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Fiedler J, Berland K, Borchert JW, Corkery RW, Eisfeld A, Gelbwaser-Klimovsky D, Greve MM, Holst B, Jacobs K, Krüger M, Parsons DF, Persson C, Presselt M, Reisinger T, Scheel S, Stienkemeier F, Tømterud M, Walter M, Weitz RT, Zalieckas J. Perspectives on weak interactions in complex materials at different length scales. Phys Chem Chem Phys 2023; 25:2671-2705. [PMID: 36637007 DOI: 10.1039/d2cp03349f] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nanocomposite materials consist of nanometer-sized quantum objects such as atoms, molecules, voids or nanoparticles embedded in a host material. These quantum objects can be exploited as a super-structure, which can be designed to create material properties targeted for specific applications. For electromagnetism, such targeted properties include field enhancements around the bandgap of a semiconductor used for solar cells, directional decay in topological insulators, high kinetic inductance in superconducting circuits, and many more. Despite very different application areas, all of these properties are united by the common aim of exploiting collective interaction effects between quantum objects. The literature on the topic spreads over very many different disciplines and scientific communities. In this review, we present a cross-disciplinary overview of different approaches for the creation, analysis and theoretical description of nanocomposites with applications related to electromagnetic properties.
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Affiliation(s)
- J Fiedler
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway.
| | - K Berland
- Department of Mechanical Engineering and Technology Management, Norwegian University of Life Sciences, Campus Ås Universitetstunet 3, 1430 Ås, Norway
| | - J W Borchert
- 1st Institute of Physics, Georg-August-University, Göttingen, Germany
| | - R W Corkery
- Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, SE 100 44 Stockholm, Sweden
| | - A Eisfeld
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany
| | - D Gelbwaser-Klimovsky
- Schulich Faculty of Chemistry and Helen Diller Quantum Center, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - M M Greve
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway.
| | - B Holst
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway.
| | - K Jacobs
- Experimental Physics, Saarland University, Center for Biophysics, 66123 Saarbrücken, Germany.,Max Planck School Matter to Life, 69120 Heidelberg, Germany
| | - M Krüger
- Institute for Theoretical Physics, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
| | - D F Parsons
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, CA, Italy
| | - C Persson
- Centre for Materials Science and Nanotechnology, University of Oslo, P. O. Box 1048 Blindern, 0316 Oslo, Norway.,Department of Materials Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - M Presselt
- Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - T Reisinger
- Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
| | - S Scheel
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, 18059 Rostock, Germany
| | - F Stienkemeier
- Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - M Tømterud
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway.
| | - M Walter
- Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - R T Weitz
- 1st Institute of Physics, Georg-August-University, Göttingen, Germany
| | - J Zalieckas
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway.
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Tadesse DB, Parsons DF. The impact of steric repulsion on the total free energy of electric double layer capacitors. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Yuan H, Liu G. Polyelectrolyte Complexation When Considering the Counterion-Mediated Hydrogen Bonding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8179-8186. [PMID: 35748635 DOI: 10.1021/acs.langmuir.2c01186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this work, we have investigated a pH-modulated complexation between two oppositely charged strong polyelectrolytes to demonstrate the effect of counterion-mediated hydrogen bonding (CMHB) on polyelectrolyte complexation. We have found that such a pH-modulated complexation cannot be understood without considering the CMHB. Thermodynamically, the effect of CMHB on the polyelectrolyte complexation is manifested by the alteration of both enthalpic and entropic contributions to the free energy change. The pH-dependent intrinsic ion-pairing and complex coacervation processes of the polyelectrolyte complexation can be understood when considering the CMHB. Our study demonstrates that both the extent of polyelectrolyte complex formation in bulk solutions and the formation of polyelectrolyte multilayers on surfaces are controlled by the pH-dependent intrinsic ion-pairing process. Furthermore, on the basis of the pH-dependent intrinsic ion pairing, the properties of the multilayers can be tuned by pH. This work provides a new strategy to control the polyelectrolyte complexation with counterions and will inspire new ideas for building advanced polyelectrolyte materials.
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Affiliation(s)
- Haiyang Yuan
- Department of Chemical Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, P. R. China 230026
| | - Guangming Liu
- Department of Chemical Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, P. R. China 230026
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Gregory KP, Elliott GR, Robertson H, Kumar A, Wanless EJ, Webber GB, Craig VSJ, Andersson GG, Page AJ. Understanding specific ion effects and the Hofmeister series. Phys Chem Chem Phys 2022; 24:12682-12718. [PMID: 35543205 DOI: 10.1039/d2cp00847e] [Citation(s) in RCA: 87] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Specific ion effects (SIE), encompassing the Hofmeister Series, have been known for more than 130 years since Hofmeister and Lewith's foundational work. SIEs are ubiquitous and are observed across the medical, biological, chemical and industrial sciences. Nevertheless, no general predictive theory has yet been able to explain ion specificity across these fields; it remains impossible to predict when, how, and to what magnitude, a SIE will be observed. In part, this is due to the complexity of real systems in which ions, counterions, solvents and cosolutes all play varying roles, which give rise to anomalies and reversals in anticipated SIEs. Herein we review the historical explanations for SIE in water and the key ion properties that have been attributed to them. Systems where the Hofmeister series is perturbed or reversed are explored, as is the behaviour of ions at the liquid-vapour interface. We discuss SIEs in mixed electrolytes, nonaqueous solvents, and in highly concentrated electrolyte solutions - exciting frontiers in this field with particular relevance to biological and electrochemical applications. We conclude the perspective by summarising the challenges and opportunities facing this SIE research that highlight potential pathways towards a general predictive theory of SIE.
