151
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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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152
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Phosphate uptake studies of cross-linked chitosan bead materials. J Colloid Interface Sci 2017; 485:201-212. [DOI: 10.1016/j.jcis.2016.09.031] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/13/2016] [Accepted: 09/14/2016] [Indexed: 11/21/2022]
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153
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Liu L, Kou R, Liu G. Ion specificities of artificial macromolecules. SOFT MATTER 2016; 13:68-80. [PMID: 27906410 DOI: 10.1039/c6sm01773h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Artificial macromolecules are well-defined synthetic polymers, with a relatively simple structure as compared to naturally occurring macromolecules. This review focuses on the ion specificities of artifical macromolecules. Ion specificities are influenced by solvent-mediated indirect ion-macromolecule interactions and also by direct ion-macromolecule interactions. In aqueous solutions, the role of water-mediated indirect ion-macromolecule interactions will be discussed. The addition of organic solvents to aqueous solutions significantly changes the ion specificities due to the formation of water-organic solvent complexes. For direct ion-macromolecule interactions, we will discuss specific ion-pairing interactions for charged macromolecules and specific ion-neutral site interactions for uncharged macromolecules. When the medium conditions change from dilute solutions to crowded environments, the ion specificities can be modified by either the volume exclusion effect, the variation of dielectric constant, or the interactions between ions, macromolecules, and crowding agents.
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Affiliation(s)
- Lvdan Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
| | - Ran Kou
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
| | - Guangming Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. China 230026.
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154
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Zhao L, Pan L, Cao Z, Wang Q. Mutual Effects of Glycerol and Inorganic Salts on Their Hydration Abilities. J Phys Chem B 2016; 120:13112-13117. [DOI: 10.1021/acs.jpcb.6b08778] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lishan Zhao
- Department
of Physics, University of Science and Technology Beijing, Beijing 100083, China
- Institute
of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Liqing Pan
- Department
of Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Zexian Cao
- Institute
of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Qiang Wang
- Institute
of Physics, Chinese Academy of Sciences, Beijing 100190, China
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155
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Akpinar E, Turkmen M, Canioz C, Martins Figueiredo Neto A. Role of kosmotrope-chaotrope interactions at micelle surfaces on the stabilization of lyotropic nematic phases. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2016; 39:107. [PMID: 27837348 DOI: 10.1140/epje/i2016-16107-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/26/2016] [Indexed: 06/06/2023]
Abstract
Three lyotropic quaternary systems of ionic surfactants were prepared to investigate the role of kosmotrope-chaotrope interactions at the micelle surfaces on stabilizing the different nematic phases. The ionic surfactants were potassium laurate (KL), sodium dodecylsulfate (SDS) and tetradecyltrimethylammonium bromide (TDTMABr), where KL is a kosmotrope surfactant, and others are chaotrope. The first system consisted of KL/decanol (DeOH)/water/alkali sulfate and the second of SDS/DeOH/water/alkali sulfate. The third system was prepared by adding sodium salts of chaotropic or kosmotropic anions to the primary mixture of TDTMABr/DeOH/water, separately. The characteristic textures of discotic nematic (N D), biaxial nematic (N B) and calamitic nematic (N C) phases were identified under polarizing light microscope. Laser conoscopy was employed to determine the uniaxial-to-biaxial phase transitions. The kosmotrope-kosmotrope or chaotrope-chaotrope interactions between the head groups of the surfactants and the ions of the electrolytes led to the stabilization of the N D phase. On the other hand, kosmotrope-chaotrope interactions stabilize the N B and/or N C phases.
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Affiliation(s)
- Erol Akpinar
- Arts and Sciences Faculty, Department of Chemistry, Abant Izzet Baysal University, Golkoy, 14030, Bolu, Turkey.
| | - Meric Turkmen
- Arts and Sciences Faculty, Department of Chemistry, Abant Izzet Baysal University, Golkoy, 14030, Bolu, Turkey
| | - Cihan Canioz
- Arts and Sciences Faculty, Department of Chemistry, Abant Izzet Baysal University, Golkoy, 14030, Bolu, Turkey
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156
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Du H, Liu Z, Jennings R, Qian X. The effects of salt ions on the dynamics and thermodynamics of lysozyme unfolding. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1229336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hongbo Du
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Zizhao Liu
- Department of Chemical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Renee Jennings
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Xianghong Qian
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas, USA
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157
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Polyelectrolyte behavior of copolymers of 2-deoxy-2-methacrylamido- d -glucose with cationic comonomers in water and dimethylsulfoxide solutions. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.07.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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158
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Hydrotrope-Induced Enhancement of Room Temperature Surface Activity for High Krafft Point Fluorinated Surfactants. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1880-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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159
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Hao LS, Yang N, Xu GY, Jia YF, Liu Q, Nan YQ. Specific ion effects on the micellization of aqueous mixed cationic/anionic surfactant systems with various counterions. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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160
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Tuning of Cloud Point by the Nature of Surfactant Headgroup: Influence of Counterion and Additives. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1860-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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161
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Udoetok IA, Wilson LD, Headley JV. Quaternized Cellulose Hydrogels as Sorbent Materials and Pickering Emulsion Stabilizing Agents. MATERIALS 2016; 9:ma9080645. [PMID: 28773767 PMCID: PMC5509095 DOI: 10.3390/ma9080645] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 11/16/2022]
Abstract
Quaternized (QC) and cross-linked/quaternized (CQC) cellulose hydrogels were prepared by cross-linking native cellulose with epichlorohydrin (ECH), with subsequent grafting of glycidyl trimethyl ammonium chloride (GTMAC). Materials characterization via carbon, hydrogen and nitrogen (CHN) analysis, thermogravimetric analysis (TGA), and Fourier transform infrared (FTIR)/13C solid state NMR spectroscopy provided supportive evidence of the hydrogel synthesis. Enhanced thermal stability of the hydrogels was observed relative to native cellulose. Colloidal stability of octanol and water mixtures revealed that QC induces greater stabilization over CQC, as evidenced by the formation of a hexane–water Pickering emulsion system. Equilibrium sorption studies with naphthenates from oil sands process water (OSPW) and 2-naphthoxy acetic acid (NAA) in aqueous solution revealed that CQC possess higher affinity relative to QC with the naphthenates. According to the Langmuir isotherm model, the sorption capacity of CQC for OSPW naphthenates was 33.0 mg/g and NAA was 69.5 mg/g. CQC displays similar affinity for the various OSPW naphthenate component species in aqueous solution. Kinetic uptake of NAA at variable temperature, pH and adsorbent dosage showed that increased temperature favoured the uptake process at 303 K, where Qm = 76.7 mg/g. Solution conditions at pH 3 or 9 had a minor effect on the sorption process, while equilibrium was achieved in a shorter time at lower dosage (ca. three-fold lower) of hydrogel (100 mg vs. 30 mg). The estimated activation parameters are based on temperature dependent rate constants, k1, which reveal contributions from enthalpy-driven electrostatic interactions. The kinetic results indicate an ion-based associative sorption mechanism. This study contributes to a greater understanding of the adsorption and physicochemical properties of cellulose-based hydrogels.
