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Singh M, Kumar S, Aswal VK, Kang TS. Mixed Aggregates of Surface-Active Ionic Liquids and 14-2-14 Gemini Surfactants in an Aqueous Medium as Fluid Scaffolds for Enzymology of Cytochrome-c. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11582-11595. [PMID: 37552854 DOI: 10.1021/acs.langmuir.3c01050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
The aggregation behavior of the surface-active ionic liquid (SAIL), 3-(2-(hexadecyloxy)-2-oxoethyl)-1-methyl-1H-imidazol-3-ium chloride, [C16Emim][Cl], and a gemini surfactant (GS) (14-2-14) in the whole mole fraction range has been investigated in an aqueous medium employing various techniques. Experimentally obtained values of critical aggregation concentration (cac) are in good agreement with the theoretical cac values obtained using Clint's equation. Rubingh's model has been employed to evaluate the extent of synergistic interactions between two components, which has been found to be dependent upon the composition of a mixture of surfactants. The polarity index, hydrodynamic diameter (Dh), zeta potential (ζ-Pot.), and morphology of the aggregates have been found to be dependent upon the extent of hydrophobic as well as dipolar interactions and the degree of counterion binding governed by the content of the GS in mixed aggregates. Thermodynamic parameters evaluated employing isothermal titration calorimetry have revealed the aggregation as an entropy-driven process. Density functional theory calculations provide a detailed account of the SAIL-GS interactions at the molecular level. The reduced density gradient (RDG) along with the calculated isosurfaces asserts that the dominant interactions are noncovalent interactions. Furthermore, the enzymology of cytochrome-c in the aqueous SAIL-GS aggregated systems has been investigated and a two-fold increase in the enzyme activity has been observed in the aggregates formed by the GS as compared to that in buffer.
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Affiliation(s)
- Manpreet Singh
- Department of Chemistry, UGC-Centre for Advance Studies - II, Guru Nanak Dev University, Amritsar 143005, India
| | - Sugam Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Vinod Kumar Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Tejwant Singh Kang
- Department of Chemistry, UGC-Centre for Advance Studies - II, Guru Nanak Dev University, Amritsar 143005, India
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2
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Wang B, Zhu Z, Yin J, Lu X. Microemulsion system formed with new piperazinium-based surface-active ionic liquid. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Wachsmann SB, Bauhof J, Raab AR, Zens A, Sottmann T, Laschat S. N-Alkylimidazolium carboxylates as a new type of catanionic surface active ionic liquid: synthesis, thermotropic behavior and micellization in water. SOFT MATTER 2022; 18:7773-7781. [PMID: 36177986 DOI: 10.1039/d2sm00854h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Aiming at a new type of salt-free CASAIL (Catanionic Surface Active IL) for electrochemical applications or emulsifiers, dispersants, and foaming or antifoaming agents, we combined mesogenic anions (carboxylate) and cations (imidazolium) of similar shape and size to synthesize a series of congruent ion pairs of 1-alkyl-3-methylimidazolium alkylcarboxylates [Cnmim][Cm-1COO] (n = 10-16, m = 10-16). With particular focus on alkyl chain length varieties in both, imidazolium cations and carboxylate anions (n/m), the self-assembly in the bulk phase and in solution was investigated by differential scanning calorimetry (DSC), polarized optical microscopy (POM), X-ray diffraction (XRD) experiments and surface tension measurements. Our results revealed that the presence of long alkyl chains on both the cation n and anion m leads to improved thermal stability of the bulk material while maintaining broad lamellar (SmA) mesophases. In water, we observed a strong and linear decrease of log(cmc) for increasing both the carboxylate anion and imidazolium cation chain length due to the increasing hydrophobic effect. Surprisingly, for both thermotropic behavior and micellization, the chain length of the carboxylate anion had a stronger impact than the chain length of the imidazolium cation, indicating its greater surface activity and tendency to form micelles.