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Affiliation(s)
- Kasimir P Gregory
- Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia. .,Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT 0200, Australia
| | - Gareth R Elliott
- Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
| | - Hayden Robertson
- Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
| | - Anand Kumar
- Flinders Institute of Nanoscale Science and Technology, College of Science and Engineering, Flinders University, South Australia 5001, Australia
| | - Erica J Wanless
- Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
| | - Grant B Webber
- School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Vincent S J Craig
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT 0200, Australia
| | - Gunther G Andersson
- Flinders Institute of Nanoscale Science and Technology, College of Science and Engineering, Flinders University, South Australia 5001, Australia
| | - Alister J Page
- Discipline of Chemistry, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
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Geng Z, Ma S, Li Y, Peng C, Jiang B, Liu P, Xu Y. Guanidinium-Based Ionic Liquids for High-Performance SO 2 Capture and Efficient Conversion for Cyclic Sulfite Esters. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03859] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zeyu Geng
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Shuoyang Ma
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Yuhang Li
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Chao Peng
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Binjian Jiang
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Peilin Liu
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
| | - Yun Xu
- School of Engineering, China Pharmaceutical University, Jiangsu, Nanjing 211198, P. R. China
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6
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Charge delocalization and hyperpolarizability in ionic liquids. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Qorbani N, Jalili AH, Adib B. Anomalously high solubility behavior of methanethiol in alkylimidazolium–based ionic liquids. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Parsons DF, Carucci C, Salis A. Buffer-specific effects arise from ionic dispersion forces. Phys Chem Chem Phys 2022; 24:6544-6551. [DOI: 10.1039/d2cp00223j] [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
Buffer solutions do not simply regulate pH, but also change the properties of protein molecules. The zeta potential of lysozyme varies significantly at the same buffer concentration, in the order...
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Ribeiro SS, Castro TG, Gomes CM, Marcos JC. Hofmeister effects on protein stability are dependent on the nature of the unfolded state. Phys Chem Chem Phys 2021; 23:25210-25225. [PMID: 34730580 DOI: 10.1039/d1cp02477a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interpretation of a salt's effect on protein stability traditionally discriminates low concentration regimes (<0.3 M), dominated by electrostatic forces, and high concentration regimes, generally described by ion-specific Hofmeister effects. However, increased theoretical and experimental studies have highlighted observations of the Hofmeister phenomena at concentration ranges as low as 0.001 M. Reasonable quantitative predictions of such observations have been successfully achieved throughout the inclusion of ion dispersion forces in classical electrostatic theories. This molecular description is also on the basis of quantitative estimates obtained resorting to surface/bulk solvent partition models developed for ion-specific Hofmeister effects. However, the latter are limited by the availability of reliable structures representative of the unfolded state. Here, we use myoglobin as a model to explore how ion-dependency on the nature of the unfolded state affects protein stability, combining spectroscopic techniques with molecular dynamic simulations. To this end, the thermal and chemical stability of myoglobin was assessed in the presence of three different salts (NaCl, (NH4)2SO4 and Na2SO4), at physiologically relevant concentrations (0-0.3 M). We observed mild destabilization of the native state induced by each ion, attributed to unfavorable neutralization and hydrogen-bonding with the protein side-chains. Both effects, combined with binding of Na+, Cl- and SO42- to the thermally unfolded state, resulted in an overall destabilization of the protein. Contrastingly, ion binding was hindered in the chemically unfolded conformation, due to occupation of the binding sites by urea molecules. Such mechanistic action led to a lower degree of destabilization, promoting surface tension effects that stabilized myoglobin according to the Hofmeister series. Therefore, we demonstrate that Hofmeister effects on protein stability are modulated by the heterogeneous physico-chemical nature of the unfolded state. Altogether, our findings evidence the need to characterize the structure of the unfolded state when attempting to dissect the molecular mechanisms underlying the effects of salts on protein stability.
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Affiliation(s)
- Sara S Ribeiro
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Tarsila G Castro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Cláudio M Gomes
- Biosystems and Integrative Sciences Institute, Faculdade de Ciências and Departamento de Química e Bioquímica, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - João C Marcos
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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11
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Galassi VV, Wilke N. On the Coupling between Mechanical Properties and Electrostatics in Biological Membranes. MEMBRANES 2021; 11:478. [PMID: 34203412 PMCID: PMC8306103 DOI: 10.3390/membranes11070478] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/18/2021] [Accepted: 06/22/2021] [Indexed: 12/24/2022]
Abstract
Cell membrane structure is proposed as a lipid matrix with embedded proteins, and thus, their emerging mechanical and electrostatic properties are commanded by lipid behavior and their interconnection with the included and absorbed proteins, cytoskeleton, extracellular matrix and ionic media. Structures formed by lipids are soft, dynamic and viscoelastic, and their properties depend on the lipid composition and on the general conditions, such as temperature, pH, ionic strength and electrostatic potentials. The dielectric constant of the apolar region of the lipid bilayer contrasts with that of the polar region, which also differs from the aqueous milieu, and these changes happen in the nanometer scale. Besides, an important percentage of the lipids are anionic, and the rest are dipoles or higher multipoles, and the polar regions are highly hydrated, with these water molecules forming an active part of the membrane. Therefore, electric fields (both, internal and external) affects membrane thickness, density, tension and curvature, and conversely, mechanical deformations modify membrane electrostatics. As a consequence, interfacial electrostatics appears as a highly important parameter, affecting the membrane properties in general and mechanical features in particular. In this review we focus on the electromechanical behavior of lipid and cell membranes, the physicochemical origin and the biological implications, with emphasis in signal propagation in nerve cells.
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Affiliation(s)
- Vanesa Viviana Galassi
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza M5500, Argentina;
- Instituto Interdisciplinario de Ciencias Básicas (ICB), Universidad Nacional de Cuyo, CONICET, Mendoza M5500, Argentina
| | - Natalia Wilke
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Universidad Nacional de Córdoba, CONICET, Córdoba X5000HUA, Argentina
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12
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Blackwell R, Hemmerle A, Baer A, Späth M, Peukert W, Parsons D, Sengupta K, Smith AS. On the control of dispersion interactions between biological membranes and protein coated biointerfaces. J Colloid Interface Sci 2021; 598:464-473. [PMID: 33951546 DOI: 10.1016/j.jcis.2021.02.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/03/2021] [Accepted: 02/17/2021] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS Interaction of cellular membranes with biointerfaces is of vital importance for a number of medical devices and implants. Adhesiveness of these surfaces and cells is often regulated by depositing a layer of bovine serum albumin (BSA) or other protein coatings. However, anomalously large separations between phospholipid membranes and the biointerfaces in various conditions and buffers have been observed, which could not be understood using available theoretical arguments. METHODS Using the Lifshitz theory, we here evaluate the distance-dependent Hamaker coefficient describing the dispersion interaction between a biointerface and a membrane to understand the relative positioning of two surfaces. Our theoretical modeling is supported by experiments where the biointerface is represented by a glass substrate with deposited BSA and protein layers. These biointerfaces are allowed to interact with giant unilamellar vesicles decorated with polyethylene glycol (PEG) using PEG lipids to mimic cellular membranes and their pericellular coat. RESULTS We demonstrate that careful treatment of the van der Waals interactions is critical for explaining the lack of adhesiveness of the membranes with protein-decorated biointerfaces. We show that BSA alone indeed passivates the glass, but depositing an additional protein layer on the surface BSA, or producing multiple layers of proteins and BSA results in repulsive dispersion forces responsible for 100 nm large equilibrium separations between the two surfaces.