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Affiliation(s)
- Inimfon A Udoetok
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - John V Headley
- Water Science and Technology Directorate, Environment and Climate Change Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada.
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162
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Wei S, Chen M, Wei C, Huang N, Li L. Opposite counter-ion effects on condensed bundles of highly charged supramolecular nanotubes in water. SOFT MATTER 2016; 12:6285-6292. [PMID: 27373802 DOI: 10.1039/c6sm00902f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although ion specificity in aqueous solutions is well known, its manifestation in unconventional strong electrostatic interactions remains implicit. Herein, the ionic effects in dense packing of highly charged polyelectrolytes are investigated in supramolecular nanotube prototypes. Distinctive behaviors of the orthorhombic arrays composed of supramolecular nanotubes in various aqueous solutions were observed by Small Angle X-ray Scattering (SAXS), depending on the counter-ions' size and affiliation to the surface -COO(-) groups. Bigger tetra-alkyl ammonium (TAA(+)) cations weakly bonding to -COO(-) will compress the orthorhombic arrays, while expansion is induced by smaller alkaline metal (M(+)) ions with strong affiliation to -COO(-). Careful analysis of the changes in the SAXS peaks with different counter/co-ion combinations indicates dissimilar mechanisms underlying the two explicit types of ionic effects. The pH measurements are in line with the ion specificity by SAXS and reveal the strong electrostatic character of the system. It is proposed that the small distances between the charged surfaces, in addition to the selective adsorption of counter-ions by the surface charge, bring out the observed distinctive ionic effects. Our results manifest the diverse mechanisms and critical roles of counter-ion effects in strong electrostatic interactions.
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Affiliation(s)
- Shenghui Wei
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, China.
| | - Mingming Chen
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, China.
| | - Chengsha Wei
- Department of Polymer Science and Engineering, CAS Key Lab of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Ningdong Huang
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, China.
| | - Liangbin Li
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, China. and Department of Polymer Science and Engineering, CAS Key Lab of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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163
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Hayyan M, Mbous YP, Looi CY, Wong WF, Hayyan A, Salleh Z, Mohd-Ali O. Natural deep eutectic solvents: cytotoxic profile. SPRINGERPLUS 2016; 5:913. [PMID: 27386357 PMCID: PMC4927554 DOI: 10.1186/s40064-016-2575-9] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 06/15/2016] [Indexed: 01/15/2023]
Abstract
The purpose of this study was to investigate the cytotoxic profiles of different ternary natural deep eutectic solvents (NADESs) containing water. For this purpose, five different NADESs were prepared using choline chloride as a salt, alongside five hydrogen bond donors (HBD) namely glucose, fructose, sucrose, glycerol, and malonic acid. Water was added as a tertiary component during the eutectics preparation, except for the malonic acid-based mixture. Coincidentally, the latter was found to be more toxic than any of the water-based NADESs. A trend was observed between the cellular requirements of cancer cells, the viscosity of the NADESs, and their cytotoxicity. This study also highlights the first time application of the conductor-like screening model for real solvent (COSMO-RS) software for the analysis of the cytotoxic mechanism of NADESs. COSMO-RS simulation of the interactions between NADESs and cellular membranes' phospholipids suggested that NADESs strongly interacted with cell surfaces and that their accumulation and aggregation possibly defined their cytotoxicity. This reinforced the idea that careful selection of NADESs components is necessary, as it becomes evident that organic acids as HBD highly contribute to the increasing toxicity of these neoteric mixtures. Nevertheless, NADESs in general seem to possess relatively less acute toxicity profiles than their DESs parents. This opens the door for future large scale utilization of these mixtures.