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Affiliation(s)
- Sebastian B Wachsmann
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
| | - Jessica Bauhof
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
| | - Aileen Rebecca Raab
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
| | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
| | - Thomas Sottmann
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
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Patel N, Soni SS, Patel N, Patel K, Patel VK, Sharma D, Panjabi SH. Synthesis, Self-Aggregation, Surface Characteristics, Electrochemical Property, Micelle Size, and Antimicrobial Activity of a Halogen-Free Picoline-Based Surface-Active Ionic Liquid. ACS OMEGA 2022; 7:28974-28984. [PMID: 36033664 PMCID: PMC9404176 DOI: 10.1021/acsomega.2c02612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
We present a new approach toward the design of a halogen-free picoline-based surface-active ionic liquid (SAIL) (1-octyl-4-methyl pyridinium dodecyl sulfate) [C8γPic]DS consisting of long dodecyl sulfate (DS) as an anion. The surface properties, micellization behavior, and antimicrobial activity in an aqueous solution were investigated using tensiometry, conductometry, and ultraviolet (UV) spectroscopy. Incorporating the DS group in SAIL leads to lower critical micellar concentration (CMC) and enhanced adsorption at the air/water interface of the functionalized ionic liquid compared to the C8-alkyl chain-substituted pyridine ionic liquids. The antimicrobial activity was evaluated against a representative Gram-negative and Gram-positive bacteria panel. Antibacterial activities increased with the alkyl chain length, C8 being the homologous most effective antimicrobial agent. The micelle size of [C8γPic]DS was determined by the dynamic light-scattering (DLS) study. Cyclic voltammetry (CV) measurements have been employed to evaluate the interaction between the SAIL micelle and working electrode, diffusion coefficient, and micelle size of the SAIL solution. The diffusion coefficient explored the correlation of surface properties and the antimicrobial activity of [C8γPic]DS. This halogen-free SAIL is the future of wetting agents and emulsion studies in agriculture due to its small micelle size and surface characteristics.
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Affiliation(s)
- Nidhi
N. Patel
- Department
of Chemical Sciences, P. D. Patel Institute of Applied Sciences, CHARUSAT University, Changa, Gujarat 388421, India
| | - Saurabh S. Soni
- Department
of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat388120, India
| | - Niraj Patel
- Organic
Chemistry Department, Institute of Science and Technology for Advanced
Research (ISTAR), CVM University, Vallabh Vidyanagar, Anand, Gujarat 388120, India
| | - Kiran Patel
- Director,
Grow Leaf Biotech Private Limited, Anand, Gujarat 388120, India
| | - Vaibhav K. Patel
- Department
of Chemical Sciences, P. D. Patel Institute of Applied Sciences, CHARUSAT University, Changa, Gujarat 388421, India
| | - Deep Sharma
- Department
of Chemical Sciences, P. D. Patel Institute of Applied Sciences, CHARUSAT University, Changa, Gujarat 388421, India
| | - Sanjay H. Panjabi
- Department
of Chemical Sciences, P. D. Patel Institute of Applied Sciences, CHARUSAT University, Changa, Gujarat 388421, India
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Synthesis, Aggregation Behavior and Drug-binding Interactions of Fatty acid-imidazolium-based Surface-active Ionic Liquids. Chem Phys Lipids 2022; 243:105176. [PMID: 35101392 DOI: 10.1016/j.chemphyslip.2022.105176] [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: 10/10/2021] [Revised: 12/29/2021] [Accepted: 01/25/2022] [Indexed: 11/22/2022]
Abstract
The renewable fatty acid-based surface-active ionic liquids (SAILs) containing ethyl-substituted imidazolium head groups were prepared and structurally analyzed by Fourier transform infrared spectroscopy (FTIR), 1HNMR and 13CNMR spectroscopy. The products were named as; 3-ethyl-1-(2-dodecanoyl oxy) ethylimidazolium bromide [C12Eeim]Br, 3-ethyl-1-(2-tetradecanoyl oxy) ethylimidazolium bromide [C14Eeim]Br and 3-ethyl-1-(2-hexadecanoyl oxy) ethylimidazolium bromide [C16Eeim]Br. The critical micelle concentration (cmc) values of the three SAILs have been evaluated using conductivity measurements, probe-less UV-visible spectroscopy and fluorescence spectroscopy. The obtained cmc values were compared with the earlier reported non-functionalized SAILs such as [Cnmim]Br and [Cneim]Br where n= 12, 14, 16. The values were found to be 3 to 9 times lower mainly due to the presence of ester chain and also ethyl substituted imidazole ring. Thermodynamic parameters were evaluated by conductivity data at three different temperatures. Further, the aggregation behavior of SAILs with anesthetic drug, lidocaine hydrochloride (LC) has been studied using fluorescence. The fluorescence and UV-visible studies showed strong synergistic interactions operating between SAILs and drug molecules involving H bonding and cation-π interactions. The interactions grew stronger with the elongation of SAIL-chain length (12C-16C). Dynamic light scattering (DLS) and transmission electron microscopy (TEM) measurements suggested the formation of vesicles in SAIL-LC mixtures. These studies may thus offer an effective candidate which would serve as vectors for drug molecules in terms of their enhanced solubilization, permeability and target-specific delivery.