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Affiliation(s)
- Robert Blackwell
- PULS Group, Department of Physics and Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF, Cauerstrasse 3, 91058 Erlangen, Germany.
| | - Arnaud Hemmerle
- Aix-Marseille Université, Centre Interdisciplinaire de Nanosciences de Marseille, CNRS, UMR 7325, Campus de Luminy, 13288 Marseille cedex 9, France.
| | - Andreas Baer
- PULS Group, Department of Physics and Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF, Cauerstrasse 3, 91058 Erlangen, Germany.
| | - Matthias Späth
- PULS Group, Department of Physics and Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF, Cauerstrasse 3, 91058 Erlangen, Germany
| | - Wolfgang Peukert
- Institute of Particle Technology, Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-Universität Erlangen-Nürnberg, Haberstrasse 9a, 91058 Erlangen, Germany.
| | - Drew Parsons
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, CA, Italy; Discipline of Physics, Chemistry and Mathematics, College of Science Health Engineering and Education, Murdoch University, Murdoch, 6150 WA, Australia.
| | - Kheya Sengupta
- Aix-Marseille Université, Centre Interdisciplinaire de Nanosciences de Marseille, CNRS, UMR 7325, Campus de Luminy, 13288 Marseille cedex 9, France.
| | - Ana-Sunčana Smith
- PULS Group, Department of Physics and Interdisciplinary Center for Nanostructured Films, Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF, Cauerstrasse 3, 91058 Erlangen, Germany; Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
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Comparison of Oxalate, Citrate and Tartrate Ions Adsorption in the Hydroxyapatite/Aqueous Electrolyte Solution System. COLLOIDS AND INTERFACES 2020. [DOI: 10.3390/colloids4040045] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The kinetics of adsorption/desorption of oxalate, citrate and tartrate anions was investigated using hydroxyapatite from solutions at the initial concentrations of 0.000001 and 0.001 mol/dm3 anions. The adsorption process from a solution with a concentration of 0.001 mol/dm3 takes place in three stages and is well described by the multiexponential equation of adsorption kinetics. The process of tartrate and citrate ion desorption after increasing the pH to 10 is irreversible, while the oxalate ions undergo significant desorption with the increasing pH. The adsorption of oxalate ions decreases with the increasing pH. This effect is weaker in the adsorption of citrate and tartrate ions. Ion adsorption studies were supplemented with the measurements of zeta potential, FTIR and particle distribution of hydroxyapatite particles.
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Synthesis and Characterization of New Lithium and Boron Based Metal Organic Frameworks with NLO Properties for Application in Neutron Capture Therapy. Processes (Basel) 2020. [DOI: 10.3390/pr8050558] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
In this work, we synthetized and characterized new crystalline materials with theranostic properties, i.e., they can be used both as bio-sensors and for “drug delivery”. The two solid crystalline compounds studied are Metal Organic Frameworks and have formulas Li[(C6H12O6)2B]·2H2O and Li[(C4H2O6)2B]·5.5H2O. They can be synthetized both with natural isotopes of Li and B or with 6Li and 10B isotopes, that can be explored for Neutron Capture Therapy (NCT) for anti-cancer treatment. The presence of chiral organic molecules, such as mannitol and tartaric acid, provides the NLO property to the crystals and thus their capability to generate the Second Harmonic, which is useful for applications as bio-sensors. The two compounds were characterized with X-ray Diffraction and the Second Harmonic Generation (SHG) responses were estimated by theoretical calculations, and the results were compared with experimental measurements of powdered samples. In order to test the behavior of such compounds under thermal neutron irradiation, we preliminary exposed one of the two compounds in the e_LiBANS facility at the Torino Physics Department. Preliminary results are reported.
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Mittal N, Benselfelt T, Ansari F, Gordeyeva K, Roth SV, Wågberg L, Söderberg LD. Ion-Specific Assembly of Strong, Tough, and Stiff Biofibers. Angew Chem Int Ed Engl 2019; 58:18562-18569. [PMID: 31600016 PMCID: PMC6916401 DOI: 10.1002/anie.201910603] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/01/2019] [Indexed: 11/29/2022]
Abstract
Designing engineering materials with high stiffness and high toughness is challenging as stiff materials tend to be brittle. Many biological materials realize this objective through multiscale (i.e., atomic- to macroscale) mechanisms that are extremely difficult to replicate in synthetic materials. Inspired from the architecture of such biological structures, we here present flow-assisted organization and assembly of renewable native cellulose nanofibrils (CNFs), which yields highly anisotropic biofibers characterized by a unique combination of high strength (1010 MPa), high toughness (62 MJ m-3 ) and high stiffness (57 GPa). We observed that properties of the fibers are primarily governed by specific ion characteristics such as hydration enthalpy and polarizability. A fundamental facet of this study is thus to elucidate the role of specific anion binding following the Hofmeister series on the mechanical properties of wet fibrillar networks, and link this to the differences in properties of dry nanostructured fibers. This knowledge is useful for rational design of nanomaterials and is critical for validation of specific ion effect theories. The bioinspired assembly demonstrated here is relevant example for designing high-performance materials with absolute structural control.