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Affiliation(s)
- Maan Hayyan
- />University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- />Department of Civil Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yves Paul Mbous
- />University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- />Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chung Yeng Looi
- />Department of Pharmacology, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Won Fen Wong
- />Department of Medical Microbiology, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Adeeb Hayyan
- />University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- />Institute of Halal Research University of Malaya (IHRUM), Academy of Islamic Studies, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zulhaziman Salleh
- />University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
- />Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ozair Mohd-Ali
- />UiTM Medical Specialist Centre, University of Technology MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia
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164
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Schummel PH, Haag A, Kremer W, Kalbitzer HR, Winter R. Cosolvent and Crowding Effects on the Temperature and Pressure Dependent Conformational Dynamics and Stability of Globular Actin. J Phys Chem B 2016; 120:6575-86. [DOI: 10.1021/acs.jpcb.6b04738] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Paul Hendrik Schummel
- Physical
Chemistry I − Biophysical Chemistry, Faculty of Chemistry and
Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 4a, D-44227 Dortmund, Germany
| | - Andreas Haag
- Institute
of Biophysics and Physical Biochemistry, Centre of Magnetic Resonance
in Chemistry and Biomedicine (CMRCB), University of Regensburg, Universitätsstrasse
31, D-93047 Regensburg, Germany
| | - Werner Kremer
- Institute
of Biophysics and Physical Biochemistry, Centre of Magnetic Resonance
in Chemistry and Biomedicine (CMRCB), University of Regensburg, Universitätsstrasse
31, D-93047 Regensburg, Germany
| | - Hans Robert Kalbitzer
- Institute
of Biophysics and Physical Biochemistry, Centre of Magnetic Resonance
in Chemistry and Biomedicine (CMRCB), University of Regensburg, Universitätsstrasse
31, D-93047 Regensburg, Germany
| | - Roland Winter
- Physical
Chemistry I − Biophysical Chemistry, Faculty of Chemistry and
Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 4a, D-44227 Dortmund, Germany
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165
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Bauer S, Finlay JA, Thomé I, Nolte K, Franco SC, Ralston E, Swain GE, Clare AS, Rosenhahn A. Attachment of Algal Cells to Zwitterionic Self-Assembled Monolayers Comprised of Different Anionic Compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5663-5671. [PMID: 27182766 DOI: 10.1021/acs.langmuir.6b00839] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The influence of zwitterionic self-assembled monolayers on settlement and removal of algae was studied. The monolayers were constructed either from zwitterionic thiols or from solutions of positively and negatively charged thiols. The cationic component was composed of quaternary ammonium terminated thiols and the anionic component contained sulfate or carboxylate termination. During assembly, all surfaces showed a strong tendency for equilibration of the surface charge. Settlement and adhesion assays with zoospores of Ulva linza and the diatom Navicula incerta, and field tests of the initial surface colonization revealed the relevance of charge equilibration for the biological inertness of the prepared surfaces.
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Affiliation(s)
- S Bauer
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
| | - J A Finlay
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - I Thomé
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
| | - K Nolte
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
| | - S C Franco
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - E Ralston
- Center of Corrosion and Biofouling Control, Florida Institute of Technology , Melbourne, Florida 32901, United States
| | - G E Swain
- Center of Corrosion and Biofouling Control, Florida Institute of Technology , Melbourne, Florida 32901, United States
| | - A S Clare
- School of Marine Science and Technology, Newcastle University , Newcastle upon Tyne NE1 7RU, United Kingdom
| | - A Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr-University Bochum , 44780 Bochum, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
- Applied Physical Chemistry, Ruprecht-Karls-University Heidelberg , 69120 Heidelberg, Germany
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166
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Leontidis E. Chaotropic salts interacting with soft matter: Beyond the lyotropic series. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.06.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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167
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168
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Schwierz N, Horinek D, Sivan U, Netz RR. Reversed Hofmeister series—The rule rather than the exception. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.04.003] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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169
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Gaisinskaya-Kipnis A, Ma L, Kampf N, Klein J. Frictional Dissipation Pathways Mediated by Hydrated Alkali Metal Ions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4755-4764. [PMID: 27089022 DOI: 10.1021/acs.langmuir.6b00707] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Frictional energy dissipation between sliding solid surfaces in aqueous media may proceed by different pathways. Using a surface force balance (SFB), we have examined systematically how such dissipation is mediated by the series of hydrated cations M(+) = Li(+), Na(+), and K(+) that are trapped between two atomically smooth, negatively charged, mica surfaces sliding across the ionic solutions over many orders of magnitude loading. By working at local contact pressures up to ca. 30 MPa (∼300 atm), up to 2 orders of magnitude higher than earlier studies, we could show that the frictional dissipation at constant sliding velocity, represented by the coefficient of sliding friction μM+, decreased as μLi+ > μNa+ ≳ μK+. This result contrasts with the expectation (in conceptual analogy with the Hofmeister series) that the lubrication would improve with the extent of ionic hydration, since that would have led to the opposite μM+ sequence. It suggests, rather, that frictional forces, even in such simple systems, can be dominated by rate-activated pathways where the size of the hydration shell becomes a dissipative liability, rather than by the hydration-shell dissipation expected via the hydration lubrication mechanism.
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Affiliation(s)
| | - Liran Ma
- Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100, Israel
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Nir Kampf
- Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100, Israel
| | - Jacob Klein
- Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100, Israel
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170
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Brocca P, Rondelli V, Mallamace F, Di Bari MT, Deriu A, Lohstroh W, Del Favero E, Corti M, Cantu' L. Water response to ganglioside GM1 surface remodelling. Biochim Biophys Acta Gen Subj 2016; 1861:3573-3580. [PMID: 27155581 DOI: 10.1016/j.bbagen.2016.04.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/20/2016] [Accepted: 04/27/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND Gangliosides are biological glycolipids participating in rafts, structural and functional domains of cell membranes. Their headgroups are able to assume different conformations when packed on the surface of an aggregate, more lying or standing. Switching between different conformations is possible, and is a collective event. Switching can be induced, in model systems, by concentration or temperature increase, then possibly involving ganglioside-water interaction. In the present paper, the effect of GM1 ganglioside headgroup conformation on the water structuring and interactions is addressed. METHODS Depolarized Rayleigh Scattering, Raman Scattering, Quasielastic Neutron Scattering and NMR measurements were performed on GM1 ganglioside solutions, focusing on solvent properties. RESULTS All used techniques agree in evidencing differences in the structure and dynamics of solvent water on different time-and-length scales in the presence of either GM1 headgroup conformations. CONCLUSIONS In general, all results indicate that both the structural properties of solvent water and its interactions with the sugar headgroups of GM1 respond to surface remodelling. The extent of this modification is much higher than expected and, interestingly, ganglioside headgroups seem to turn from cosmotropes to chaotropes upon collective rearrangement from the standing- to the lying-conformation. SIGNIFICANCE In a biological perspective, water structure modulation could be one of the physico-chemical elements contributing to the raft strategy, both for rafts formation and persistence and for their functional aspects. In particular, the interaction with approaching bodies could be favoured or inhibited or triggered by complex-sugar-sequence conformational switch. This article is part of a Special Issue entitled "Science for Life" Guest Editor: Dr. Austen Angell, Dr. Salvatore Magazù and Dr. Federica Migliardo.