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7
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Patel NN, Patel K, Sastry NV, Patel VK, Macwan PM, Sharma DS, Panjabi SH. Halogen-free COOH functionalized surface-active ionic liquids: surface activity, aggregation behavior, and antimicrobial activity. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.2010565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nidhi N. Patel
- Department of Chemical Sciences, P.D. Patel Institute of Applied Sciences, Charusat, Changa, Gujarat, India
| | - Kiran Patel
- Department of Biological Sciences, P.D. Patel Institute of Applied Sciences, Charusat, Changa, Gujarat, India
| | - Nandhibatla V. Sastry
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Vaibhav K. Patel
- Department of Chemical Sciences, P.D. Patel Institute of Applied Sciences, Charusat, Changa, Gujarat, India
| | - Pradip M. Macwan
- B.N. Patel Institute of Paramedical & Sciences, Anand, Gujarat, India
| | - Deep S. Sharma
- Department of Chemical Sciences, P.D. Patel Institute of Applied Sciences, Charusat, Changa, Gujarat, India
| | - Sanjay. H. Panjabi
- Department of Chemical Sciences, P.D. Patel Institute of Applied Sciences, Charusat, Changa, Gujarat, India
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8
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Modulation of micellization behavior of imidazolium based surface active ionic liquids by aromatic anions in aqueous medium. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Pal A, Punia R, Dubey GP. Formation of mixed micelles in an aqueous mixture of a biamphiphilic surface active ionic liquid and an anionic surfactant: Experimental and theoretical study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Experimental and DFT studies on surface properties of sulfonate-based surface active ionic liquids. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Dani U, Bahadur A, Kuperkar K. Validating interfacial behaviour of surface-active ionic liquids (SAILs) with computational study integrated with biocidal and cytotoxic assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 186:109784. [PMID: 31634657 DOI: 10.1016/j.ecoenv.2019.109784] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Surface-active ionic liquids (SAILs) belonging to the series of N-alkylmethylimidazolium halides [C8mimX] (X = Br, Cl, and BF4) and [CnmimBr] (n = 10, 12, 14, and 16) were employed to understand the influence of hydrophobicity of alkyl chain length and the chaotropicity of counter-ions of SAILs on the micellization, antimicrobial action and cytotoxicity properties. The micellization phenomenon of SAILs in an aqueous environment was examined employing tensiometry and steady-state fluorescence spectrophotometry. The corresponding interfacial parameters viz., critical micelle concentration (CMC), effectiveness (γCMC), surface pressure (ПCMC), maximum surface excess concentration (Гmax), and the minimum area engaged per molecule (Amin) at the air-water interface were evaluated at 303.15 K. These experimental findings were monitored and geometrically optimized theoretically using Gaussian software to highlight the recent advances in this field of theoretical calculations for putative structure. The simulation descriptors correlated the micellization behavior as a function of hydrophobicity which may contribute to obtaining awareness on their ecological behavior and fate. In addition, the biological screening of all the examined SAILs was undertaken with a combined experimental and theoretical (optimized) method against bacteria and fungus. Results revealed that SAILs with the alkyl chain-length greater than C8- act as a fair antimicrobial agent against the selected microbial strain which is attributed to the enhanced degree of SAILs hydrophobicity. The cytotoxicity of these imidazolium-based SAILs was also assessed on the cervical human cell line (HeLa) using the MTT cell viability assay and the data thus obtained were subjected to statistical analysis.