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Affiliation(s)
- Nitesh Mittal
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Department of Chemical EngineeringMassachusetts Institute of TechnologyCambridgeMA02142USA
| | - Tobias Benselfelt
- Wallenberg Wood Science CenterKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
| | - Farhan Ansari
- Department of Materials Science and EngineeringStanford UniversityStanfordCA94305-2205USA
| | - Korneliya Gordeyeva
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
| | - Stephan V. Roth
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Deutsches Elektronen-Synchrotron (DESY)22607HamburgGermany
| | - Lars Wågberg
- Wallenberg Wood Science CenterKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
| | - L. Daniel Söderberg
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of TechnologyStockholmSE-100 44Sweden
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Li Q, Ma S, Wei J, Wang S, Xu X, Huang K, Wang B, Yuan W, Zhu J. Preparation of Non-Planar-Ring Epoxy Thermosets Combining Ultra-Strong Shape Memory Effects and High Performance. Macromol Res 2019. [DOI: 10.1007/s13233-020-8064-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mittal N, Benselfelt T, Ansari F, Gordeyeva K, Roth SV, Wågberg L, Söderberg LD. Ion‐Specific Assembly of Strong, Tough, and Stiff Biofibers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910603] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nitesh Mittal
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Department of Chemical EngineeringMassachusetts Institute of Technology Cambridge MA 02142 USA
| | - Tobias Benselfelt
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
| | - Farhan Ansari
- Department of Materials Science and EngineeringStanford University Stanford CA 94305-2205 USA
| | - Korneliya Gordeyeva
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
| | - Stephan V. Roth
- Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Deutsches Elektronen-Synchrotron (DESY) 22607 Hamburg Germany
| | - Lars Wågberg
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
| | - L. Daniel Söderberg
- Linné FLOW CentreDepartment of MechanicsKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Stockholm SE-100 44 Sweden
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18
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The Hofmeister series: Specific ion effects in aqueous polymer solutions. J Colloid Interface Sci 2019; 555:615-635. [PMID: 31408761 DOI: 10.1016/j.jcis.2019.07.067] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 12/21/2022]
Abstract
Specific ion effects in aqueous polymer solutions have been under active investigation over the past few decades. The current state-of-the-art research is primarily focused on the understanding of the mechanisms through which ions interact with macromolecules and affect their solution stability. Hence, we herein first present the current opinion on the sources of ion-specific effects and review the relevant studies. This includes a summary of the molecular mechanisms through which ions can interact with polymers, quantification of the affinity of ions for the polymer surface, a thermodynamic description of the effects of salts on polymer stability, as well as a discussion on the different forces that contribute to ion-polymer interplay. Finally, we also highlight future research issues that call for further scrutiny. These include fundamental questions on the mechanisms of ion-specific effects and their correlation with polymer properties as well as a discussion on the specific ion effects in more complex systems such as mixed electrolyte solutions.
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19
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Parsons DF, Salis A. A thermodynamic correction to the theory of competitive chemisorption of ions at surface sites with nonelectrostatic physisorption. J Chem Phys 2019; 151:024701. [DOI: 10.1063/1.5096237] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Drew F. Parsons
- College of Science, Health, Engineering & Education, Murdoch University, 90 South St., Murdoch, WA 6150, Australia
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Unità Operativa Univ. Cagliari, Italy and Centro NanoBiotecnologie Sardegna (CNBS), Unità Operativa Univ. Cagliari,Italy
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20
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Marabello D, Antoniotti P, Benzi P, Cariati E, Lo Presti L, Canepa C. Developing new SrI 2 and β-D-fructopyranose-based metal-organic frameworks with nonlinear optical properties. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2019; 75:210-218. [PMID: 32830746 DOI: 10.1107/s2052520619001951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 02/04/2019] [Indexed: 06/11/2023]
Abstract
In the context of personalized medicine, there is a growing interest in materials bearing at the same time diagnostic and therapy functions. This article reports a cheap and easily reproducible procedure to obtain materials with a high potential for these applications. Three new strontium iodide-fructose-based metal-organic frameworks with formulae [Sr(C6H12O6)2]I2, [Sr2(C6H12O6)3(H2O)3]I4·0.5H2O and [Sr(C6H12O6)(H2O)3I]I differing in stoichiometry, symmetry and crystal packing, were obtained and characterized by X-ray diffraction. Bulk quantum simulations show that both the ions and the sugar are crucial in determining the predicted nonlinear response; also, the relative arrangement of various functional groups in the unit cell plays a role in the computed optical properties. Small fragments of the three compounds were selected for in vacuo calculations, proving that the reduced dimensions of the particles have a great influence on the nonlinear optical response. Despite the similar chemical composition of the three compounds, second harmonic generation measurements and in crystal and in vacuo theoretical calculations agree that one of the compounds is a much more efficient second harmonic emitter than the other two, and is thus a suitable candidate for bio-sensor applications.
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Affiliation(s)
- Domenica Marabello
- Dipartimento di Chimica, University of Torino, via P. Giuria 7, Torino, 10042, Italy
| | - Paola Antoniotti
- Dipartimento di Chimica, University of Torino, via P. Giuria 7, Torino, 10042, Italy
| | - Paola Benzi
- Dipartimento di Chimica, University of Torino, via P. Giuria 7, Torino, 10042, Italy
| | - Elena Cariati
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, Milano, 20133, Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, Milano, 20133, Italy
| | - Carlo Canepa
- Dipartimento di Chimica, University of Torino, via P. Giuria 7, Torino, 10042, Italy
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21
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Friedman R. Simulations of Biomolecules in Electrolyte Solutions. ADVANCED THEORY AND SIMULATIONS 2019. [DOI: 10.1002/adts.201800163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ran Friedman
- Department of Chemistry and Biomedical SciencesLinnæus UniversityKalmar SE‐391 82 Sweden
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22
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Nishita R, Kuroda K, Ota S, Endo T, Suzuki S, Ninomiya K, Takahashi K. Flame-retardant thermoplastics derived from plant cell wall polymers by single ionic liquid substitution. NEW J CHEM 2019. [DOI: 10.1039/c8nj04797a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We proposed flame retardant thermoplastics derived from plant-based polymers by substitution with a single phosphonate-type ionic liquid species.
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Affiliation(s)
- Ryunosuke Nishita
- Faculty of Biological Science and Technology
- Institute of Science and Engineering
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Kosuke Kuroda
- Faculty of Biological Science and Technology
- Institute of Science and Engineering
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Shohei Ota
- Faculty of Biological Science and Technology
- Institute of Science and Engineering
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Takatsugu Endo
- Faculty of Science and Engineering
- Doshisha University
- Kyoto 610-0394
- Japan
| | - Shiori Suzuki
- Faculty of Biological Science and Technology
- Institute of Science and Engineering
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Kazuaki Ninomiya
- Institute for Frontier Science Initiative
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Kenji Takahashi
- Faculty of Biological Science and Technology
- Institute of Science and Engineering
- Kanazawa University
- Kanazawa 920-1192
- Japan
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23
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Fiedler J, Parsons DF, Burger FA, Thiyam P, Walter M, Brevik I, Persson C, Buhmann SY, Boström M. Impact of effective polarisability models on the near-field interaction of dissolved greenhouse gases at ice and air interfaces. Phys Chem Chem Phys 2019; 21:21296-21304. [DOI: 10.1039/c9cp03165k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The microscopic behaviour of neutral and dissolved particles near the boundary interface has been investigated. Depending on the applied excess polarisability model the results change dramatically from attraction to repulsion.
