1
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Fischer P, Lutz-Bueno V. Glycyrrhizic acid aggregates seen from a synthetic surfactant perspective. Phys Chem Chem Phys 2024; 26:2806-2814. [PMID: 38196347 PMCID: PMC10806618 DOI: 10.1039/d3cp04835g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/19/2023] [Indexed: 01/11/2024]
Abstract
Bio- or plant-based surfactants are a sustainable and renewable alternative to replace synthetic chemicals for environmental, drugs and food applications. However, these "green" surfactants have unique molecular structures, and their self-assembly in water might lead to complex morphologies and unexpected properties. The micellization of saponin molecules, such as glycyrrhizic acid (GA), differs significantly from those of conventional synthetic surfactants, yet these differences are often overlooked. Saponins self-assemble in complex hierarchical helical morphologies similar to bile salts, rather than the expected globular, ellipsoidal and wormlike micelles. Here, we review two potential routes for molecular self-assembly of GA, namely kinetics of crystallization and thermodynamic equilibrium, focusing on their structure as a function of concentration. Some uncertainty remains to define which route is followed by GA self-assembly, as well as the first type of aggregate formed at low concentrations, thus we review the state-of-the-art information about GA assembly. We compare the self-assembly of GA with conventional linear surfactants, and identify their key similarities and differences, from molecular and chemical perspectives, based on the critical packing parameter (CPP) theory. We expect that this work will provide perspectives for the unclear process of GA assembly, and highlight its differences from conventional micellization.
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Affiliation(s)
- Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland.
| | - Viviane Lutz-Bueno
- Laboratory of Neutron Scattering and Imaging, Paul Scherrer Institut PSI, 5232 Villigen, Switzerland.
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2
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Okasaki FB, Duarte LGTA, Sabadini E. Increasing the aqueous solubility of the anesthetic propofol through wormlike micelle formation. Colloids Surf B Biointerfaces 2023; 232:113592. [PMID: 37857185 DOI: 10.1016/j.colsurfb.2023.113592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/28/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
Propofol, a phenol derivative, is commonly employed as an intravenous anesthetic during clinical procedures, formulated as an oil/water emulsion due to its poor solubility in water. The stability limitations associated with emulsions have prompted research efforts towards developing aqueous formulations of propofol. In this work, we investigate the solubility enhancement of propofol in anionic and cationic surfactants. Our findings reveal that the solubility of propofol can increase significantly, up to 100-fold, depending on the nature of the micellar aggregate, as observed for alkylammonium halogenates CnTAB (for n = 12, 14 and 16), contrasting with the lower solubility with SDS. Interestingly, C14TAB and C16TAB demonstrate significantly higher solubility than C12TAB. This was attributed to the formation of wormlike micelles, in which the propofol molecules are positioned between the cationic heads of the surfactant molecules, changing the micellar curvature and the morphology of the aggregate. Therefore, the aromatic molecules in the micellar environment can be partitioned into the micellar cores and their palisades. Regarding C12TAB, the alkyl chain is too short to form wormlike micelles, thus, concentrating propofol molecules mainly into the micellar core, and consequently, leading to their aggregation. Solubility diagrams of propofol were constructed in conjunction with different surfactants. The systems exhibiting viscoelastic behavior, indicative of wormlike micelle formation, were further investigated using rheology. Additionally, the fluorescent properties of propofol enabled the examination of the anesthetic molecule within diverse micellar environments.
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Affiliation(s)
- Fernando B Okasaki
- Department of Physical Chemistry, Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, Campinas 13084-862, SP, Brazil
| | - Luís G T A Duarte
- Department of Physical Chemistry, Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, Campinas 13084-862, SP, Brazil
| | - Edvaldo Sabadini
- Department of Physical Chemistry, Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, Campinas 13084-862, SP, Brazil.