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Affiliation(s)
- P Brocca
- Dept. of Medical Biotechnologies and Traslational Medicine, University of Milano, LITA, Via Fratelli Cervi, 93, 20090 Segrate, Italy
| | - V Rondelli
- Dept. of Medical Biotechnologies and Traslational Medicine, University of Milano, LITA, Via Fratelli Cervi, 93, 20090 Segrate, Italy
| | - F Mallamace
- Dept. of Physics and Earth Sciences, University of Messina, Viale F. Stagno D'Alcontres, 31, 98166 Messina, Italy
| | - M T Di Bari
- Dept. of Physics and Earth Sciences, University of Parma, Parco Area delle Scienze, 7/A, 43124 Parma, Italy
| | - A Deriu
- Dept. of Physics and Earth Sciences, University of Parma, Parco Area delle Scienze, 7/A, 43124 Parma, Italy
| | - W Lohstroh
- Heinz Maier-Leibnitz Zentrum, Technische Universität München, Lichtenbergstraße 1, Garching, Germany
| | - E Del Favero
- Dept. of Medical Biotechnologies and Traslational Medicine, University of Milano, LITA, Via Fratelli Cervi, 93, 20090 Segrate, Italy
| | - M Corti
- Dept. of Medical Biotechnologies and Traslational Medicine, University of Milano, LITA, Via Fratelli Cervi, 93, 20090 Segrate, Italy
| | - L Cantu'
- Dept. of Medical Biotechnologies and Traslational Medicine, University of Milano, LITA, Via Fratelli Cervi, 93, 20090 Segrate, Italy
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171
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Lutz-Bueno V, Pasquino R, Liebi M, Kohlbrecher J, Fischer P. Viscoelasticity Enhancement of Surfactant Solutions Depends on Molecular Conformation: Influence of Surfactant Headgroup Structure and Its Counterion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4239-4250. [PMID: 27081871 DOI: 10.1021/acs.langmuir.6b00776] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
During the anisotropic growth from globular to wormlike micelles, the basic interactions among distinct parts of the surfactant monomer, its counterion, and additives are fundamental to tune molecular self-assembly. We investigate the addition of sodium salicylate (NaSal) to hexadecyltrimethylammonium chloride and bromide (CTAC and CTAB), 1-hexadecylpyridinium chloride and bromide (CPyCl and CPyBr), and benzyldimethylhexadecylammonium chloride (BDMC), which have the same hydrophobic tail. Their potential to enhance viscoelasticity by anisotropic micellar growth upon salt addition was compared in terms of (i) the influence of the headgroup structure, and (ii) the influence of surfactant counterion type. Employing proton nuclear magnetic resonance ((1)H NMR), we focused on the molecular conformation of surfactant monomers in the core and polar shell regions of the micelles and their interactions with increasing concentration of NaSal. The viscoelastic response was investigated by rotational and oscillatory rheology. We show that micellar growth rates can be tuned by varying the flexibility and size of the surfactant headgroup as well as the dissociation degree of the surfactant counterion, which directly influences the strength of headgroup-counterion pairing. As a consequence, the morphological transitions depend directly on charge neutralization by electrostatic screening. For example, the amount of salt necessary to start the rodlike-to-wormlike micelle growth depends directly on the number of dissociated counterions in the polar shell.
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Affiliation(s)
- Viviane Lutz-Bueno
- Institute of Food, Nutrition and Health, ETH Zurich , 8092 Zurich, Switzerland
| | - Rossana Pasquino
- Department of Chemical Engineering, University of Naples Federico II , 80125 Naples, Italy
| | - Marianne Liebi
- Swiss Light Source, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Joachim Kohlbrecher
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zurich , 8092 Zurich, Switzerland
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172
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Wang T, Kou R, Liu H, Liu L, Zhang G, Liu G. Anion Specificity of Polyzwitterionic Brushes with Different Carbon Spacer Lengths and Its Application for Controlling Protein Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2698-707. [PMID: 26927024 DOI: 10.1021/acs.langmuir.6b00293] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Both ion-specific interaction and carbon spacer length have strong effects on the properties of polyzwitterions. In this work, we have investigated the anion specificity of poly(sulfobetaine methacrylamide) (PSBMAm) brushes with different carbon spacer lengths. The effectiveness of anions to enhance the hydration of the PSBMAm brushes increases from kosmotropic to chaotropic anions. The interactions between the anions and the PSBMAm brushes are strongly influenced by carbon spacer length because the strength of inter/intrachain association of the PSBMAm brushes decreases with increasing carbon spacer length. The inter/intrachain association of the PSBMAm brushes with a longer carbon spacer is easier to break by the external anions in the high salt concentration regime. On the other hand, a longer carbon spacer is more favorable for the zwitterionic groups to form cyclic intramolecular structures. As a result, the addition of anions can more effectively enhance the hydration of the PSBMAm brushes with a medium-length carbon spacer compared with that of the PSBMAm brushes with a either shorter or longer carbon spacer in the low salt concentration regime, determined by the balance between the inter/intrachain association and the formation of cyclic intramolecular structures. Our study also demonstrates that both anion identity and carbon spacer length can be used to control protein adsorption on the surface of the PSBMAm brushes.
