1
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Stefancu A, Gargiulo J, Laufersky G, Auguié B, Chiş V, Le Ru EC, Liu M, Leopold N, Cortés E. Interface-Dependent Selectivity in Plasmon-Driven Chemical Reactions. ACS NANO 2023; 17:3119-3127. [PMID: 36722817 DOI: 10.1021/acsnano.2c12116] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Plasmonic nanoparticles can drive chemical reactions powered by sunlight. These processes involve the excitation of surface plasmon resonances (SPR) and the subsequent charge transfer to adsorbed molecular orbitals. Nonetheless, controlling the flow of energy and charge from SPR to adsorbed molecules is still difficult to predict or tune. Here, we show the crucial role of halide ions in modifying the energy landscape of a plasmon-driven chemical reaction by carefully engineering the nanoparticle-molecule interface. By doing so, the selectivity of plasmon-driven chemical reactions can be controlled, either enhancing or inhibiting the metal-molecule charge and energy transfer or by regulating the vibrational pumping rate. These results provide an elegant method for controlling the energy flow from plasmonic nanoparticles to adsorbed molecules, in situ, and selectively targeting chemical bonds by changing the chemical nature of the metal-molecule interface.
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Affiliation(s)
- Andrei Stefancu
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Julian Gargiulo
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
| | - Geoffry Laufersky
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Baptiste Auguié
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Vasile Chiş
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Eric C Le Ru
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Min Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha 410083, P. R. China
| | - Nicolae Leopold
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
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2
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Electric Double Layer: The Good, the Bad, and the Beauty. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3040052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The electric double layer (EDL) is the most important region for electrochemical and heterogeneous catalysis. Because of it, its modeling and investigation are something that can be found in the literature for a long time. However, nowadays, it is still a hot topic of investigation, mainly because of the improvement in simulation and experimental techniques. The present review aims to present the classical models for the EDL, as well as presenting how this region affects electrochemical data in everyday experimentation, how to obtain and interpret information about EDL, and, finally, how to obtain some molecular point of view insights on it.
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3
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Dourado AH, Silva-Jr NA, Neves-Garcia T, Braga AH, Rossi LM, de.Torresi SIC. Boosting SO2 electrocatalytic oxidation reaction on highly dispersed subnanometric Au/TiO2 catalyst. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141339] [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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4
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Ya. Zakharova L, Vasilieva EA, Mirgorodskaya AB, Zakharov SV, Pavlov RV, Kashapova NE, Gaynanova GA. Hydrotropes: solubilization of nonpolar compounds and modification of surfactant solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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5
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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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6
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Gregory KP, Wanless EJ, Webber GB, Craig VSJ, Page AJ. The electrostatic origins of specific ion effects: quantifying the Hofmeister series for anions. Chem Sci 2021; 12:15007-15015. [PMID: 34976339 PMCID: PMC8612401 DOI: 10.1039/d1sc03568a] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/15/2021] [Indexed: 12/23/2022] Open
Abstract
Life as we know it is dependent upon water, or more specifically salty water. Without dissolved ions, the interactions between biological molecules are insufficiently complex to support life. This complexity is intimately tied to the variation in properties induced by the presence of different ions. These specific ion effects, widely known as Hofmeister effects, have been known for more than 100 years. They are ubiquitous throughout the chemical, biological and physical sciences. The origin of these effects and their relative strengths is still hotly debated. Here we reconsider the origins of specific ion effects through the lens of Coulomb interactions and establish a foundation for anion effects in aqueous and non-aqueous environments. We show that, for anions, the Hofmeister series can be explained and quantified by consideration of site-specific electrostatic interactions. This can simply be approximated by the radial charge density of the anion, which we have calculated for commonly reported ions. This broadly quantifies previously unpredictable specific ion effects, including those known to influence solution properties, virus activities and reaction rates. Furthermore, in non-aqueous solvents, the relative magnitude of the anion series is dependent on the Lewis acidity of the solvent, as measured by the Gutmann Acceptor Number. Analogous SIEs for cations bear limited correlation with their radial charge density, highlighting a fundamental asymmetry in the origins of specific ion effects for anions and cations, due to competing non-Coulombic phenomena.