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Affiliation(s)
- Johannes Fiedler
- Physikalisches Institut
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
- Centre for Materials Science and Nanotechnology
| | | | | | | | - Michael Walter
- Physikalisches Institut
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
- FIT Freiburg Centre for Interactive Materials and Bioinspired Technologies
| | - I. Brevik
- Department of Energy and Process Engineering
- Norwegian University of Science and Technology
- NO-7491 Trondheim
- Norway
| | - Clas Persson
- Centre for Materials Science and Nanotechnology
- Department of Physics
- University of Oslo
- NO-0316 Oslo
- Norway
| | - Stefan Yoshi Buhmann
- Physikalisches Institut
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
- Freiburg Institute for Advanced Studies
| | - Mathias Boström
- Centre for Materials Science and Nanotechnology
- Department of Physics
- University of Oslo
- NO-0316 Oslo
- Norway
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24
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Mahalik JP, Sumpter BG, Kumar R. Understanding the effects of symmetric salt on the structure of a planar dipolar polymer brush. J Chem Phys 2018; 149:163334. [PMID: 30384744 DOI: 10.1063/1.5037077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The effects of added salt on a planar dipolar polymer brush immersed in a polar solvent are studied using a field theoretic approach. The field theory developed in this work provides a unified framework for capturing effects of the inhomogeneous dielectric function, translational entropy of ions, crowding due to finite sized ions, ionic size asymmetry, and ion solvation. In this paper, we use the theory to study the effects of ion sizes, their concentration, and ion-solvation on the polymer segment density profiles of a dipolar brush immersed in a solution containing symmetric salt ions. The interplay of crowding effects, translational entropy, and ion solvation is shown to exhibit either an increase or decrease in the brush height. Translational entropy and crowding effects due to finite sizes of the ions tend to cause expansion of the brush as well as uniform distribution of the ions. By contrast, ion-solvation effects, which tend to be stronger for smaller ions, are shown to cause shrinkage of the brush and inhomogeneous distribution of the ions.
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Affiliation(s)
- Jyoti P Mahalik
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Bobby G Sumpter
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Rajeev Kumar
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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25
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Mazzini V, Craig VSJ. Volcano Plots Emerge from a Sea of Nonaqueous Solvents: The Law of Matching Water Affinities Extends to All Solvents. ACS CENTRAL SCIENCE 2018; 4:1056-1064. [PMID: 30159403 PMCID: PMC6107870 DOI: 10.1021/acscentsci.8b00348] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Indexed: 05/25/2023]
Abstract
The properties of all electrolyte solutions, whether the solvent is aqueous or nonaqueous, are strongly dependent on the nature of the ions in solution. The consequences of these specific-ion effects are significant and manifest from biochemistry to battery technology. The "law of matching water affinities" (LMWA) has proven to be a powerful concept for understanding and predicting specific-ion effects in a wide range of systems, including the stability of proteins and colloids, solubility, the behavior of lipids, surfactants, and polyelectrolytes, and catalysis in water and ionic liquids. It provides a framework for considering how the ions of an electrolyte interact in manifestations of ion specificity and therefore represents a considerable conceptual advance on the Hofmeister or lyotropic series in understanding specific-ion effects. Underpinning the development of the law of matching water affinities were efforts to interpret the so-called "volcano plots". Volcano plots exhibit a stark inverted "V" shape trend for a range of electrolyte dependent solution properties when plotted against the difference in solvation energies of the ions that constitute the electrolyte. Here we test the hypothesis that volcano plots are also manifest in nonaqueous solvents in order to investigate whether the LMWA can be extended to nonaqueous solvents. First we examine the standard solvation energies of electrolytes in nonaqueous solvents for evidence of volcano trends and then extend this to include the solubility and the activity/osmotic coefficients of electrolytes, in order to explore real electrolyte concentrations. We find that with respect to the solvent volcano trends are universal, which brings into question the role of solvent affinity in the manifestation of specific-ion effects. We also show that the volcano trends are maintained when the ionic radii are used in place of the absolute solvation energies as the abscissa, thus showing that ion sizes, rather than the solvent affinities, fundamentally determine the manifestation of ion specificity. This leads us to propose that specific-ion effects across all solvents including water can be understood by considering the relative sizes of the anion and cation, provided the ions are spherical or tetrahedral. This is an extension of the LMWA to all solvents in which the "water affinity" is replaced with the relative size of the anion and cation.
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26
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Mazzini V, Liu G, Craig VSJ. Probing the Hofmeister series beyond water: Specific-ion effects in non-aqueous solvents. J Chem Phys 2018; 148:222805. [PMID: 29907022 DOI: 10.1063/1.5017278] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
We present an experimental investigation of specific-ion effects in non-aqueous solvents, with the aim of elucidating the role of the solvent in perturbing the fundamental ion-specific trend. The focus is on the anions: CH3COO->F->Cl->Br->I->ClO4->SCN- in the solvents water, methanol, formamide, dimethyl sulfoxide (DMSO), and propylene carbonate (PC). Two types of experiments are presented. The first experiment employs the technique of size exclusion chromatography to evaluate the elution times of electrolytes in the different solvents. We observe that the fundamental (Hofmeister) series is observed in water and methanol, whilst the series is reversed in DMSO and PC. No clear series is observed for formamide. The second experiment uses the quartz crystal microbalance technique to follow the ion-induced swelling and collapse of a polyelectrolyte brush. Here the fundamental series is observed in the protic solvents water, methanol, and formamide, and the series is once again reversed in DMSO and PC. These behaviours are not attributed to the protic/aprotic nature of the solvents, but rather to the polarisability of the solvents and are due to the competition between the interaction of ions with the solvent and the surface. A rule of thumb is proposed for ion specificity in non-aqueous solvents. In weakly polarisable solvents, the trends in specific-ion effects will follow those in water, whereas in strongly polarisable solvents the reverse trend will be observed. Solvents of intermediate polarisability will give weak specific-ion effects.