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Affiliation(s)
- Tao Wang
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 230026 Hefei, P. R. China
| | - Ran Kou
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 230026 Hefei, P. R. China
| | - Huili Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 230026 Hefei, P. R. China
| | - Lvdan Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 230026 Hefei, P. R. China
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering, South China University of Technology , 510640 Guangzhou, P. R. China
| | - Guangming Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , 230026 Hefei, P. R. China
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173
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Durán-Álvarez A, Maldonado-Domínguez M, González-Antonio O, Durán-Valencia C, Romero-Ávila M, Barragán-Aroche F, López-Ramírez S. Experimental-Theoretical Approach to the Adsorption Mechanisms for Anionic, Cationic, and Zwitterionic Surfactants at the Calcite-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2608-2616. [PMID: 26915667 DOI: 10.1021/acs.langmuir.5b04151] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The adsorption of surfactants (DTAB, SDS, and CAPB) at the calcite-water interface was studied through surface zeta potential measurements and multiscale molecular dynamics. The ground-state polarization of surfactants proved to be a key factor for the observed behavior; correlation was found between adsorption and the hard or soft charge distribution of the amphiphile. SDS exhibits a steep aggregation profile, reaching saturation and showing classic ionic-surfactant behavior. In contrast, DTAB and CAPB featured diversified adsorption profiles, suggesting interplay between supramolecular aggregation and desorption from the solid surface and alleviating charge buildup at the carbonate surface when bulk concentration approaches CMC. This manifests as an adsorption profile with a fast initial step, followed by a metastable plateau and finalizing with a sharp decrease and stabilization of surface charge. Suggesting this competition of equilibria, elicited at the CaCO3 surface, this study provides atomistic insight into the adsorption mechanism for ionic surfactants on calcite, which is in accordance with experimental evidence and which is a relevant criterion for developing enhanced oil recovery processes.
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Affiliation(s)
- Agustín Durán-Álvarez
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Ingeniería Química/USIP, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
- Universidad Nacional Autónoma de México , Facultad de Ingeniería, Departamento de Ingeniería Petrolera, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Mauricio Maldonado-Domínguez
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Química Orgánica, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Oscar González-Antonio
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Química Orgánica, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Cecilia Durán-Valencia
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Ingeniería Química/USIP, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Margarita Romero-Ávila
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Química Orgánica, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Fernando Barragán-Aroche
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Ingeniería Química/USIP, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
| | - Simón López-Ramírez
- Universidad Nacional Autónoma de México , Facultad de Química, Departamento de Ingeniería Química/USIP, Ciudad Universitaria, México, Distrito Federal C.P. 04510, México
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174
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Effect of salt counterions on the physicochemical characteristics of novel green surfactant, ethane-1,2-diyl bis(N,N-dimethyl-N-tetradecylammoniumacetoxy) dichloride. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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175
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Bautista F, Tepale N, Fernández VVA, Landázuri G, Hernández E, Macías ER, Soltero JFA, Escalante JI, Manero O, Puig JE. A master dynamic flow diagram for the shear thickening transition in micellar solutions. SOFT MATTER 2016; 12:165-170. [PMID: 26448618 DOI: 10.1039/c5sm01625h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The shear thickening behavior of dilute micellar solutions of hexadecyltrimethylammonium-type surfactants with different counterions (tosylate, 3- and 4-fluorobenzoate, vinylbenzoate and salicylate) and of n-alkyltetradecylammonium bromide (CnTAB), with n = 14, 16 and 18, is examined here. These solutions undergo a shear thickening transition due to the formation of shear-induced structures (SISs) in the shear range studied. Here we report a relationship between the shear thickening intensity and the differences in the hydrophobicity of counterions according to the Hofmeister-like anion series, which leads to a master flow diagram. This master flow diagram is produced by plotting a normalized shear thickening intensity (Iη - 1)/(Imax - 1) versus CD/CD,max, where Iη is the shear-thickening intensity, defined as the largest viscosity obtained in the shear-thickening transition (STT) at a given surfactant concentration CD divided by the Newtonian viscosity η0, and Imax is the largest intensity value obtained in the STT at a surfactant concentration CD,max. The master flow diagram is built using several cetyltrimethylammonium-type surfactants with different counterions, according to a Hofmeister-like series, and by n-alkyltetradecylammonium bromide surfactants with different alkyl chain lengths.
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Affiliation(s)
- F Bautista
- Departamentos de Física, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico
| | - N Tepale
- Departamento de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Ave. San Claudio y 18 Sur, Puebla, Pue. 72000, Mexico
| | - V V A Fernández
- Departamento de Ciencias Tecnológicas, Universidad de Guadalajara, Av. Universidad #1115, Ocotlán, Jal. 47820, Mexico
| | - G Landázuri
- Departamento de Ingeniería Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico.
| | - E Hernández
- Departamento de Ingeniería Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico.
| | - E R Macías
- Departamento de Ingeniería Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico.
| | - J F A Soltero
- Departamento de Ingeniería Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico.
| | - J I Escalante
- Departamento de Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico
| | - O Manero
- Instituto de Investigación en Materiales, Universidad Nacioal Autónoma de Mexico, Apdo. Postal 70-360, Mexico D.F. 04510, Mexico
| | - J E Puig
- Departamento de Ingeniería Química, Universidad de Guadalajara, Boul. M. García Barragán #1451, Guadalajara, Jal. 44430, Mexico.