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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
| | - 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 Applied Mathematics, Research School of Physics, Australian National University Canberra ACT 0200 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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7
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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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8
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Bunkin NF, Shkirin AV, Penkov NV, Goltayev MV, Ignatiev PS, Gudkov SV, Izmailov AY. Effect of Gas Type and Its Pressure on Nanobubble Generation. Front Chem 2021; 9:630074. [PMID: 33869139 PMCID: PMC8044797 DOI: 10.3389/fchem.2021.630074] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/13/2021] [Indexed: 12/31/2022] Open
Abstract
The dependence of the volume number density of ion-stabilized gas nanobubbles (bubstons) on the type of gas and the pressure created by this gas in deionized water and saline solution has been investigated. The range of external pressures from the saturated water vapor (17 Torr) to 5 atm was studied. It turned out that the growth rate of the volume number density of bubstons is controlled by the magnitude of the molecular polarizability of dissolved gases. The highest densities of bubstons were obtained for gases whose molecules have a dipole moment. At fixed external pressure and the polarizability of gas molecules, the addition of external ions leads to a sharp increase in the content of bubstons.
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Affiliation(s)
- Nikolai F Bunkin
- Bauman Moscow State Technical University, Moscow, Russia.,Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
| | - Alexey V Shkirin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia.,National Research Nuclear University MEPhI, Moscow, Russia
| | - Nikita V Penkov
- Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institute of Cell Biophysics of the Russian Academy of Sciences, Moscow, Russia
| | - Mikhail V Goltayev
- Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institute of Cell Biophysics of the Russian Academy of Sciences, Moscow, Russia
| | - Pavel S Ignatiev
- JSC "Production Association "Ural Optical and Mechanical Plant named after E.S. Yalamov" (UOMZ), Ekaterinburg, Russia
| | - Sergey V Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia.,Federal State Budgetary Scientific Institution "Federal Scientific Agroengineering Center VIM"(FSAC VIM), Moscow, Russia
| | - Andrey Yu Izmailov
- Federal State Budgetary Scientific Institution "Federal Scientific Agroengineering Center VIM"(FSAC VIM), Moscow, Russia
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9
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Dourado AHB, Munhos RL, Silva NA, Colle VD, Carvalho GGA, Oliveira PV, Arenz M, Varela H, Córdoba de Torresi SI. Opportunities and Knowledge Gaps of SO2 Electrocatalytic Oxidation for H2 Electrochemical Generation. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01336] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- André H. B. Dourado
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
| | - Renan L. Munhos
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
| | - Norberto A. Silva
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
| | - Vinícius Del Colle
- Departamento de Química, Universidade Federal de Alagoas−Campus Arapiraca, Av. Manoel Severino Barbosa, 57309-005 Arapiraca, Alagoas, Brazil
- Instituto de Química de São Carlos, Universidade de São Paulo, C.P. 780, CEP 13560-970, São Carlos, São Paulo, Brazil
| | - Gabriel G. A. Carvalho
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
| | - Pedro V. Oliveira
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
| | - Matthias Arenz
- Department of Chemistry and Biochemistry, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Hamilton Varela
- Instituto de Química de São Carlos, Universidade de São Paulo, C.P. 780, CEP 13560-970, São Carlos, São Paulo, Brazil
| | - Susana I. Córdoba de Torresi
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 05508-080 São Paulo, São Paulo, Brazil
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10
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Elastic compliance as a tool to understand Hofmeister ion specific effect in DMPC liposomes. Biophys Chem 2019; 249:106148. [PMID: 30981138 DOI: 10.1016/j.bpc.2019.106148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 11/21/2022]
Abstract
Elastic compliance of DMPC liposomes with Hofmeister electrolytes: NaCl, Na2SO4, Na2CO3, NaNO3, KCl and MgCl2 studied using Quartz crystal microbalance with dissipation has been correlated with changes in their lamellar spacing from SAXS. The study suggests that hydration water of the different ions has an effect on the overall packing of the lipid bilayer that results as either a dehydrated liposome or where water smears the surface of the liposomes. Ratio of hydrogen bonded carbonyl and phosphate of polar region of the liposomes from ATR-FTIR spectroscopy, suggests that the polar groups are less hydrated due to the displacement of water by the electrolytes compared to pure DMPC and ordered in the sequence for cations as: K+ < Na+,Mg2+ and for anions as SO42- < CO32- < Cl- < NO3-. These findings show the usefulness of Elastic compliance for structural studies of composite phospholipid bilayers, lipid-protein complexes and lipid systems of reduced dimensionalities.