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Affiliation(s)
- Unnati Dani
- Department of Zoology, P. T. Sarvajanik College of Science (PTSCS), Surat, 395001, Gujarat, India
| | - Anita Bahadur
- Department of Zoology, P. T. Sarvajanik College of Science (PTSCS), Surat, 395001, Gujarat, India
| | - Ketan Kuperkar
- Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, 395007, Gujarat, India.
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12
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Singh O, Singla P, Aswal VK, Mahajan RK. Impact of Aromatic Counter-Ions Charge Delocalization on the Micellization Behavior of Surface-Active Ionic Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14586-14595. [PMID: 31621330 DOI: 10.1021/acs.langmuir.9b02695] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The nature of counter-ions governs the micellar and structural characteristics of surface-active ionic liquids (SAILs). Especially, the introduction of aromatic counter-ions significantly increases their surface adsorption and induces the formation of various types of aggregates like prolate ellipsoidal micelles, rodlike micelles, vesicles, lamellars, etc. The present study reports the role of charge delocalization of two different aromatic counter-ions in the micellization behavior of their respective SAILs in aqueous medium. For this purpose, we have synthesized two SAILs, namely, 1-tetradecyl-3-methylimidzolium phenolate [C14mim][PO] and 1-tetradecyl-3-methylimidzolium benzoate [C14mim][BZ]. The O-atom of phenolate (PO-) possesses negative charge, which is delocalized on its phenyl ring. Conversely, the negative charge of benzoate (BZ-) is not delocalized on its phenyl ring. The more hydrophobic BZ- counter-ion increases the hydrophobic interactions and reduces the electrostatic repulsions more efficiently as compared to PO-, which results in a lower critical micelle concentration (cmc) of [C14mim][BZ] than that of [C14mim][PO]. Interfacial properties obtained by tensiometry reveal better surface activity and absorption efficiency of [C14mim][BZ] as compared to [C14mim][PO]. The increase of cmc and degree of counter-ion binding (β) with the rise of temperature for both SAILs has been observed by conductometry. The decrease in the polarity of pyrene microenvironment explains the higher compactness of [C14mim][BZ] aggregates than that of [C14mim][PO], observed by fluorimetry. The position of PO- and BZ- is in the stern and palisade layers of C14mim+ aggregates, respectively, located by 1H NMR. The existence of prolate ellipsoidal micelles for both SAILs has been established by small-angle neutron scattering measurements. Thus, the interfacial and bulk properties of [C14mim][PO] lie somewhere in between those of the SAILs having perfect aromatic counter-ions, [C14mim][BZ], and the SAILs having regular inorganic counter-ions like Cl-, Br-, etc.
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Affiliation(s)
- Onkar Singh
- Department of Chemistry, UGC-Centre for Advanced Studies-I , Guru Nanak Dev University , Amritsar 143005 , India
| | - Pankaj Singla
- Department of Chemistry, UGC-Centre for Advanced Studies-I , Guru Nanak Dev University , Amritsar 143005 , India
| | - Vinod Kumar Aswal
- Solid State Physics Division , Bhabha Atomic Research Centre , Mumbai 400085 , India
| | - Rakesh Kumar Mahajan
- Department of Chemistry, UGC-Centre for Advanced Studies-I , Guru Nanak Dev University , Amritsar 143005 , India
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13
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Synthesis, properties and adjuvant activity of docusate-based ionic liquids in pesticide formulations. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.05.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Li Q, Tong K, Qiu J, Yan M, Tian Q, Chen X, Yue X. Molecular packing of surface active ionic liquids in a deep eutectic solvent: a small angle X-ray scattering (SAXS) study. SOFT MATTER 2019; 15:5060-5066. [PMID: 31180406 DOI: 10.1039/c9sm00760a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
During the past decade, deep eutectic solvents (DESs) have shown promising application in the self-assembly of surfactants. Various aggregates such as micelles, vesicles, lyotropic liquid crystals, microemulsions and gels have been reported. In this research, the phase behaviours of imidazolium surface active ionic liquids (SAILs) CnmimBr (n = 12, 14, 16) were investigated in ChG. With the help of small angle X-ray scattering (SAXS), the types and structure parameters of aggregates were determined. The molecular packing of SAILs was influenced by the solvophobic chain length, surfactant concentration, temperature and solvent, accounting for their different aggregation behaviours. This study would give a good description of the molecular packing of surfactants in DESs.