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176
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Kaur G, Kumar S, Kant R, Bhanjana G, Dilbaghi N, Guru SK, Bhushan S, Jaglan S. One-step synthesis of silver metallosurfactant as an efficient antibacterial and anticancer material. RSC Adv 2016. [DOI: 10.1039/c6ra09677h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A silver based double chained metallosurfactant was synthesized and characterized with various analytical methods. Along with the self aggregation behavior, DNA binding abilities of metallomicelles and antimicrobial and anticancer activities were evaluated.
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Affiliation(s)
- Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh 160 014
- India
| | - Sandeep Kumar
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science & Technology
- Hisar 125 001
- India
| | - Ravi Kant
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science & Technology
- Hisar 125 001
- India
| | - Gaurav Bhanjana
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science & Technology
- Hisar 125 001
- India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology
- Guru Jambheshwar University of Science & Technology
- Hisar 125 001
- India
| | - Santosh Kumar Guru
- Division of Cancer Pharmocolgy
- Indian Institute of Integrative Medicine
- India
| | - Shashi Bhushan
- Division of Cancer Pharmocolgy
- Indian Institute of Integrative Medicine
- India
| | - Sundeep Jaglan
- Quality Control & Quality Assurance Division
- CSIR-Indian Institute of Integrative Medicine
- India
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177
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Wei Y, Wang H, Liu G, Wang Z, Yuan S. A molecular dynamics study on two promising green surfactant micelles of choline dodecyl sulfate and laurate. RSC Adv 2016. [DOI: 10.1039/c6ra16536b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Two green surfactants, made by dodecyl sulfate (DS−) and laurate (C12) with equimolar choline (Ch+) components as counterions, are studied through all-atom molecular dynamics simulations.
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Affiliation(s)
- Yaoyao Wei
- Key Lab of Colloid and Interface Chemistry
- Shandong University
- Jinan 250100
- China
| | - Honglei Wang
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- China
| | - Guokui Liu
- Key Lab of Colloid and Interface Chemistry
- Shandong University
- Jinan 250100
- China
| | - Zhongni Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Shiling Yuan
- Key Lab of Colloid and Interface Chemistry
- Shandong University
- Jinan 250100
- China
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178
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Specific ion effects of chloride vis-à-vis acetate, propionate and butyrate counterions on the cetylpyridinium headgroup at the micelle–solution and air–solution interfaces. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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179
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Experimental investigation and modeling of the performance of pure and mixed surfactant inhibitors: Micellization and corrosion inhibition. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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180
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Hostnik G, Bončina M, Dolce C, Mériguet G, Rollet AL, Cerar J. Influence of counterions on the conformation of conjugated polyelectrolytes: the case of poly(thiophen-3-ylacetic acid). Phys Chem Chem Phys 2016; 18:25036-25047. [DOI: 10.1039/c6cp04193k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Binding of large hydrophobic counterions to poly(thiophen-3-ylacetate) provokes the conformational change of this conjugated polyelectrolyte.
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Affiliation(s)
- Gregor Hostnik
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Matjaž Bončina
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Caterina Dolce
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire PHENIX
- Paris
| | | | | | - Janez Cerar
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
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181
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Study of quantitative interactions of potato and corn starch granules with ions in diluted solutions of heavy metal salts. Carbohydr Polym 2015; 134:102-9. [DOI: 10.1016/j.carbpol.2015.07.041] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 11/18/2022]
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182
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Birkner M, Ulbricht M. Ultrafiltration membranes with markedly different pH- and ion-responsivity by photografted zwitterionic polysulfobetain or polycarbobetain. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.07.046] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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183
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Nan YQ, Xu HM, Yang N, Liu Q, Jia YF, Hao LS. Role of matching water affinities between oppositely charged headgroups in the rheological properties of aqueous mixed cationic/anionic surfactant systems. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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184
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Kou R, Zhang J, Wang T, Liu G. Interactions between Polyelectrolyte Brushes and Hofmeister Ions: Chaotropes versus Kosmotropes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10461-8. [PMID: 26359677 DOI: 10.1021/acs.langmuir.5b02698] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We have investigated the interactions between the positively charged poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] (PMETAC) brushes and the Hofmeister anions and the interactions between the negatively charged poly(3-sulfopropyl methacrylate potassium) (PSPMA) brushes and the Hofmeister cations using a combination of quartz crystal microbalance with dissipation and spectroscopic ellipsometry. A V-shaped anion series is observed in terms of the ion-specific interactions between the PMETAC brushes and the Hofmeister anions. We have found that the chaotropic and kosmotropic anions interact with the PMETAC brushes in different manners. The ion-specific interactions between the PMETAC brushes and the chaotropic anions are dominated by the direct interactions between the anions and the positively charged quaternary ammonium group via ion pairing mediated by ionic hydration strength or polarizability, whereas the ion-specific interactions between the PMETAC brushes and the kosmotropic anions are dominated by the competition for water molecules between the anions and the brushes. The ion-specific interactions between the PMETAC brushes and the anions have significant influences on both the hydration and the conformation of the brushes. The cations exhibit weaker specific ion effects on the PSPMA brushes in comparison with the specific anion effects on the PMETAC brushes.