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11
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Zavitsas AA. Quest To Demystify Water: Ideal Solution Behaviors Are Obtained by Adhering to the Equilibrium Mass Action Law. J Phys Chem B 2019; 123:869-883. [DOI: 10.1021/acs.jpcb.8b07166] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andreas A. Zavitsas
- Department of Chemistry and Biochemistry, Long Island University, 1 University Plaza, Brooklyn, New York 11201, United States
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12
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Tamagawa H, Ikeda K. Another interpretation of the Goldman-Hodgkin-Katz equation based on Ling's adsorption theory. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2018; 47:869-879. [PMID: 30203188 DOI: 10.1007/s00249-018-1332-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/18/2018] [Accepted: 08/27/2018] [Indexed: 10/28/2022]
Abstract
According to standard membrane theory, the generation of membrane potential is attributed to transmembrane ion transport. However, there have been a number of reports of membrane behavior in conflict with the membrane theory of cellular potential. Putting aside the membrane theory, we scrutinized the generation mechanism of membrane potential from the view of the long-dismissed adsorption theory of Ling. Ling's adsorption theory attributes the membrane potential generation to mobile ion adsorption. Although Ling's adsorption theory conflicts with the broadly accepted membrane theory, we found that it well reproduces experimentally observed membrane potential behavior. Our theoretical analysis finds that the potential formula based on the GHK eq., which is a fundamental concept of membrane theory, coincides with the potential formula based on Ling's adsorption theory. Reinterpreting the permeability coefficient in the GHK eq. as the association constant between the mobile ion and adsorption site, the GHK eq. turns into the potential formula from Ling's adsorption theory. We conclude that the membrane potential is generated by ion adsorption as Ling's adsorption theory states and that the membrane theory of cellular potential should be amended even if not discarded.
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Affiliation(s)
- Hirohisa Tamagawa
- Department of Mechanical Engineering, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, Gifu, 501-1193, Japan.
| | - Kota Ikeda
- Graduate School of Advanced Mathematical Sciences, Meiji University, 4-21-1, Nakano, Nakano-ku, Tokyo, 165-8525, Japan
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13
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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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14
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Pollard TP, Beck TL. Re-examining the tetraphenyl-arsonium/tetraphenyl-borate (TATB) hypothesis for single-ion solvation free energies. J Chem Phys 2018; 148:222830. [DOI: 10.1063/1.5024209] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Travis P. Pollard
- Electrochemistry Branch, US Army Research Laboratory, Adelphi, Maryland 20852, USA
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Thomas L. Beck
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, USA
- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
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15
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Xu C, Yin X, Zhang C, Chen H, Huang H, Hu Y. Improving Catalytic Performance of Burkholderiacepacia Lipase by Chemical Modification with Functional Ionic Liquids. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-7246-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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16
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Besford QA, Christofferson AJ, Liu M, Yarovsky I. Long-range dipolar order and dispersion forces in polar liquids. J Chem Phys 2017; 147:194503. [DOI: 10.1063/1.5005581] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
| | | | - Maoyuan Liu
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
| | - Irene Yarovsky
- School of Engineering, RMIT University, Victoria 3001, Australia
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17
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Ion specific hydration in nano-confined electrical double layers. J Colloid Interface Sci 2017; 506:263-270. [DOI: 10.1016/j.jcis.2017.07.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/11/2017] [Accepted: 07/13/2017] [Indexed: 11/15/2022]
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18
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Mazzini V, Craig VSJ. What is the fundamental ion-specific series for anions and cations? Ion specificity in standard partial molar volumes of electrolytes and electrostriction in water and non-aqueous solvents. Chem Sci 2017; 8:7052-7065. [PMID: 29147533 PMCID: PMC5637464 DOI: 10.1039/c7sc02691a] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/19/2017] [Indexed: 11/21/2022] Open
Abstract
The importance of electrolyte solutions cannot be overstated. Beyond the ionic strength of electrolyte solutions the specific nature of the ions present is vital in controlling a host of properties. Therefore ion specificity is fundamentally important in physical chemistry, engineering and biology. The observation that the strengths of the effect of ions often follows well established series suggests that a single predictive and quantitative description of specific-ion effects covering a wide range of systems is possible. Such a theory would revolutionise applications of physical chemistry from polymer precipitation to drug design. Current approaches to understanding specific-ion effects involve consideration of the ions themselves, the solvent and relevant interfaces and the interactions between them. Here we investigate the specific-ion effects trends of standard partial molar volumes and electrostrictive volumes of electrolytes in water and eleven non-aqueous solvents. We choose these measures as they relate to bulk properties at infinite dilution, therefore they are the simplest electrolyte systems. This is done to test the hypothesis that the ions alone exhibit a specific-ion effect series that is independent of the solvent and unrelated to surface properties. The specific-ion effects trends of standard partial molar volumes and normalised electrostrictive volumes examined in this work show a fundamental ion-specific series that is reproduced across the solvents, which is the Hofmeister series for anions and the reverse lyotropic series for cations, supporting the hypothesis. This outcome is important in demonstrating that ion specificity is observed at infinite dilution and demonstrates that the complexity observed in the manifestation of specific-ion effects in a very wide range of systems is due to perturbations of solvent, surfaces and concentration on the underlying fundamental series. This knowledge will guide a general understanding of specific-ion effects and assist in the development of a quantitative predictive theory of ion specificity.