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Affiliation(s)
- Qintang Li
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China.
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15
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Ali S, Badshah A, Hussain H, Fatima S, Shah AH, Shah A, Saifullah S, Shah MR. Synthesis, Characterization, and Computational Study of New Ferrocene‐Based Schiff Bases as Potential Nonionic Surfactants. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shazaib Ali
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Amin Badshah
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Hamid Hussain
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Saira Fatima
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Aamir Hassan Shah
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Afzal Shah
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
| | - Salim Saifullah
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS)University of Karachi Karachi Pakistan
| | - Muhammad Raza Shah
- H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS)University of Karachi Karachi Pakistan
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Li X, Li Q, Lei N, Chen X. Luminescent Sodium Deoxycholate Ionogel Induced by Eu 3+ in Ethylammonium Nitrate. ACS OMEGA 2019; 4:2437-2444. [PMID: 31459482 PMCID: PMC6648304 DOI: 10.1021/acsomega.8b03555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 01/17/2019] [Indexed: 06/10/2023]
Abstract
Hydrogels based on bile salts and lanthanide ions have been reported for their easy gelation. However, the weak mechanical properties and water quenching to luminescence of lanthanide ions limit their applications in practice. Hence, a supramolecular ionogel has been prepared here through simply mixing of sodium deoxycholate and europium nitrate in a protic ionic liquid, ethylammonium nitrate (EAN). The prepared ionogel was characterized by scanning electron microscopy, X-ray energy-dispersive spectroscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, fluorescence spectroscopy, and rheological measurements. Such an ionogel resulted synergistically from metal coordination and hydrogen bonding. The effect of the solvent structure on gel properties was also explored by comparison with those formed in alkylammonium nitrates with longer chains. EAN was found to behave more effectively both as a solvent and a bridge to enhance the ionogel mechanical strength. The ionogels also exhibited better fluorescent properties than those of the corresponding hydrogels. The obtained results should expand the applications of lanthanide-containing luminescent soft materials in nonaqueous media. It is expected to apply in the fields of solid electrolytes, biosensors, and optics response.
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Affiliation(s)
- Xueyuan Li
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Qintang Li
- State
Key Laboratory of Environmental Friendly Energy Materials, School
of Materials Science and Engineering, Southwest
University of Science and Technology, Mianyang 621010, China
| | - Nana Lei
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Xiao Chen
- Key
Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
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Zhu H, Vijayaraghavan R, MacFarlane DR, Forsyth M. Self-assembled structure and dynamics of imidazolium-based protic salts in water solution. Phys Chem Chem Phys 2019; 21:2691-2696. [PMID: 30657496 DOI: 10.1039/c8cp07254j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Protic ionic liquids containing cations with long alkyl chains can form self-assembled micelles, vesicles, microemulsions, and lyotropic liquid crystal structures in water, acid water or tetrahydrofuran, etc. As a result of this unique property, they are regarded as a novel category of amphiphiles, and are gaining importance in the field of colloid and interface chemistry. The critical micelle concentration (CMC) of protic salts, e.g., alkyl-ammonium nitrates in water, was found to increase with decreasing chain length. It is generally believed that a long alkyl chain length is essential for the formation of self-assembled structures. So far, no self-assembled structure has been reported for protic ionic liquids with an alkyl chain length of n < 4. This paper reports on the structure and dynamics of two imidazolium based protic organic salts with no alkyl chain or a methyl group (n = 1) attached to the cation in water solution, determined through a detailed analysis of NMR spectra and pulsed-field gradient NMR data. We demonstrate that these imidazolium cations with no or a short alkyl chain (n = 1) can form a self-assembled clustering structure in water solution, which has a strong influence on the diffusion behavior of imidazolium molecular ions. It is speculated that this self-assembled structure is likely to be present in other similar solutions of ionic liquids with short alkyl chains.
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Affiliation(s)
- Haijin Zhu
- Institute for Frontier Materials, Deakin University, 75 Pigdons Rd, Geelong, Victoria 3216, Australia.
