufi A, Malfreyt P. Calculation of the surface tension and pressure components from a non-exponential perturbation method of the thermodynamic route. J Chem Phys 2012; 136:024104. [DOI: 10.1063/1.3676056] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Ghoufi A, Malfreyt P. Local pressure components and surface tension of spherical interfaces. Thermodynamic versus mechanical definitions. I. A mesoscale modeling of droplets. J Chem Phys 2011; 135:104105. [DOI: 10.1063/1.3632991] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Ghoufi A, Morineau D, Lefort R, Hureau I, Hennous L, Zhu H, Szymczyk A, Malfreyt P, Maurin G. Molecular simulations of confined liquids: An alternative to the grand canonical Monte Carlo simulations. J Chem Phys 2011; 134:074104. [DOI: 10.1063/1.3554641] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Filippini G, Goujon F, Bonal C, Malfreyt P. Toward a Prediction of the Redox Properties of Electroactive SAMs: A Free Energy Calculation by Molecular Simulation. J Phys Chem B 2010; 114:12897-907. [DOI: 10.1021/jp105632w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gaëlle Filippini
- Clermont Université, Université Blaise Pascal, Laboratoire de Thermodynamique et Interactions Moléculaires, UMR CNRS 6272, BP 10448, F-63000 Clermont-Ferrand, France
| | - Florent Goujon
- Clermont Université, Université Blaise Pascal, Laboratoire de Thermodynamique et Interactions Moléculaires, UMR CNRS 6272, BP 10448, F-63000 Clermont-Ferrand, France
| | - Christine Bonal
- Clermont Université, Université Blaise Pascal, Laboratoire de Thermodynamique et Interactions Moléculaires, UMR CNRS 6272, BP 10448, F-63000 Clermont-Ferrand, France
| | - Patrice Malfreyt
- Clermont Université, Université Blaise Pascal, Laboratoire de Thermodynamique et Interactions Moléculaires, UMR CNRS 6272, BP 10448, F-63000 Clermont-Ferrand, France
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16
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Zhou S, Solana JR. Progress in the Perturbation Approach in Fluid and Fluid-Related Theories. Chem Rev 2009; 109:2829-58. [DOI: 10.1021/cr900094p] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Shiqi Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China, and School of Physics Science and Technology, Central South University, Changsha, Hunan 410083, China
| | - J. R. Solana
- Applied Physics Department, University of Cantabria, 39005 Santander, Spain
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Gu X, Zhang L, Gong X, Lau WM, Liu ZF. Diffusion of Vinyl Bromide through the Crystals of p-But-calix[4]arene. J Phys Chem B 2008; 112:14851-6. [DOI: 10.1021/jp806778j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Gu
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China; Surface Physics Laboratory and Department of Physics, Fudan University, Shanghai 200433, China; and Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Liang Zhang
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China; Surface Physics Laboratory and Department of Physics, Fudan University, Shanghai 200433, China; and Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Xingao Gong
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China; Surface Physics Laboratory and Department of Physics, Fudan University, Shanghai 200433, China; and Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - W. M. Lau
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China; Surface Physics Laboratory and Department of Physics, Fudan University, Shanghai 200433, China; and Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Z. F. Liu
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China; Surface Physics Laboratory and Department of Physics, Fudan University, Shanghai 200433, China; and Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
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Adams JE, Cox JR, Christiano AJ, Deakyne CA. Molecular Dynamics of Host−Guest Complexes of Small Gas Molecules with Calix[4]arenes. J Phys Chem A 2008; 112:6829-39. [DOI: 10.1021/jp800492y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- John E. Adams
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211-7600
| | - Jack R. Cox
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211-7600
| | - Andrew J. Christiano
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211-7600
| | - Carol A. Deakyne
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211-7600
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Ghoufi A, Pison L, Morel JP, Morel-Desrosiers N, Bonal C, Malfreyt P. Computational and experimental investigations of supramolecular assemblies of p-sulfonatocalix[4]arene organized by weak forces. J Phys Chem B 2007; 111:11478-85. [PMID: 17850131 DOI: 10.1021/jp0721245] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the study of the supramolecular assemblies formed by the incorporation of quaternary ammonium cations such as Me4N+ or Et4N+ into host-guest assemblies with p-sulfonatocalix[4]arene in the presence of a lanthanide(III) cation in water. We use microcalorimetry to characterize the formation of these supramolecular assemblies. We obtain a molecular description of these assemblies by performing molecular dynamics simulations over a very large period of time. The structures of these supramolecular complexes have been determined and discussed through specific interaction energy contributions. By combining MD simulations and 1NMR spectroscopy, we highlight a specific behavior of the supramolecular assembly with the Me4N+.