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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 .
| | - 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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19
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Ringe S, Oberhofer H, Reuter K. Transferable ionic parameters for first-principles Poisson-Boltzmann solvation calculations: Neutral solutes in aqueous monovalent salt solutions. J Chem Phys 2017; 146:134103. [DOI: 10.1063/1.4978850] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Stefan Ringe
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Harald Oberhofer
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
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Ninham BW, Larsson K, Lo Nostro P. Two sides of the coin. Part 1. Lipid and surfactant self-assembly revisited. Colloids Surf B Biointerfaces 2017; 152:326-338. [PMID: 28131093 DOI: 10.1016/j.colsurfb.2017.01.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/12/2017] [Accepted: 01/13/2017] [Indexed: 01/22/2023]
Abstract
Hofmeister, specific ion effects, hydration and van der Waals forces at and between interfaces are factors that determine curvature and microstructure in self assembled aggregates of surfactants and lipids; and in microemulsions. Lipid and surfactant head group interactions and between aggregates vary enormously and are highly specific. They act on the hydrophilic side of a bilayer, micelle or other self assembled aggregate. It is only over the last three decades that the origin of Hofmeister effects has become generally understood. Knowledge of their systematics now provides much flexibility in designing nanostructured fluids. The other side of the coin involves equally specific forces. These (opposing) forces work on the hydrophobic side of amphiphilic interfaces. They are due to the interaction of hydrocarbons and other "oils" with hydrophobic tails of surfactants and lipids. The specificity of oleophilic solutes in microemulsions and lipid membranes provides a counterpoint to Hofmeister effects and hydration. Together with global packing constraints these effects determine microstructure. Another factor that has hardly been recognised is the role of dissolved gas. This introduces further, qualitative changes in forces that prescribe microstructure. The systematics of these effects and their interplay are elucidated. Awareness of these competing factors facilitates formulation of self assembled nanostructured fluids. New and predictable geometries that emerge naturally provide insights into a variety of biological phenomena like anaesthetic and pheromone action and transmission of the nervous impulse (see Part 2).
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Affiliation(s)
- Barry W Ninham
- Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia; Department of Chemistry "Ugo Schiff", University of Florence, 50019 Sesto Fiorentino, Firenze, Italy
| | - Kåre Larsson
- Camurus Lipid Research Foundation,Ideon Science Park, 22370, Lund, Sweden
| | - Pierandrea Lo Nostro
- Department of Chemistry "Ugo Schiff", University of Florence, 50019 Sesto Fiorentino, Firenze, Italy; Fondazione Prof. Enzo Ferroni-Onlus, 50019 Sesto Fiorentino, Firenze, Italy.