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Affiliation(s)
- Ran Kou
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, P. R. China 230026
| | - Jian Zhang
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, P. R. China 230026
| | - Tao Wang
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, P. R. China 230026
| | - Guangming Liu
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, P. R. China 230026
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185
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Fauser H, Uhlig M, Miller R, Klitzing RV. Surface Adsorption of Oppositely Charged SDS:C12TAB Mixtures and the Relation to Foam Film Formation and Stability. J Phys Chem B 2015; 119:12877-86. [DOI: 10.1021/acs.jpcb.5b06231] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heiko Fauser
- Stranski-Laboratorium,
Department of Chemistry, Technische Universitaet Berlin, Strasse des 17.Juni
124, 10623 Berlin, Germany
| | - Martin Uhlig
- Stranski-Laboratorium,
Department of Chemistry, Technische Universitaet Berlin, Strasse des 17.Juni
124, 10623 Berlin, Germany
| | - Reinhard Miller
- Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14424 Potsdam, Germany
| | - Regine von Klitzing
- Stranski-Laboratorium,
Department of Chemistry, Technische Universitaet Berlin, Strasse des 17.Juni
124, 10623 Berlin, Germany
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186
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Huang N, Tao J, Wei S, Chen M, Wei C, Li L. Counter-ion specificity explored in abnormal expansion of supra-molecular aggregates in aqueous solution of alkaline metal salts. J Chem Phys 2015; 143:114901. [DOI: 10.1063/1.4930854] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Ningdong Huang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Jiaojiao Tao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Shenghui Wei
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Mingming Chen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Chengsha Wei
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
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187
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Valiev M, Deng SHM, Wang XB. How Anion Chaotrope Changes the Local Structure of Water: Insights from Photoelectron Spectroscopy and Theoretical Modeling of SCN(-) Water Clusters. J Phys Chem B 2015; 120:1518-25. [PMID: 26352899 DOI: 10.1021/acs.jpcb.5b07257] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The behavior of charged solute molecules in aqueous solutions is often classified using the concept of kosmotropes ("structure makers") and chaotropes ("structure breakers"). There is a growing consensus that the key to kosmotropic/chaotropic behaviors lies in the local solvent region, but the exact microscopic basis for such differentiation is not well-understood. This issue is examined in this work by analyzing size selective solvation of a well-known chaotrope, a negatively charged SCN(-) molecule. Combining experimental photoelectron spectroscopy measurements with theoretical modeling, we examine evolution of solvation structure up to eight waters. We observe that SCN(-) indeed fits the description of weakly hydrated ion, and its solvation is heavily driven by stabilization of water-water interaction network. However, the impact on water structure is more subtle than that associated with "structure breaker". In particular, we observe that the solvation structure of SCN(-) preserves the "packing" structure of the water network but changes local directionality of hydrogen bonds in the local solvent region. The resulting effect is closer to that of "structure weakener", where solute can be readily accommodated into the native water network, at the cost of compromising its stability due to constraints on hydrogen bonding directionality.
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Affiliation(s)
- Marat Valiev
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , P.O. Box 999, Richland, Washington 99352, United States
| | - Shihu H M Deng
- Physical Sciences Division, Pacific Northwest National Laboratory , 902 Battelle Boulevard, P.O. Box 999, MS K8-88, Richland, Washington 99352, United States
| | - Xue-Bin Wang
- Physical Sciences Division, Pacific Northwest National Laboratory , 902 Battelle Boulevard, P.O. Box 999, MS K8-88, Richland, Washington 99352, United States
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188
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Zhu Y, Free ML. Evaluation of Ion Effects on Surfactant Aggregation from Improved Molecular Thermodynamic Modeling. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02103] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yakun Zhu
- Department of Metallurgical
Engineering, University of Utah, 135 S 1460 E, Room 412, Salt Lake City, Utah 84112, United States
| | - Michael L. Free
- Department of Metallurgical
Engineering, University of Utah, 135 S 1460 E, Room 412, Salt Lake City, Utah 84112, United States
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189
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Yang J, Calero C, Bonomi M, Martí J. Specific Ion Binding at Phospholipid Membrane Surfaces. J Chem Theory Comput 2015; 11:4495-9. [DOI: 10.1021/acs.jctc.5b00540] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing Yang
- Department
of Physics and Nuclear Engineering, Technical University of Catalonia-Barcelona Tech, B4-B5 Northern Campus, Jordi Girona 1-3, 08034 Barcelona, Catalonia, Spain
| | - Carles Calero
- Center
for Polymer Studies and Department of Physics, Boston University, 590
Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Massimiliano Bonomi
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Jordi Martí
- Department
of Physics and Nuclear Engineering, Technical University of Catalonia-Barcelona Tech, B4-B5 Northern Campus, Jordi Girona 1-3, 08034 Barcelona, Catalonia, Spain
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190
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Amino acid-based surfactants – do they deserve more attention? Adv Colloid Interface Sci 2015; 222:79-91. [PMID: 25846628 DOI: 10.1016/j.cis.2014.10.013] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 10/28/2014] [Indexed: 11/20/2022]
Abstract
The 20 standard amino acids (together with a few more that are not used in the biosynthesis of proteins) constitute a versatile tool box for synthesis of surfactants. Anionic, cationic and zwitterionic amphiphiles can be prepared and surfactants with several functional groups can be obtained by the proper choice of starting amino acid. This review gives examples of procedures used for preparation and discusses important physicochemical properties of the amphiphiles and how these can be taken advantage of for various applications. Micelles with a chiral surface can be obtained by self-assembly of enantiomerically pure surfactants and such supramolecular chirality can be utilized for asymmetric organic synthesis and for preparation of mesoporous materials with chiral pores. Surfactants based on amino acids with two carboxyl groups are effective chelating agents and can be used as collectors in mineral ore flotation. A surfactant based on cysteine readily oxidizes into the corresponding cystine compound, which can be regarded as a gemini surfactant. The facile and reversible cysteine-cystine transformation has been taken advantage of in the design of a switchable surfactant. A very attractive aspect of surfactants based on amino acids is that the polar head-group is entirely natural and that the linkage to the hydrophobic tail, which is often an ester or an amide bond, is easily cleaved. The rate of degradation can be tailored by the structure of the amphiphile. The ester linkage in betaine ester surfactants is particularly susceptible to alkaline hydrolysis and this surfactant type can be used as a biocide with short-lived action. This paper is not intended as a full review on the topic. Instead it highlights concepts that are unique to amino acid-based surfactants and that we believe can have practical implications.