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Affiliation(s)
- A Ghoufi
- Laboratoire de Thermodynamique des Solutions et des Polymeres, UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), 24 avenue des Landais, 63177 Aubière Cedex, France
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Ghoufi A, Archirel P, Morel JP, Morel-Desrosiers N, Boutin A, Malfreyt P. Methodology for the Calculation of the Potential of Mean Force for a Cation–π Complex in Water. Chemphyschem 2007; 8:1648-56. [PMID: 17583904 DOI: 10.1002/cphc.200700197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We report potential of mean force (PMF) calculations on the interaction between the p-sulfonatocalix[4]arene and a monovalent cation (Cs(+)). It has been recently shown from microcalorimetry and (133)Cs NMR experiments that the association with Cs(+) is governed by favourable cation-pi interactions and is characterized by the insertion of the cation into the cavity of the macrocycle. We show that the PMF calculation based upon a classical model is not able to reproduce both the thermodynamic properties of association and the insertion of the cation. In order to take into account the different contributions of the cation-pi interactions, we develop a new methodology consisting of changing the standard PMF by an additional contribution resulting from quantum calculations. The calculated thermodynamic properties of association are thus in line with the microcalorimetry and (133)Cs NMR experiments and the structure of the complex at the Gibbs free-energy minimum shows the insertion of the cation into the cavity of the calixarene.
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Affiliation(s)
- Aziz Ghoufi
- Laboratoire de Thermodynamique des Solutions et des Polymères, UMR CNRS 6003, Université Blaise Pascal, 63177 Aubière Cedex, France
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21
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Cuc D, Canet D, Morel JP, Morel-Desrosiers N, Mutzenhardt P. 133Cs Diffusion NMR Spectroscopy: A Tool for Probing Metal Cation–π Interactions in Water. Chemphyschem 2007; 8:643-5. [PMID: 17300113 DOI: 10.1002/cphc.200600772] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Diana Cuc
- UMR SRSMC 7565, Nancy-Université, CNRS, Méthodologie RMN, Faculté des Sciences et Techniques, BP 239, 54506 Vandoeuvre-les-Nancy Cedex, France
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Abstract
Supramolecular chemistry in water is a constantly growing research area because noncovalent interactions in aqueous media are important for obtaining a better understanding and control of the major processes in nature. This Review offers an overview of recent advances in the area of water-soluble synthetic receptors as well as self-assembly and molecular recognition in water, through consideration of the functionalities that are used to increase the water solubility, as well as the supramolecular interactions and approaches used for effective recognition of a guest and self-assembly in water. The special features and applications of supramolecular entities in aqueous media are also described.
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Affiliation(s)
- Gennady V Oshovsky
- Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Bonal C, Malfreyt P, Morel JP, Morel-Desrosiers N. Thermodynamics of Complexation of Tetraalkylammonium and Rare-earth Cations with Two Sulfonatocalix[n]arenes (n=4 and 6) in Aqueous Solution. Supramol Chem 2007. [DOI: 10.1080/10610270500404249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Christine Bonal
- a UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), Laboratoire de Thermodynamique des Solutions et des Polymères , 24 Avenue des Landais, 63177, Aubière Cedex, France
| | - Patrice Malfreyt
- a UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), Laboratoire de Thermodynamique des Solutions et des Polymères , 24 Avenue des Landais, 63177, Aubière Cedex, France
| | - Jean-Pierre Morel
- a UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), Laboratoire de Thermodynamique des Solutions et des Polymères , 24 Avenue des Landais, 63177, Aubière Cedex, France
| | - Nicole Morel-Desrosiers
- a UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), Laboratoire de Thermodynamique des Solutions et des Polymères , 24 Avenue des Landais, 63177, Aubière Cedex, France
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Ghoufi A, Malfreyt P. Calculation of the absolute thermodynamic properties of association of host-guest systems from the intermolecular potential of mean force. J Chem Phys 2006; 125:224503. [PMID: 17176145 DOI: 10.1063/1.2402165] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The authors report calculations of the intermolecular potential of mean force (PMF) in the case of the host-guest interaction. The host-guest system is defined by a water soluble calixarene and a cation. With an organic cation such as the tetramethylammonium cation, the calixarene forms an insertion complex, whereas with the Lanthane cation, the supramolecular assembly is an outer-sphere complex. The authors apply a modified free energy perturbation method and the force constraint technique to establish the PMF profiles as a function of the separation distance between the host and guest. They use the PMF profile for the calculation of the absolute thermodynamic properties of association that they compare to the experimental values previously determined. They finish by giving some structural features of the insertion and outer-sphere complexes at the Gibbs free energy minimum.