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21
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Bowron DT, Edler KJ. Decyltrimethylammonium Bromide Micelles in Acidic Solutions: Counterion Binding, Water Structuring, and Micelle Shape. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:262-271. [PMID: 27936323 DOI: 10.1021/acs.langmuir.6b03880] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Wide-angle neutron scattering experiments combined with empirical potential structural refinement modeling have been used to study the detailed structure of decyltrimethylammonium bromide micelles in the presence of acid solutions of HCl or HBr. These experiments demonstrate considerable variation in micelle structure and water structuring between micelles in the two acid solutions and in comparison with the same micelles in pure water. In the presence of the acids, the micelles are smaller; however, in the presence of HCl the micelles are more loosely structured and disordered while in the presence of HBr the micelles are more compact and closer to spherical. Bromide ions bind strongly to the micelle surface in the HBr solution, while in HCl solutions, ion binding to the micelle is similar to that found in pure water. The hydration numbers of the anions and extent of counterion binding follow the predictions of the Hofmeister series for these species.
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Affiliation(s)
- Daniel T Bowron
- ISIS Pulsed Neutron and Muon Source, Science and Technology Facilities Council Rutherford Appleton Laboratory, Harwell Oxford , Didcot OX11 0QX, U.K
| | - Karen J Edler
- Department of Chemistry, University of Bath , Claverton Down, Bath BA2 7AY, U.K
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22
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Yurchenko SO, Shkirin AV, Ninham BW, Sychev AA, Babenko VA, Penkov NV, Kryuchkov NP, Bunkin NF. Ion-Specific and Thermal Effects in the Stabilization of the Gas Nanobubble Phase in Bulk Aqueous Electrolyte Solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11245-11255. [PMID: 27350310 DOI: 10.1021/acs.langmuir.6b01644] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ion-stabilized nanobubbles in bulk aqueous solutions of various electrolytes were investigated. To understand the ion-specific mechanism of nanobubble stabilization, an approach based on the Poisson--Boltzmann equation at the nanobubble interface and in the near-surface layer was developed. It has been shown that the stabilization of nanobubbles is realized by the adsorption of chaotropic anions at the interface, whereas the influence of cosmotropic cations is weak. With increasing temperature, it should be accounted for by blurring the interface due to thermal fluctuations. As a result, the adsorbed state of ions becomes unstable: the nanobubble loses its stability and vanishes. This prediction was proven in our experiments. It turned out that in the case of liquid samples being kept in hermetically sealed ampules, where the phase equilibrium at the liquid-gas interface is fulfilled for any temperature, the volume number density of nanobubbles decreases with increasing temperature and this decrease is irreversible.
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Affiliation(s)
- Stanislav O Yurchenko
- Bauman Moscow State Technical University , Second Baumanskaya str. 5, Moscow, 105005 Russia
| | - Alexey V Shkirin
- A. M. Prokhorov General Physics Institute, Russian Academy of Sciences , Moscow, ul. Vavilova 38, 119991 Russia
- National Research Nuclear University MEPhI , Kashirskoe sh. 31, Moscow, 115409 Russia
| | - Barry W Ninham
- The Australian National University , Acton ACT 2601, Australia
| | - Andrey A Sychev
- Bauman Moscow State Technical University , Second Baumanskaya str. 5, Moscow, 105005 Russia
- P. N. Lebedev Physical Institute, Russian Academy of Sciences , Leninskiy prospekt 53, Moscow, 119991 Russia
| | - Vladimir A Babenko
- P. N. Lebedev Physical Institute, Russian Academy of Sciences , Leninskiy prospekt 53, Moscow, 119991 Russia
| | - Nikita V Penkov
- Institute of Cell Biophysics, Russian Academy of Sciences , Institutskaya ul. 3, Pushchino, Moscow Region, 142290 Russia
| | - Nikita P Kryuchkov
- Bauman Moscow State Technical University , Second Baumanskaya str. 5, Moscow, 105005 Russia
| | - Nikolai F Bunkin
- Bauman Moscow State Technical University , Second Baumanskaya str. 5, Moscow, 105005 Russia
- A. M. Prokhorov General Physics Institute, Russian Academy of Sciences , Moscow, ul. Vavilova 38, 119991 Russia
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23
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24
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Jankowski A, Jankowski A, Kluczyk A, Szemik-Hojniak A. Effect of neutral salts on the excited state proton transfer in the fluorescent probe anchored to the uncharged micelles. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Some physicochemical aspects of water-soluble mineral flotation. Adv Colloid Interface Sci 2016; 235:190-200. [PMID: 27346329 DOI: 10.1016/j.cis.2016.06.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/19/2016] [Accepted: 06/06/2016] [Indexed: 11/22/2022]
Abstract