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3
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Wang D, Xiao Z, He J, Xu W, Wang J. Strong Synergistic Molecular Interaction in Catanionic Surfactant Mixtures: Unravelling the Role of the Benzene Ring. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12649-12661. [PMID: 37651421 DOI: 10.1021/acs.langmuir.3c01328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Noncovalent interactions play a crucial role in driving the formation of diverse self-assembled structures in surfactant systems. Surfactants containing a benzene ring structure are an important subset of surfactants. These surfactants exhibit unique colloid and interfacial properties, which give rise to fascinating transformations in the aggregate structures. These transformations are directly influenced by specific noncovalent interactions facilitated by the benzene ring structure including cation-π and π-π interactions. Investigating catanionic surfactant systems that incorporate benzene ring structures provides valuable insights into the distinct noncovalent interactions observed in mixed surfactant systems. Our approach involved studying the enthalpy change ΔH during the titration process, utilizing isothermal titration calorimetry (ITC). Simultaneously, we employed cryogenic transmission electron microscopy (cryo-TEM) to observe the corresponding self-assembly structures. To gain further insight, we delved into the noncovalent interactions of the mixed systems by analyzing the molecular environments variations through chemical shifts of the aggregates using proton magnetic resonance (1H NMR). The intermolecular interaction was also confirmed by the two-dimensional nuclear Overhauser enhancement spectroscopy (2D NOESY). We conducted a systematic study of the effects of NaCl concentrations, molar ratios, and molecular structures of surfactants on aggregate structures. The existence forms of surfactants are closely linked to the shape of the titration curve and the transition of the aggregate structures. When cationic surfactants were titrated into sodium dodecylbenzenesulfonate (SDBS) micelle solutions, the dominant cation-π interaction leads to the direct formation of vesicle structures. Conversely, when the SDBS system is titrated into benzyldimethyldodecylammonium chloride (DDBAC) micelles, a delicate balance of multiple noncovalent interactions, including cation-π, π-π, hydrophobic, and electrostatic forces, results in a range of aggregate structure transformations such as worm-like micelles and vesicular structures.
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Affiliation(s)
- Dianlin Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
- Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500, China
| | - Zili Xiao
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Jiang He
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Wei Xu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Jingyi Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
- Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500, China
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4
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Gong J, Yao K, Sun Q, Sun Y, Sun L, Liu C, Xu B, Tan J, Zhao L, Xu B. Interfacial Composition of Surfactant Aggregates in the Presence of Fragrance: A Chemical Trapping Study. Molecules 2022; 27:molecules27144333. [PMID: 35889205 PMCID: PMC9320350 DOI: 10.3390/molecules27144333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 12/02/2022] Open
Abstract
In recent years, there has been increasing interest in daily-use chemical products providing a pleasant scent. The added fragrance molecules may induce microstructural transitions of surfactant aggregates, which further affect the physical and chemical properties of the products. Here, the effects of four types of aromatic alcohols (cinnamyl alcohol, phenyl ethanol, phenyl methanol and anisyl alcohol) on cetyltrimethylammonium bromide (CTAB)/KBr aggregates were studied. The combined results from rheology, dynamic light scattering, and transmission electron microscopy measurements showed that cinnamyl alcohol induced significant micellar growth, while increases in micellar growth were less obvious for the other aromatic alcohols. The changes in the interfacial molarities of water, aromatic alcohol, and bromide ions during such transitions were studied using the chemical trapping method. Transitions resulting from added cinnamyl alcohol were accompanied by significant declines in interfacial water and bromide ion molarities, and a rise in interfacial alcohol molarity. The marked decrease in interfacial water molarity was not observed in previous studies of the octanol induced formation of wormlike micelles and vesicles, indicating that a different mechanism was presented in the current system. Nuclear magnetic resonance investigation showed that π–π stacking between cinnamyl alcohols, but not cation–π interactions between alcohols and CTAB headgroups, facilitated the tight packing of alcohol molecules in CTAB aggregates and the repulsion of water from the interfacial region. The current study may provide a theoretical basis for the morphological regulation of surfactant aggregates in the presence of additives.