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Affiliation(s)
- Aziz Ghoufi
- Laboratoire de Thermodynamique des Solutions et des Polymères, UMR CNRS 6003, Université Blaise Pascal, 63177 Aubière Cedex, France
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26
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Ghoufi A, Malfreyt P. Entropy and enthalpy calculations from perturbation and integration thermodynamics methods using molecular dynamics simulations: applications to the calculation of hydration and association thermodynamic properties. Mol Phys 2006. [DOI: 10.1080/00268970600893060] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Alavi S, Afagh NA, Ripmeester JA, Thompson DL. Molecular Dynamics Simulations ofp-tert-Butylcalix[4]arene with Small Guest Molecules. Chemistry 2006; 12:5231-7. [PMID: 16528789 DOI: 10.1002/chem.200501317] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Classical molecular dynamics simulations were used to study p-tert-butylcalix[4]arene inclusion compounds with xenon, nitrogen, hydrogen, methane, and sulfur dioxide guest molecules. The calixarene units were taken to be rigid and the intermolecular molecular interactions were modeled as a sum of the van der Waals interactions with parameters from the AMBER force field and electrostatic interactions. Simulations of the high-density alpha phase and low-density beta0 phase of p-tert-butylcalix[4]arene were used to test the force field. The predicted densities of the two phases were found to agree with experimental measurements at 173 K to within 5 %. Simulations were performed with guests placed inside the calixarene cages of the beta0 phase. Guest-host ratios of 1:1 to 1:4 were considered. Changes in the unit-cell volume and density of the phases with the addition of guest molecules and the inclusion energies for the guests were determined. Finally, the dynamics of the guest motion inside the cages were characterized by determining the root-mean-square displacements and velocity autocorrelation functions of the xenon and nitrogen guests.
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Affiliation(s)
- Saman Alavi
- Steacie Institute for Molecular Sciences (SIMS), National Research Council of Canada, 100 Sussex Dr., Ottawa, Ontario K1A 0R6, Canada
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Morel JP, Morel-Desrosiers N. Binding of monovalent metal cations by the p-sulfonatocalix[4]arene: experimental evidence for cation–π interactions in water. Org Biomol Chem 2006; 4:462-5. [PMID: 16446803 DOI: 10.1039/b512856k] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gibbs free energies, enthalpies and entropies for the binding of Na+, K+, Rb+, Cs+, Ag+, Tl+ and NH4+ by the p-sulfonatocalix[4]arene in water are determined by microcalorimetry. Whereas no significant heat effect is detected with Na+ or Ag+, suggesting that these cations are not complexed, weak but selective binding is observed with the other cations. The whole set of thermodynamic parameters, which demonstrate that the cations bind inside the cavity of the calixarene, evidence the importance of the cation-pi interactions for these complexes in water.
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Affiliation(s)
- Jean-Pierre Morel
- Laboratoire de Thermodynamique des Solutions et des Polymères, UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), 24 avenue des Landais, 63177 Aubière Cedex, France
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Liu SL, Gong SL, Chen YY. Synthesis of Diamido Bridged Homooxacalix[3]arenes and Their Recognition Property for Linear Alkylammonium Ions. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200591651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ghoufi A, Morel JP, Morel-Desrosiers N, Malfreyt P. MD Simulations of the Binding of Alcohols and Diols by a Calixarene in Water: Connections between Microscopic and Macroscopic Properties. J Phys Chem B 2005; 109:23579-87. [PMID: 16375334 DOI: 10.1021/jp054925i] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report results of molecular dynamics (MD) simulations of the complexes of p-sulfonatocalix[4]arene with linear alcohols from ethanol to heptanol in water at 25 degrees C. We show that these complexes are of the inclusion type and are governed by van der Waals interactions between the calixarene cavity and the inserted alkyl chain of the alcohol. We establish a correlation between the experimental Delta(r)H degrees values and the number of atoms inserted into the calixarene cavity. We also focus on the desolvation of the host and guest to establish the importance, at the enthalpic level, of the formation of hydrogen bond bridges between the calixarene and the alcohol molecule. The fact that methanol is not complexed by p-sulfonatocalix[4]arene is explained by calculating the cost of the desolvation of the guest upon complexation. We complete this study by modeling the complexes formed with 1,4-butanediol and 1,5-pentanediol. To explain the difference between the thermodynamic properties for the binding of 1,4-butanediol and butanol, we examine the insertion rate and the solvation of each hydroxy group. We show a specific behavior of one of the two hydroxy groups at the structural and energetic levels.
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Affiliation(s)
- A Ghoufi
- Laboratoire de Thermodynamique des Solutions et des Polymères, UMR CNRS 6003, Université Blaise Pascal (Clermont-Ferrand II), 24 avenue des Landais, 63177 Aubière Cedex, France
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