Some physicochemical aspects of water-soluble mineral flotation including hydration phenomena, associations and interactions between collectors, air bubbles, and water-soluble mineral particles are presented. Flotation carried out in saturated salt solutions, and a wide range of collector concentrations for effective flotation of different salts are two basic aspects of water-soluble mineral flotation. Hydration of salt ions, mineral particle surfaces, collector molecules or ions, and collector aggregates play an important role in water-soluble mineral flotation. The adsorption of collectors onto bubble surfaces is suggested to be the precondition for the association of mineral particles with bubbles. The association of collectors with water-soluble minerals is a complicated process, which may include the adsorption of collector molecules or ions onto such surfaces, and/or the attachment of collector precipitates or crystals onto the mineral surfaces. The interactions between the collectors and the minerals include electrostatic and hydrophobic interactions, hydrogen bonding, and specific interactions, with electrostatic and hydrophobic interactions being the common mechanisms. For the association of ionic collectors with minerals with an opposite charge, electrostatic and hydrophobic interactions could have a synergistic effect, with the hydrophobic interactions between the hydrophobic groups of the previously associated collectors and the hydrophobic groups of oncoming collectors being an important attractive force. Association between solid particles and air bubbles is the key to froth flotation, which is affected by hydrophobicity of the mineral particle surfaces, surface charges of mineral particles and bubbles, mineral particle size and shape, temperature, bubble size, etc. The use of a collector together with a frother and the use of mixed surfactants as collectors are suggested to improve flotation.
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26
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27
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Bergonzi I, Mercury L, Simon P, Jamme F, Shmulovich K. Oversolubility in the microvicinity of solid-solution interfaces. Phys Chem Chem Phys 2016; 18:14874-85. [PMID: 27191014 DOI: 10.1039/c5cp08012f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water-solid interactions at the macroscopic level (beyond tens of nanometers) are often viewed as the coexistence of two bulk phases with a sharp interface in many areas spanning from biology to (geo)chemistry and various technological fields (membranes, microfluidics, coatings, etc.). Here we present experimental evidence indicating that such a view may be a significant oversimplification. High-resolution infrared and Raman experiments were performed in a 60 × 20 μm(2) quartz cavity, synthetically created and initially filled with demineralized water. The IR mapping (3 × 3 μm(2) beam size) performed using the SOLEIL synchrotron radiation source displays two important features: (i) the presence of a dangling free-OH component, a signature of hydrophobic inner walls; (ii) a shift of the OH-stretching band which essentially makes the 3200 cm(-1) sub-band predominate over the usual main component at around 3400 cm(-1). Raman maps confirmed these signatures (though less marked than IR's) and afforded a refined spatial distribution of this interfacial signal. This spatial resolution, statistically treated, results in a puzzling image of a 1-3 μm thick marked-liquid layer along the entire liquid-solid interface. The common view is then challenged by this strong evidence that a μm-thick layer analogous to an interphase forms at the solid-liquid interface. The thermodynamic counterpart of the vibrational shifts amounts to around +1 kJ mol(-1) at the interface with a rapidly decreasing signature towards the cavity centre, meaning that vicinal water may form a reactive layer, of micrometer thickness, expected to have an elevated melting point, a depressed boiling temperature, and enhanced solvent properties.
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Affiliation(s)
- Isabelle Bergonzi
- Institut des Sciences de la Terre d'Orléans, UMR 7327 Université d'Orléans/CNRS/BRGM, 45071 Orléans Cedex, France.
| | - Lionel Mercury
- Institut des Sciences de la Terre d'Orléans, UMR 7327 Université d'Orléans/CNRS/BRGM, 45071 Orléans Cedex, France.
| | - Patrick Simon
- CNRS, CEMHTI UPR3079, Université d'Orléans, CS 90055, 45071 Orleans Cedex 2, France
| | - Frédéric Jamme
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP 489, 91192 Gif-sur-Yvette, France
| | - Kirill Shmulovich
- Institute of Experimental Mineralogy, Russian Academy of Science, 142432 Chernogolovka, Russia
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30
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Ions interacting in solution: Moving from intrinsic to collective properties. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.05.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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32
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Pasquini L, Di Vona ML, Knauth P. Effects of anion substitution on hydration, ionic conductivity and mechanical properties of anion-exchange membranes. NEW J CHEM 2016. [DOI: 10.1039/c5nj03212a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic conductivity and the mechanical properties of ionomers with various anions.