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Affiliation(s)
- Virginia Mazzini
- Department of Applied Mathematics, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Guangming Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Vincent S J Craig
- Department of Applied Mathematics, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia
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27
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Fiedler J, Persson C, Boström M, Buhmann SY. Orientational Dependence of the van der Waals Interactions for Finite-Sized Particles. J Phys Chem A 2018; 122:4663-4669. [PMID: 29683677 DOI: 10.1021/acs.jpca.8b01989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dispersion forces, especially van der Waals forces as interactions between neutral and polarizable particles act at small distances between two objects. Their theoretical origin lies in the electromagnetic interaction between induced dipole moments caused by the vacuum fluctuations of the ground-state electromagnetic field. The resulting theory well describes the experimental situation in the limit of the point dipole assumption. At smaller distances, where the finite size of the particles has to be taken into account, this description fails and has to be corrected by higher orders of the multipole expansion, such as quadrupole moments and so on. With respect to the complexity of the spatial properties of the particles this task requires a considerable effort. In order to describe the van der Waals interaction between such particles, we apply the established method of a spatially spread out polarizability distribution to approximate the higher orders of the multipole expansion. We thereby construct an effective theory for effects from anisotropy and finite size on the van der Waals potential.
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Affiliation(s)
- Johannes Fiedler
- Physikalisches Institut , Albert-Ludwigs-Universität Freiburg , Hermann-Herder-Strasse 3 , 79104 Freiburg , Germany.,Centre for Materials Science and Nanotechnology, Department of Physics , University of Oslo , P.O. Box 1048 Blindern, NO-0316 Oslo , Norway
| | - Clas Persson
- Centre for Materials Science and Nanotechnology, Department of Physics , University of Oslo , P.O. Box 1048 Blindern, NO-0316 Oslo , Norway
| | - Mathias Boström
- Department of Energy and Process Engineering , Norwegian University of Science and Technology , NO-7491 Trondheim , Norway
| | - Stefan Y Buhmann
- Physikalisches Institut , Albert-Ludwigs-Universität Freiburg , Hermann-Herder-Strasse 3 , 79104 Freiburg , Germany.,Freiburg Institute for Advanced Studies , Albert-Ludwigs-Universität Freiburg , Albertstrasse 19 , 79104 Freiburg , Germany
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28
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Fiedler J, Thiyam P, Kurumbail A, Burger FA, Walter M, Persson C, Brevik I, Parsons DF, Boström M, Buhmann SY. Effective Polarizability Models. J Phys Chem A 2017; 121:9742-9751. [DOI: 10.1021/acs.jpca.7b10159] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johannes Fiedler
- Physikalisches
Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
| | - Priyadarshini Thiyam
- Department
of Materials Science and Engineering, KTH, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
- Centre
for Materials Science and Nanotechnology, Department of Physics, University of Oslo, P.O.
Box 1048, Blindern, NO-0316 Oslo, Norway
| | - Anurag Kurumbail
- Department
of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Friedrich A. Burger
- Physikalisches
Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
| | - Michael Walter
- Physikalisches
Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
- FIT Freiburg Centre for Interactive Materials and Bioinspired Technologies, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Fraunhofer IWM, Wöhlerstrasse
11, D-79108 Freiburg
i. Br., Germany
| | - Clas Persson
- Department
of Materials Science and Engineering, KTH, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
- Centre
for Materials Science and Nanotechnology, Department of Physics, University of Oslo, P.O.
Box 1048, Blindern, NO-0316 Oslo, Norway
| | - Iver Brevik
- Department
of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Drew F. Parsons
- School
of Engineering and IT, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia
| | - Mathias Boström
- Department
of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Stefan Y. Buhmann
- Physikalisches
Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
- Freiburg
Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg, Albertstrasse 19, 79104 Freiburg, Germany
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29
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Carucci C, Salis A, Magner E. Specific Ion Effects on the Mediated Oxidation of NADH. ChemElectroChem 2017. [DOI: 10.1002/celc.201700672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Cristina Carucci
- Department of Chemical Sciences, Synthesis and Solid State Pharmaceutical Centre, Bernal Institute; University of Limerick; Limerick Ireland
| | - Andrea Salis
- Department of Chemical and Geological Sciences; University of Cagliari; Cittadella Universitaria, SS 554 bivio Sestu 09042 Monserrato (CA) Italy
| | - Edmond Magner
- Department of Chemical Sciences, Synthesis and Solid State Pharmaceutical Centre, Bernal Institute; University of Limerick; Limerick Ireland
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30
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Marabello D, Antoniotti P, Benzi P, Canepa C, Mortati L, Sassi MP. Synthesis, structure and non-linear optical properties of new isostructural β-D-fructopyranose alkaline halide metal-organic frameworks: a theoretical and an experimental study. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2017; 73:737-743. [PMID: 28762983 DOI: 10.1107/s2052520617005285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
In this work four metal-organic framework isomorphs, based on fructose and alkali-earth halogenides, were investigated to better understand the effect of the size of the cation and the different polarizability of the anion on the calculated hyperpolarizability and optical susceptibility, which are correlated to non-linear optical properties. The compounds were characterized by X-ray diffraction and the first hyperpolarizability and the second-order susceptibility were obtained from theoretical calculations. Furthermore, a new method to measure the second-harmonic (SH) efficiency on a small quantity of powder at different wavelengths of excitation was optimized and an attempt was made to assess the reduction of the SH intensity for small quantities of nano-crystals, in order to ascertain the possibility of applications in biological systems. The results of this work show that both the intrinsic nature of the anion and the induced dissociation of cations and anions by fructose play a role in the second-harmonic generating properties of such compounds.