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Affiliation(s)
- Jiani Gong
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Kaixin Yao
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Qihan Sun
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Yujia Sun
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Lijie Sun
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Changyao Liu
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
- Correspondence: (C.L.); (B.X.)
| | - Bo Xu
- McIntire School of Commerce, University of Virginia, Charlottesville, VA 22903, USA
- Correspondence: (C.L.); (B.X.)
| | - Jiajing Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China;
| | - Li Zhao
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
| | - Baocai Xu
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (J.G.); (K.Y.); (Q.S.); (Y.S.); (L.S.); (L.Z.); (B.X.)
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5
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Jeon E, Kang JM, Bae G, Zeng CH, Shin S, Lee B, Park W, Park J, Lee J. Flexible 3D Nanonetworked Silica Film as a Polymer-Free Drug-Eluting Stent Platform to Effectively Suppress Tissue Hyperplasia in Rat Esophagus. Adv Healthc Mater 2022; 11:e2200389. [PMID: 35576185 DOI: 10.1002/adhm.202200389] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/24/2022] [Indexed: 11/08/2022]
Abstract
Loading and eluting drugs on self-expandable metallic stents (SEMSs) can be challenging in terms of fabrication, mechanical stability, and therapeutic effects. In this study, a flexible 3D nanonetworked silica film (NSF) capable of withstanding mechanical stress during dynamic expansion is constructed to function as a drug delivery platform on an entire SEMS surface. Despite covering a broad curved area, the synthesized NSF is defect-free and thin enough to increase the stent strut diameter (110 µm) by only 0.4 percent (110.45 µm). The hydrophobic modification of the surface enables loading of 4.7 times the sirolimus (SRL) concentration in NSF than Cypher, polymer-coated commercial stent, which is based on the same thickness of coating layer. Furthermore, SRL-loaded NSF exhibits a twofold delay in release compared to the control group without NSF. The SRL-loaded NSF SEMS significantly suppresses stent-induced tissue hyperplasia than the control SEMS in the rat esophagus (all variables, p < 0.05). Thus, the developed NSF is a promising polymer-free drug delivery platform to efficiently treat esophageal stricture.
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Affiliation(s)
- Eunyoung Jeon
- Department of Chemistry Hanyang University 222 Wangsimni‐Ro, Seongdong‐Gu Seoul 04763 Republic of Korea
| | - Jeon Min Kang
- Biomedical Engineering Research Center Asan Institute for Life Sciences Asan Medical Center 88 Olympic‐ro 43‐gil, Songpa‐gu Seoul 05505 Republic of Korea
| | - Ga‐Hyun Bae
- Department of Integrative Biotechnology College of Biotechnology and Bioengineering Sungkyunkwan University Seoburo 2066, Suwon Gyeonggi 16419 Republic of Korea
| | - Chu Hui Zeng
- Biomedical Engineering Research Center Asan Institute for Life Sciences Asan Medical Center 88 Olympic‐ro 43‐gil, Songpa‐gu Seoul 05505 Republic of Korea
| | - Seungyong Shin
- Department of Integrative Biotechnology College of Biotechnology and Bioengineering Sungkyunkwan University Seoburo 2066, Suwon Gyeonggi 16419 Republic of Korea
| | - Byeongdu Lee
- X‐Ray Science Division Argonne National Laboratory Argonne IL 60439 USA
| | - Wooram Park
- Department of Integrative Biotechnology College of Biotechnology and Bioengineering Sungkyunkwan University Seoburo 2066, Suwon Gyeonggi 16419 Republic of Korea
| | - Jung‐Hoon Park
- Biomedical Engineering Research Center Asan Institute for Life Sciences Asan Medical Center 88 Olympic‐ro 43‐gil, Songpa‐gu Seoul 05505 Republic of Korea
| | - Joonseok Lee
- Department of Chemistry Hanyang University 222 Wangsimni‐Ro, Seongdong‐Gu Seoul 04763 Republic of Korea
- Research Institute for Convergence of Basic Sciences Hanyang University 222 Wangsimni‐Ro, Seongdong‐Gu Seoul 04763 Republic of Korea
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6
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Zhao Y, Qi K, Zhu B, Long H, Huang Q, Lei F, Huang Z, Zhou J. Effect of chain rigidity on morphological transformation and adsorption behaviors of biocompatible polyoxyethylene-based surfactants at water–air surface. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04906-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Wang F, Zhang Z, Wei Y, Zhou T, Wang X, Zhang G. Rheology study of wormlike micellar solution formed by 1-hexadecyl-3-methylimidazolium tetrafluoroborate ionic liquids in present of sodium salicylate. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1775636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Fang Wang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Zhiqing Zhang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Ying Wei