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Affiliation(s)
- L. Pasquini
- Aix Marseille Université (AMU)
- CNRS
- F-13397 Marseille
- France
- Università di Roma Tor Vergata (URoma2)
| | - M. L. Di Vona
- Università di Roma Tor Vergata (URoma2)
- Dipartimento di Ingegneria Industriale
- I-00133 Roma
- Italy
- International Associated Laboratory (L.I.A.): Ionomer Materials for Energy (AMU, URoma2, CNRS)
| | - P. Knauth
- Aix Marseille Université (AMU)
- CNRS
- F-13397 Marseille
- France
- International Associated Laboratory (L.I.A.): Ionomer Materials for Energy (AMU, URoma2, CNRS)
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33
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Moghaddam SZ, Thormann E. Hofmeister effect on thermo-responsive poly(propylene oxide): Role of polymer molecular weight and concentration. J Colloid Interface Sci 2015; 465:67-75. [PMID: 26641567 DOI: 10.1016/j.jcis.2015.11.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
Abstract
Although a vast amount of research has been dedicated to investigate the Hofmeister effect on the stability of polymer solutions, a clear understanding of the role of polymer properties in this phenomenon is still missing. Here, the Hofmeister effect of NaCl (destabilizing) and NaSCN (stabilizing) salts on aqueous solutions of poly(propylene oxide) (PPO) is studied. Four different molecular weights of PPO were investigated, to determine how the variation in the polymer coil size affects the Hofmeister effect. The investigation was further conducted for different PPO concentrations, in order to understand the effect of inter-chain interactions on the response to addition of salt. The temperature-driven phase separation of the solutions was monitored by differential scanning calorimetry, which provides the precise value of the phase separation temperature, as well as the enthalpy change accompanied with the transition. It was observed that increasing the molecular weight weakens the effect of the both salts, which is interpreted in terms of a scaling law between the molecular weight and the accessible surface area of the polymers. Increasing the PPO concentration further diminished the NaCl effect, but amplified the NaSCN effect. This difference is attributed to an electrostatic stabilization mechanism in the case of NaSCN.
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Affiliation(s)
| | - Esben Thormann
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
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34
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TIAN RUI, YANG GANG, LIU XINMIN, HUANG CHENGZHI, GAO XIAODAN, LI HANG. Observation of the Unusual Aggregation Kinetics of Colloidal Minerals in Acidic Solutions. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0872-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Duignan TT, Parsons DF, Ninham BW. Hydronium and hydroxide at the air–water interface with a continuum solvent model. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.06.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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36
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Ridings C, Andersson GG. Change of Surface Structure upon Foam Film Formation. Chemphyschem 2015; 16:733-8. [DOI: 10.1002/cphc.201402821] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Indexed: 11/09/2022]
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37
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Przybyło M, Drabik D, Łukawski M, Langner M. Effect of Monovalent Anions on Water Transmembrane Transport. J Phys Chem B 2014; 118:11470-9. [DOI: 10.1021/jp505687d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Magda Przybyło
- Laboratory for Biophysics of Macromolecular Aggregates,
Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, Pl. Grunwaldzki 13, 50-370 Wroclaw, Poland
| | - Dominik Drabik
- Laboratory for Biophysics of Macromolecular Aggregates,
Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, Pl. Grunwaldzki 13, 50-370 Wroclaw, Poland
| | - Maciej Łukawski
- Laboratory for Biophysics of Macromolecular Aggregates,
Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, Pl. Grunwaldzki 13, 50-370 Wroclaw, Poland
| | - Marek Langner
- Laboratory for Biophysics of Macromolecular Aggregates,
Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, Pl. Grunwaldzki 13, 50-370 Wroclaw, Poland
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38
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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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39
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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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40
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Duignan TT, Parsons DF, Ninham BW. Collins’s rule, Hofmeister effects and ionic dispersion interactions. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.056] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Andersson G, Ridings C. Ion Scattering Studies of Molecular Structure at Liquid Surfaces with Applications in Industrial and Biological Systems. Chem Rev 2014; 114:8361-87. [DOI: 10.1021/cr400417f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Gunther Andersson
- Centre
for NanoScale Science
and Technology, Flinders University, Adelaide, South Australia 5001, Australia
| | - Christiaan Ridings
- Centre
for NanoScale Science
and Technology, Flinders University, Adelaide, South Australia 5001, Australia