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Affiliation(s)
- Domenica Marabello
- Dipartimento di Chimica, Universitá degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Paola Antoniotti
- Dipartimento di Chimica, Universitá degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Paola Benzi
- Dipartimento di Chimica, Universitá degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Carlo Canepa
- Dipartimento di Chimica, Universitá degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Leonardo Mortati
- INRIM - Istituto Nazionale di Ricerca Metrologica, Torino, Italy
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31
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Parsons DF, Duignan TT, Salis A. Cation effects on haemoglobin aggregation: balance of chemisorption against physisorption of ions. Interface Focus 2017. [PMID: 28630674 DOI: 10.1098/rsfs.2016.0137] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A theoretical model of haemoglobin is presented to explain an anomalous cationic Hofmeister effect observed in protein aggregation. The model quantifies competing proposed mechanisms of non-electrostatic physisorption and chemisorption. Non-electrostatic physisorption is stronger for larger, more polarizable ions with a Hofmeister series Li+< K+< Cs+. Chemisorption at carboxylate groups is stronger for smaller kosmotropic ions, with the reverse series Li+ > K+ > Cs+. We assess aggregation using second virial coefficients calculated from theoretical protein-protein interaction energies. Taking Cs+ to not chemisorb, comparison with experiment yields mildly repulsive cation-carboxylate binding energies of 0.48 kBT for Li+ and 3.0 kBT for K+. Aggregation behaviour is predominantly controlled by short-range protein interactions. Overall, adsorption of the K+ ion in the middle of the Hofmeister series is stronger than ions at either extreme since it includes contributions from both physisorption and chemisorption. This results in stronger attractive forces and greater aggregation with K+, leading to the non-conventional Hofmeister series K+ > Cs+ ≈ Li+.
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Affiliation(s)
- Drew F Parsons
- School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia
| | - Timothy T Duignan
- Physical Science Division, Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352, USA
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato (CA), Italy
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32
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Yang T, Fukuda R, Cammi R, Ehara M. Diels–Alder Cycloaddition of Cyclopentadiene and C60 at the Extreme High Pressure. J Phys Chem A 2017; 121:4363-4371. [PMID: 28510432 DOI: 10.1021/acs.jpca.7b02805] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Yang
- Institute for Molecular Science, Research Center for
Computational Science, Myodaiji, Okazaki 444-8585, Japan
- Elements
Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8245, Japan
| | - Ryoichi Fukuda
- Elements
Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8245, Japan
- Department
of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Roberto Cammi
- Department
of Chemical Science, Life Sciences, and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Masahiro Ehara
- Institute for Molecular Science, Research Center for
Computational Science, Myodaiji, Okazaki 444-8585, Japan
- Elements
Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8245, Japan
- SOKENDAI, The Graduate University for Advanced Studies, Myodaiji, Okazaki 444-8585, Japan
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33
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Luo W, Hirajima T, Sasaki K. Selective adsorption of inorganic anions on unwashed and washed hexadecyl pyridinium-modified montmorillonite. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Endo T, Nemugaki S, Matsushita Y, Sakai Y, Ozaki H, Hiejima Y, Kimura Y, Takahashi K. Fast solute diffusivity in ionic liquids with silyl or siloxane groups studied by the transient grating method. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.03.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Hofmeister effects at low salt concentration due to surface charge transfer. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.05.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Khoshnood A, Lukanov B, Firoozabadi A. Temperature Effect on Micelle Formation: Molecular Thermodynamic Model Revisited. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2175-2183. [PMID: 26854650 DOI: 10.1021/acs.langmuir.6b00039] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Temperature affects the aggregation of macromolecules such as surfactants, polymers, and proteins in aqueous solutions. The effect on the critical micelle concentration (CMC) is often nonmonotonic. In this work, the effect of temperature on the micellization of ionic and nonionic surfactants in aqueous solutions is studied using a molecular thermodynamic model. Previous studies based on this technique have predicted monotonic behavior for ionic surfactants. Our investigation shows that the choice of tail transfer energy to describe the hydrophobic effect between the surfactant tails and the polar solvent molecules plays a key role in the predicted CMC. We modify the tail transfer energy by taking into account the effect of the surfactant head on the neighboring methylene group. The modification improves the description of the CMC and the predicted micellar size for aqueous solutions of sodium n-alkyl sulfate, dodecyl trimethylammonium bromide (DTAB), and n-alkyl polyoxyethylene. The new tail transfer energy describes the nonmonotonic behavior of CMC versus temperature. In the DTAB-water system, we redefine the head size by including the methylene group, next to the nitrogen, in the head. The change in the head size along with our modified tail transfer energy improves the CMC and aggregation size prediction significantly. Tail transfer is a dominant energy contribution in micellar and microemulsion systems. It also promotes the adsorption of surfactants at fluid-fluid interfaces and affects the formation of adsorbed layer at fluid-solid interfaces. Our proposed modifications have direct applications in the thermodynamic modeling of the effect of temperature on molecular aggregation, both in the bulk and at the interfaces.
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Affiliation(s)
- Atefeh Khoshnood
- Reservoir Engineering Research Institute , Palo Alto, California 94301, United States
| | - Boris Lukanov
- Reservoir Engineering Research Institute , Palo Alto, California 94301, United States
| | - Abbas Firoozabadi
- Reservoir Engineering Research Institute , Palo Alto, California 94301, United States
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06510, United States
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The impact of nonelectrostatic physisorption of ions on free energies and forces between redox electrodes: ion-specific repulsive peaks. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Abstract
Understanding interactions between inorganic nanoparticles (NPs) is central to comprehension of self-organization processes and a wide spectrum of physical, chemical, and biological phenomena. However, quantitative description of the interparticle forces is complicated by many obstacles that are not present, or not as severe, for microsize particles (μPs). Here we analyze the sources of these difficulties and chart a course for future research. Such difficulties can be traced to the increased importance of discreteness and fluctuations around NPs (relative to μPs) and to multiscale collective effects. Although these problems can be partially overcome by modifying classical theories for colloidal interactions, such an approach fails to manage the nonadditivity of electrostatic, van der Waals, hydrophobic, and other interactions at the nanoscale. Several heuristic rules identified here can be helpful for discriminating between additive and nonadditive nanoscale systems. Further work on NP interactions would benefit from embracing NPs as strongly correlated reconfigurable systems with diverse physical elements and multiscale coupling processes, which will require new experimental and theoretical tools. Meanwhile, the similarity between the size of medium constituents and NPs makes atomic simulations of their interactions increasingly practical. Evolving experimental tools can stimulate improvement of existing force fields. New scientific opportunities for a better understanding of the electronic origin of classical interactions are converging at the scale of NPs.