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Ting Zhou
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Xiufeng Wang
- College of Science, China University of Petroleum, Qingdao, P. R. China
| | - Guodong Zhang
- College of Science, China University of Petroleum, Qingdao, P. R. China
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8
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UV-responsive micellar systems and aqueous two-phase systems based on cationic ester-containing gemini surfactant and sodium trans-ortho-methoxycinnamate. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04826-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Queirós MVA, Loh W. From Associative to Segregative Phase Separation: The Phase Behavior of Poly(acrylate)/Dodecyltrimethylammonium Complex Salts in the Presence of NaBr and NaCl. J Phys Chem B 2021; 125:2968-2975. [PMID: 33720730 DOI: 10.1021/acs.jpcb.0c11245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report here a systematic study on the phase behavior of dodecyltrimethylammonium-poly(acrylate) (C12TAPA) complex salts upon addition of simple salts (NaBr and NaCl). Complex salts of poly(acrylate) of two molar masses were employed (2000 and 450,000 g mol-1). Systems containing different surfactant mesophases were observed, whose structures were elucidated by small-angle X-ray scattering analyses. Overall, we observe a transition from associative to segregative phase separation intercalated with monophasic regions. In terms of surfactant association, a transition from micellar cubic phases to an isotropic micellar solution was observed, where these two phases occur in equilibrium with a dilute phase as a consequence of associative phase separation. However, as the salt concentration increases, segregative phase separation is observed, and scattering analyses of the surfactant-rich phase indicate the growth of micellar aggregates. These results are discussed in terms of the electrolyte effect screening the interactions between the oppositely charged surfactant and polymer and as a result of salting-out effects of the different electrolytes that prevail at higher concentrations.
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Affiliation(s)
| | - Watson Loh
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, 13083-970 Campinas, São Paulo, Brazil
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10
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Perini I, Ambrosi M, Tanini D, Ninham BW, Capperucci A, Nostro PL. Ascorbyl‐6‐O‐oleate: A Bioconjugate Antioxidant Lipid. ChemistrySelect 2020. [DOI: 10.1002/slct.201903528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ilaria Perini
- Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia, 3 50019 Sesto Fiorentino Firenze Italy
| | - Moira Ambrosi
- Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia, 3 50019 Sesto Fiorentino Firenze Italy
| | - Damiano Tanini
- Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia, 3 50019 Sesto Fiorentino Firenze Italy
| | - Barry W. Ninham
- Department of Applied Mathematics, Research School of Physics Australian National University Canberra Australia 0200
| | - Antonella Capperucci
- Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia, 3 50019 Sesto Fiorentino Firenze Italy
| | - Pierandrea Lo Nostro
- Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia, 3 50019 Sesto Fiorentino Firenze Italy
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11
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Jora MZ, de Souza RN, Barbosa TM, Tormena CF, Sabadini E. Probing the Formation of Wormlike Micelles Formed by Cationic Surfactant with Chlorobenzoate Derivatives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:17046-17053. [PMID: 31809055 DOI: 10.1021/acs.langmuir.9b02173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The energy released when tetradecyltrimethylammonium bromide (C14TAB) is combined with different derivatives of chlorobenzoates in an isothermal titration calorimeter (ITC) allows a direct evaluation of the spontaneity of the threading of the aromatic anions into the micellar palisade. The comparison between the enthalpimetric curves with the ones for viscosity of the solutions, hydrodynamic radii of the aggregates (dynamic light scattering experiments), and the fraction of aromatic anions incorporated (diffusion-ordered spectroscopy experiments) allows the establishment of the variations of enthalpy with formation, growth, and decrease of the wormlike micelles (WLMs). The formation of WLMs with C14TAB is very favored (very exothermic) for titrations of chlorobenzoate derivatives which present the chlorine atom in positions 3 or 4 of the aromatic ring. However, the aggregation is highly unfavorable if chlorine is at position 2 of chlorobenzoate. According to the results, the high potential of the ITC to determine critical concentrations and the energies associated with the aggregation of a cationic surfactant and aromatic anions for the formation of WLMs was demonstrated.