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42
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Improving the catalytic performance of porcine pancreatic lipase in the presence of [MMIm][MeSO4] with the modification of functional ionic liquids. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.01.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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43
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Tian R, Yang G, Li H, Gao X, Liu X, Zhu H, Tang Y. Activation energies of colloidal particle aggregation: towards a quantitative characterization of specific ion effects. Phys Chem Chem Phys 2014; 16:8828-36. [DOI: 10.1039/c3cp54813a] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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44
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Jia R, Hu Y, Liu L, Jiang L, Zou B, Huang H. Enhancing Catalytic Performance of Porcine Pancreatic Lipase by Covalent Modification Using Functional Ionic Liquids. ACS Catal 2013. [DOI: 10.1021/cs400404f] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ru Jia
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Biotechnology and Pharmaceutical
Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - Yi Hu
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Biotechnology and Pharmaceutical
Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - Luo Liu
- Beijing Key Laboratory of Bioprocess,
College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ling Jiang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Biotechnology and Pharmaceutical
Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - Bin Zou
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Biotechnology and Pharmaceutical
Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - He Huang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Biotechnology and Pharmaceutical
Engineering, Nanjing University of Technology, Nanjing 210009, China
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45
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Duignan TT, Parsons DF, Ninham BW. A continuum model of solvation energies including electrostatic, dispersion, and cavity contributions. J Phys Chem B 2013; 117:9421-9. [PMID: 23837915 DOI: 10.1021/jp403596c] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Physically accurate continuum solvent models that can calculate solvation energies are crucial to explain and predict the behavior of solute particles in water. Here, we present such a model applied to small spherical ions and neutral atoms. It improves upon a basic Born electrostatic model by including a standard cavity energy and adding a dispersion component, consistent with the Born electrostatic energy and using the same cavity size parameter. We show that the well-known, puzzling differences between the solvation energies of ions of the same size is attributable to the neglected dispersion contribution. This depends on dynamic polarizability as well as size. Generally, a large cancellation exists between the cavity and dispersion contributions. This explains the surprising success of the Born model. The model accurately reproduces the solvation energies of the alkali halide ions, as well as the silver(I) and copper(I) ions with an error of 12 kJ mol(-1) (±3%). The solvation energy of the noble gases is also reproduced with an error of 2.6 kJ mol(-1) (±30%). No arbitrary fitting parameters are needed to achieve this. This model significantly improves our understanding of ionic solvation and forms a solid basis for the investigation of other ion-specific effects using a continuum solvent model.
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Affiliation(s)
- Timothy T Duignan
- Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia
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46
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Mehlhorn M, Schnur S, Groß A, Morgenstern K. Molecular-Scale Imaging of Water Near Charged Surfaces. ChemElectroChem 2013. [DOI: 10.1002/celc.201300063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Shagieva FM, Boinovich LB. The effects of halide anions on the dielectric response of potassium halide solutions in visible, UV and far UV region. J Chem Phys 2013; 138:214502. [DOI: 10.1063/1.4807856] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Kilpatrick JI, Loh SH, Jarvis SP. Directly Probing the Effects of Ions on Hydration Forces at Interfaces. J Am Chem Soc 2013; 135:2628-34. [DOI: 10.1021/ja310255s] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jason I. Kilpatrick
- Conway Institute of Biomolecular
and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Siu-Hong Loh
- Conway Institute of Biomolecular
and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Suzanne P. Jarvis
- Conway Institute of Biomolecular
and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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49
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Cugia F, Monduzzi M, Ninham BW, Salis A. Interplay of ion specificity, pH and buffers: insights from electrophoretic mobility and pH measurements of lysozyme solutions. RSC Adv 2013. [DOI: 10.1039/c3ra00063j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Jia R, Hu Y, Liu L, Jiang L, Huang H. Chemical modification for improving activity and stability of lipase B from Candida antarctica with imidazolium-functional ionic liquids. Org Biomol Chem 2013; 11:7192-8. [DOI: 10.1039/c3ob41076e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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