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Affiliation(s)
- Carlos A Silvera Batista
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA. Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Nicholas A Kotov
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA. Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
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40
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Consequences of shifted ion adsorption equilibria due to nonelectrostatic interaction potentials in electrical double layers. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Thiyam P, Persson C, Parsons D, Huang D, Buhmann S, Boström M. Trends of CO2 adsorption on cellulose due to van der Waals forces. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Carucci C, Haltenort P, Salazar M, Salis A, Magner E. Hofmeister Phenomena in Bioelectrochemistry: The Supporting Electrolyte Affects the Response of Glucose Electrodes. ChemElectroChem 2015. [DOI: 10.1002/celc.201402412] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Supercapacitors have an asymmetric electrode potential and charge due to nonelectrostatic electrolyte interactions. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.084] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Thiyam P, Persson C, Sernelius BE, Parsons DF, Malthe-Sørenssen A, Boström M. Intermolecular Casimir-Polder forces in water and near surfaces. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2014; 90:032122. [PMID: 25314410 DOI: 10.1103/physreve.90.032122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Indexed: 06/04/2023]
Abstract
The Casimir-Polder force is an important long-range interaction involved in adsorption and desorption of molecules in fluids. We explore Casimir-Polder interactions between methane molecules in water, and between a molecule in water near SiO(2) and hexane surfaces. Inclusion of the finite molecular size in the expression for the Casimir-Polder energy leads to estimates of the dispersion contribution to the binding energies between molecules and between one molecule and a planar surface.
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Affiliation(s)
- Priyadarshini Thiyam
- Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Clas Persson
- Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden and Department of Physics, University of Oslo, P.O. Box 1048 Blindern, NO-0316 Oslo, Norway and Centre for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1048 Blindern, NO-0316 Oslo, Norway
| | - Bo E Sernelius
- Division of Theory and Modeling, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Drew F Parsons
- Department of Applied Mathematics, Australian National University, Canberra, Australia
| | | | - Mathias Boström
- Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden and Centre for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1048 Blindern, NO-0316 Oslo, Norway and Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
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Salis A, Ninham BW. Models and mechanisms of Hofmeister effects in electrolyte solutions, and colloid and protein systems revisited. Chem Soc Rev 2014; 43:7358-77. [PMID: 25099516 DOI: 10.1039/c4cs00144c] [Citation(s) in RCA: 382] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Specific effects of electrolytes have posed a challenge since the 1880's. The pioneering work was that of Franz Hofmeister who studied specific salt induced protein precipitation. These effects are the rule rather the exception and are ubiquitous in chemistry and biology. Conventional electrostatic theories (Debye-Hückel, DLVO, etc.) cannot explain such effects. Over the past decades it has been recognised that additional quantum mechanical dispersion forces with associated hydration effects acting on ions are missing from theory. In parallel Collins has proposed a phenomenological set of rules (the law of matching water affinities, LMWA) which explain and bring to order the order of ion-ion and ion-surface site interactions at a qualitative level. The two approaches appear to conflict. Although the need for inclusion of quantum dispersion forces in one form or another is not questioned, the modelling has often been misleading and inappropriate. It does not properly describe the chemical nature (kosmotropic/chaotropic or hard/soft) of the interacting species. The success of the LMWA rules lies in the fact that they do. Here we point to the way that the two apparently opposing approaches might be reconciled. Notwithstanding, there are more challenges, which deal with the effect of dissolved gas and its connection to 'hydrophobic' interactions, the problem of water at different temperatures and 'water structure' in the presence of solutes. They take us to another dimension that requires the rebuilding of theoretical foundations.
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Affiliation(s)
- Andrea Salis
- Department of Chemical and Geological Science, University of Cagliari, Italy and CSGI.
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Predicting ion specific capacitances of supercapacitors due to quantum ionic interactions. J Colloid Interface Sci 2014; 427:67-72. [DOI: 10.1016/j.jcis.2014.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/09/2014] [Accepted: 01/13/2014] [Indexed: 11/23/2022]
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Lukanov B, Firoozabadi A. Specific ion effects on the self-assembly of ionic surfactants: a molecular thermodynamic theory of micellization with dispersion forces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6373-6383. [PMID: 24832546 DOI: 10.1021/la501008x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The self-assembly of amphiphilic molecules is a key process in numerous biological and chemical systems. When salts are present, the formation and properties of molecular aggregates can be altered dramatically by the specific types of ions in the electrolyte solution. We present a molecular thermodynamic model for the micellization of ionic surfactants that incorporates quantum dispersion forces to account for specific ion effects explicitly through ionic polarizabilities and sizes. We assume that counterions are distributed in the diffuse region according to a modified Poisson-Boltzmann equation and can reach all the way to the micelle surface of charge. Stern layers of steric exclusion or distances of closest approach are not imposed externally; these are accounted for through the counterion radial distribution profiles due to the incorporation of dispersion potentials, resulting in a simple and straightforward treatment. There are no adjustable or fitted parameters in the model, which allows for a priori quantitative prediction of surfactant aggregation behavior based only on the initial composition of the system and the surfactant molecular structure. The theory is validated by accurately predicting the critical micelle concentration (CMC) for the well-studied sodium dodecyl sulfate (SDS) surfactant and its alkaline-counterion derivatives in mono- and divalent salts, as well as the molecular structure parameters of SDS micelles such as aggregation numbers and micelle surface potential.
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Affiliation(s)
- Boris Lukanov
- Reservoir Engineering Research Institute , 595 Lytton Avenue, Suite B, Palo Alto, California 94301, United States
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48
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Hou M, Lu R, Yu A. Polarizability series of aqueous polyatomic anions revealed by femtosecond Kerr effect spectroscopy. RSC Adv 2014. [DOI: 10.1039/c4ra00367e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Femtosecond OHD-RIKES measurements show that the hyperpolarizability series of aqueous polyatomic anions increases in the following sequence HPO42− < HSO4− < CO32− < AC− < NO3− < SCN−.
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Affiliation(s)
- Mengqi Hou
- Department of Chemistry
- Renmin University of China
- Beijing 100872, P. R. China
| | - Rong Lu
- Department of Chemistry
- Renmin University of China
- Beijing 100872, P. R. China
| | - Anchi Yu
- Department of Chemistry
- Renmin University of China
- Beijing 100872, P. R. China
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49
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Bahrami H, Tabrizchi M, Farrokhpour H. Protonation of caffeine: A theoretical and experimental study. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.01.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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50
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Suceska M, Ang HG, Serene Chan HY. Study of the Effect of Covolumes in BKW Equation of State on Detonation Properties of CHNO Explosives. PROPELLANTS EXPLOSIVES PYROTECHNICS 2013. [DOI: 10.1002/prep.201100150] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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