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191
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Wen Q, Chen JX, Tang YL, Wang J, Yang Z. Assessing the toxicity and biodegradability of deep eutectic solvents. CHEMOSPHERE 2015; 132:63-9. [PMID: 25800513 DOI: 10.1016/j.chemosphere.2015.02.061] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 02/01/2015] [Accepted: 02/26/2015] [Indexed: 05/16/2023]
Abstract
Deep eutectic solvents (DESs) have emerged as a new type of promising ionic solvents with a broad range of potential applications. Although their ecotoxicological profile is still poorly known, DESs are generally regarded as "green" because they are composed of ammonium salts and H-bond donors (HBDs) which are considered to be eco-friendly. In this work, cholinium-based DESs comprised of choline chloride (ChCl) and choline acetate (ChAc) as the salt and urea (U), acetamide (A), glycerol (G) and ethylene glycol (EG) as the HBD were evaluated for their toxic effects on different living organisms such as Escherichia coli (a bacterium), Allium sativum (garlic, a plant) and hydra (an invertebrate), and their biodegradabilities were assessed by means of closed bottle tests. These DESs possessed an anti-bacterial property and exhibited inhibitory effects on the test organisms adopted, depending on the composition and concentration of the DES. The mechanism for the impact of DESs and their components on different living organisms can be associated to their interactions with the cellular membranes. Not all DESs can be considered readily biodegradable. By extending the limited knowledge about the toxicity and biodegradation of this particular solvent family, this investigation on DESs provides insight into our structure-based understanding of their ecotoxicological behavior.
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Affiliation(s)
- Qing Wen
- College of Life Sciences, Shenzhen Key Laboratory of Marine Bioresources and Ecology, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Jing-Xin Chen
- College of Life Sciences, Shenzhen Key Laboratory of Marine Bioresources and Ecology, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Yu-Lin Tang
- College of Life Sciences, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Juan Wang
- College of Life Sciences, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Zhen Yang
- College of Life Sciences, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China.
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192
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Victorov AI, Voznesenskiy MA, Safonova EA. Spatial networks in solutions of wormlike aggregates: universal behaviour and molecular portraits. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4524] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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193
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Khoshsima A, Dehghani MR, Touraud D, Kunz W. Effects of salts and sucrose on the phase behavior of ternary mixtures of water, decane, and mono-ethylene glycol butyl ether. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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194
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Tehrani-Bagha A, Holmberg K, van Ginkel C, Kean M. Cationic gemini surfactants with cleavable spacer: Chemical hydrolysis, biodegradation, and toxicity. J Colloid Interface Sci 2015; 449:72-9. [DOI: 10.1016/j.jcis.2014.09.072] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 09/27/2014] [Accepted: 09/29/2014] [Indexed: 10/24/2022]
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195
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Zhang L, Mikhailovskaya A, Yazhgur P, Muller F, Cousin F, Langevin D, Wang N, Salonen A. Precipitating Sodium Dodecyl Sulfate to Create Ultrastable and Stimulable Foams. Angew Chem Int Ed Engl 2015; 54:9533-6. [DOI: 10.1002/anie.201503236] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/17/2015] [Indexed: 11/09/2022]
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196
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Zhang L, Mikhailovskaya A, Yazhgur P, Muller F, Cousin F, Langevin D, Wang N, Salonen A. Precipitating Sodium Dodecyl Sulfate to Create Ultrastable and Stimulable Foams. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503236] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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197
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Ontiveros JF, Pierlot C, Catté M, Molinier V, Salager JL, Aubry JM. Structure–interfacial properties relationship and quantification of the amphiphilicity of well-defined ionic and non-ionic surfactants using the PIT-slope method. J Colloid Interface Sci 2015; 448:222-30. [DOI: 10.1016/j.jcis.2015.02.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/09/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
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198
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Sartuqui J, D’ Elía N, Gravina AN, Messina PV. Analyzing the hydrodynamic and crowding evolution of aqueous hydroxyapatite-gelatin networks: Digging deeper into bone scaffold design variables. Biopolymers 2015; 103:393-405. [DOI: 10.1002/bip.22645] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Javier Sartuqui
- Department of Chemistry; Universidad Nacional del Sur; (8000) Bahía Blanca Argentina INQUISUR-CONICET
| | - Noelia D’ Elía
- Department of Chemistry; Universidad Nacional del Sur; (8000) Bahía Blanca Argentina INQUISUR-CONICET
| | - A. Noel Gravina
- Department of Chemistry; Universidad Nacional del Sur; (8000) Bahía Blanca Argentina INQUISUR-CONICET
| | - Paula V. Messina
- Department of Chemistry; Universidad Nacional del Sur; (8000) Bahía Blanca Argentina INQUISUR-CONICET
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199
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Multinuclear NMR studies on the effect of electrostatic and hydrophobic interactions on bindings to counterions to weakly acidic and basic polyelectrolytes. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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200
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Gao Y, Chowdhury MR, Liang JT, Dhar P. Effects of monovalent and multivalent ions on the stability of a polyelectrolyte complex with entrapped surfactants. J Appl Polym Sci 2015. [DOI: 10.1002/app.42099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yan Gao
- Department of Chemical and Petroleum Engineering; University of Kansas; 1530 West 15th Street Lawrence Kansas 66045
| | - Monica Roy Chowdhury
- Department of Chemical and Petroleum Engineering; University of Kansas; 1530 West 15th Street Lawrence Kansas 66045
| | - Jenn-Tai Liang
- Department of Chemical and Petroleum Engineering; University of Kansas; 1530 West 15th Street Lawrence Kansas 66045
| | - Prajnaparamita Dhar
- Department of Chemical and Petroleum Engineering; University of Kansas; 1530 West 15th Street Lawrence Kansas 66045
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