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Affiliation(s)
- Manazael Z Jora
- Physical Chemistry Department, Institute of Chemistry , University of Campinas-UNICAMP . P.O. Box 6154, 13084-862 Campinas , São Paulo , Brazil
| | - Renato N de Souza
- Physical Chemistry Department, Institute of Chemistry , University of Campinas-UNICAMP . P.O. Box 6154, 13084-862 Campinas , São Paulo , Brazil
| | - Thaís M Barbosa
- Organic Chemistry Department, Institute of Chemistry , University of Campinas-UNICAMP , P.O. Box: 6154, 13083-970 Campinas , São Paulo , Brazil
| | - Cláudio F Tormena
- Organic Chemistry Department, Institute of Chemistry , University of Campinas-UNICAMP , P.O. Box: 6154, 13083-970 Campinas , São Paulo , Brazil
| | - Edvaldo Sabadini
- Physical Chemistry Department, Institute of Chemistry , University of Campinas-UNICAMP . P.O. Box 6154, 13084-862 Campinas , São Paulo , Brazil
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12
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Nonpolar Interface Composition in Cetyltrimethylammonium Bromide Reverse Micellar Environments to Control Size and Induce Anisotropy on Gold Nanoparticles. ChemistrySelect 2019. [DOI: 10.1002/slct.201903844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Hao LS, Xiao K, Hu Y, Zhang SS, Liu JX, Wei YY, Chen Y, Nan YQ. Mixed Micellization of Cationic/Anionic Surfactants: Role of Matching Water Affinities between Oppositely Charged Headgroups and That between Oppositely Charged Constituent Counterions. J Phys Chem B 2019; 123:8140-8153. [DOI: 10.1021/acs.jpcb.9b05982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Sheng Hao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Kai Xiao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yan Hu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Sha-Sha Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Jian-Xiu Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yuan-Yuan Wei
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yue Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yan-Qing Nan
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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14
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Thermodynamic insights and molecular environments into catanionic surfactant systems: Influence of chain length and molar ratio. J Colloid Interface Sci 2019; 548:77-87. [PMID: 30981965 DOI: 10.1016/j.jcis.2019.04.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/05/2019] [Accepted: 04/07/2019] [Indexed: 01/09/2023]
Abstract
HYPOTHESIS Imidazolium-based Ionic liquids as new generation cationic surfactants can provide designable alkyl chain length. In the catanionic surfactant systems, the alkyl chain lengths and molar ratios can greatly influence the interactions such as electrostatic and hydrophobic interaction. The variation in these interactions has a significant effect on the molecular environments of the self-assembly structure, and this process is always accompanied by the transition of aggregates and release or consumption of heat. Hence, it is of interest to study the relationship between intermolecular interactions, molecular environments, self-assembly structure and the change in energy of system in the catanionic surfactant mixed systems. EXPERIMENTS The enthalpy change ΔH of titrations the imidazolium-based into SDS micelle solution was studied to characterize the heat by using isothermal titration calorimetry (ITC) during the transitions of the aggregate structures. The corresponding self-assembly structure was monitored via cryogenic transmission electron microscopy (cryo-TEM). Employing proton magnetic resonance (1H NMR), we focus on the interactions between imidazolium-based ILs and SDS based on the variations in the molecular environments of aggregates. FINDINGS Of these imidazolium-based ionic liquids/SDS system, the 1-octyl-3-methylimidazolium ([OMIM]Cl)/SDS system shows several features such as intense energy absorption and releasing processes, which indicate the formation of high entanglement wormlike micelles and vesicles. This is related to the formation of self-adjusting state between the SDS and [OMIM]Cl molecules due to the balance between the electrostatic interaction and hydrophobic interaction. Varying the alkyl chain length appears to cause significant differences to the molecular environments. From the molecular environments, three different models about the polarity of the catanionic surfactant molecules are used to explain the balance of the intermolecular interactions.
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15
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Bernardino K, Farias de Moura A. Electrostatic potential and counterion partition between flat and spherical interfaces. J Chem Phys 2019; 150:074704. [DOI: 10.1063/1.5078686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Kalil Bernardino
- Institute of Chemistry, University of São Paulo, São Paulo, SP, Brazil
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16
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Mandal T, Larson RG. Stretch and Breakage of Wormlike Micelles under Uniaxial Strain: A Simulation Study and Comparison with Experimental Results. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12600-12608. [PMID: 30251869 DOI: 10.1021/acs.langmuir.8b02421] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We use coarse-grained (CG) molecular dynamics simulations to determine the effect of uniaxial strain on the stress, scission stress, and scission energy of solutions of wormlike micelles of cetyltrimethylammonium chloride/sodium salicylate (NaSal). We find that the breaking stress, stretch modulus, and scission energy of the charged micelles are nonmonotonic functions of oppositely charged hydrotrope (NaSal) concentration. While the stretch modulus shows a peak at a value of surfactant-to-hydrotrope concentration ratio ( R) close to unity as expected due to neutralization of head-group charge at R = 1, the breaking stress and scission energy produce a peak at R < 1.0 because of thinning of the micelle diameter with increased R. The breaking stress from the simulations depends on the rate of deformation and roughly agrees with the experimental values of Rothstein ( J. Rheol. 2003 , 47 , 1227 ) after extrapolation to the much lower experimental rates. The method and results can be used to predict the effects of flow and mechanical stress on rates of micellar breakage, which is important in the rheology of wormlike micellar solutions.
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Affiliation(s)
- Taraknath Mandal
- Department of Chemical Engineering , University of Michigan , 10-A150 NCRC, 2800 Plymouth Ave. , Ann Arbor , Michigan 48109 , United States
| | - Ronald G Larson
- Department of Chemical Engineering , University of Michigan , 10-A150 NCRC, 2800 Plymouth Ave. , Ann Arbor , Michigan 48109 , United States
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Zhang J, Zhang Y, Li J, Wang P, Sun X, Yan Y. Effect of organic salt on the self-assembly of ammonium gemini surfactant: An experiment and simulation study. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aggregation and reactivity in aqueous solutions of cationic surfactants and aromatic anions across concentration scales. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Zhang S, Weng Q, Zhao F, Gao H, Chen P, Chen X, An Z. High electrocapacitive performance of bowl-like monodispersed porous carbon nanoparticles prepared with an interfacial self-assembly process. J Colloid Interface Sci 2017; 496:35-43. [DOI: 10.1016/j.jcis.2016.10.080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
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21
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Study on the transformation from linear to branched wormlike micelles: An insight from molecular dynamics simulation. J Colloid Interface Sci 2017; 494:47-53. [DOI: 10.1016/j.jcis.2017.01.057] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 11/17/2022]
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Lutz-Bueno V, Liebi M, Kohlbrecher J, Fischer P. Intermicellar Interactions and the Viscoelasticity of Surfactant Solutions: Complementary Use of SANS and SAXS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2617-2627. [PMID: 28221812 DOI: 10.1021/acs.langmuir.6b04466] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In ionic surfactant micelles, basic interactions among distinct parts of surfactant monomers, their counterion, and additives are fundamental to tuning molecular self-assembly and enhancing viscoelasticity. Here, we investigate the addition of sodium salicylate (NaSal) to hexadecyltrimethylammonium chloride and bromide (CTAC and CTAB) and 1-hexadecylpyridinium chloride and bromide (CPyCl and CPyBr), which have distinct counterions and headgroup structures but the same hydrophobic tail. Different contrasts are obtained from small-angle neutron scattering (SANS), which probes differences between the nucleus of atoms, and X-rays SAXS, which probes differences in electron density. If combined, this contrast allows us to define specific intramicellar length scales and intermicellar interactions. SANS signals are sensitive to the contrast between the solvent (D2O) and the hydrocarbonic tails in the micellar core (hydrogen), and SAXS can access the inner structure of the polar shell because the headgroups, counterions, and penetrated salt have higher electron densities compared to the solvent and to the micellar core. The number density, intermicellar distances, aggregation number, and inter/intramicellar repulsions are discussed on the basis of the dependence of the structure factor and form factor on the micellar aggregate morphology. Therefore, we confirm that micellar growth can be tuned by variations in the flexibility and size of the the headgroup as well as the ionic dissociation rate of its counterion. Additionally, we show that the counterion binding is even more significant to the development of viscoelasticity than the headgroup structure of a surfactant molecule. This is a surprising finding, showing the importance of electrostatic charges in the self-assembly process of ionic surfactant molecules.
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Affiliation(s)
- Viviane Lutz-Bueno
- Institute of Food, Nutrition and Health, ETH Zurich , 8092 Zurich, Switzerland
| | | | | | - Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zurich , 8092 Zurich, Switzerland
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Lutz-Bueno V, Isabettini S, Walker F, Kuster S, Liebi M, Fischer P. Ionic micelles and aromatic additives: a closer look at the molecular packing parameter. Phys Chem Chem Phys 2017; 19:21869-21877. [DOI: 10.1039/c7cp03891g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuning mixture of ionic surfactants with aromatic additives results in micelles with impressive viscoelastic properties.
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Affiliation(s)
- Viviane Lutz-Bueno
- Institute of Food, Nutrition and Health
- ETH Zurich
- 8092 Zurich
- Switzerland
- Swiss Light Source
| | | | - Franziska Walker
- Institute of Food, Nutrition and Health
- ETH Zurich
- 8092 Zurich
- Switzerland
| | - Simon Kuster
- Institute of Food, Nutrition and Health
- ETH Zurich
- 8092 Zurich
- Switzerland
| | - Marianne Liebi
- Swiss Light Source
- Paul Scherrer Institute
- 5232 Villigen PSI
- Switzerland
| | - Peter Fischer
- Institute of Food, Nutrition and Health
- ETH Zurich
- 8092 Zurich
- Switzerland
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Sethi V, Mishra J, Bhattacharyya A, Sen D, Ganguli AK. Hydrotrope induced structural modifications in CTAB/butanol/water/isooctane reverse micellar systems. Phys Chem Chem Phys 2017; 19:22033-22048. [DOI: 10.1039/c7cp03191b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SAXS and NMR studies to gain insight of structural alterations in reverse micellar nanotemplates in presence of hydrotropes.
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Affiliation(s)
- Vaishali Sethi
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Jayanti Mishra
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Arpan Bhattacharyya
- Surface Physics and Material Science Division
- Saha Institute of Nuclear Physics
- Kolkata-700064
- India
| | - Debasis Sen
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Ashok K. Ganguli
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
- Institute of Nano Science & Technology
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