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18
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Vaid ZS, Rajput SM, Shah A, Kadam Y, Kumar A, El Seoud OA, Mata JP, Malek NI. Salt-Induced Microstructural Transitions in Aqueous Dispersions of Ionic-Liquids-Based Surfactants. ChemistrySelect 2018. [DOI: 10.1002/slct.201800041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zuber S. Vaid
- Applied Chemistry Department; S.V.National Institute of Technology; Surat-395007 Gujarat India
| | - Sargam M. Rajput
- Applied Chemistry Department; S.V.National Institute of Technology; Surat-395007 Gujarat India
| | - Ankit Shah
- Applied Chemistry Department; S.V.National Institute of Technology; Surat-395007 Gujarat India
| | - Yogesh Kadam
- Applied Chemistry Department; S.V.National Institute of Technology; Surat-395007 Gujarat India
| | - Arvind Kumar
- Salt and Marine Chemicals Division; CSIR-Central Salt and Marine Chemicals; Research Institute, G. B. Marg; Bhavnagar-364002 India
| | - Omar A. El Seoud
- Institute of Chemistry; The University of São Paulo, P. O. Box 26077; 05513-970 São Paulo, SP Brazil
| | - Jitendra P. Mata
- Australian Centre for Neutron Scattering; Australian Nuclear Science and Technology Organization (ANSTO); Locked Bag 2001, Kirrawee D.C. NSW 2232 Australia
| | - Naved I. Malek
- Applied Chemistry Department; S.V.National Institute of Technology; Surat-395007 Gujarat India
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Kaur M, Singh G, Kumar S, Navnidhi, Kang TS. Thermally stable microemulsions comprising imidazolium based surface active ionic liquids, non-polar ionic liquid and ethylene glycol as polar phase. J Colloid Interface Sci 2018; 511:344-354. [DOI: 10.1016/j.jcis.2017.10.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/05/2017] [Accepted: 10/06/2017] [Indexed: 11/30/2022]
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20
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Panda S, Kundu K, Basaiahgari A, Singh AP, Senapati S, Gardas RL. Aggregation behaviour of biocompatible choline carboxylate ionic liquids and their interactions with biomolecules through experimental and theoretical investigations. NEW J CHEM 2018. [DOI: 10.1039/c8nj00336j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The self-assembly of long-chain choline carboxylates accompanied by their interaction with BSA protein were investigated with focus on environmental sustainability.
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Affiliation(s)
- Somenath Panda
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Kaushik Kundu
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Anusha Basaiahgari
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Akhil Pratap Singh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
- Department of Biotechnology
| | - Sanjib Senapati
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Ramesh L. Gardas
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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21
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Affiliation(s)
- Kun Dong
- State Key Laboratory of Multiphase
Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process,
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaomin Liu
- State Key Laboratory of Multiphase
Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process,
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Haifeng Dong
- State Key Laboratory of Multiphase
Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process,
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiangping Zhang
- State Key Laboratory of Multiphase
Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process,
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Suojiang Zhang
- State Key Laboratory of Multiphase
Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process,
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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22
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Lin W, Yang Z, Wang J, Chen T, Shi X. Wormlike micelles with pH-induced rheological property formed by cationic surfactant/anthranilic acid mixed aqueous solution. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.10.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Wu A, Lu F, Sun P, Gao X, Shi L, Zheng L. Photoresponsive Self-Assembly of Surface Active Ionic Liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8163-8170. [PMID: 27445115 DOI: 10.1021/acs.langmuir.6b01937] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A novel photoresponsive surface active ionic liquid (SAIL) 1-(4-methyl azobenzene)-3-tetradecylimidazolium bromide ([C14mimAzo]Br) with azobenzene located in the headgroup was designed. Reversible vesicle formation and rupture can be finely controlled by photostimuli without any additives in the aqueous solution of the single-tailed ionic liquid. The photoisomerization of the azobenzene derivative was investigated by (1)H NMR and UV-vis spectroscopy. Density functional theory (DFT) calculations further demonstrate that trans-[C14mimAzo]Br has less negative interaction energy, which is beneficial to aggregate formation in water. The incorporation of trans-azobenzene group increases the hydrophobicity of the headgroup and reduces the electrostatic repulsion by delocalization of charge, which are beneficial to the formation of vesicles. However, the bend of cis-azobenzene makes the cis-isomers have no ability to accumulate tightly, which induces the rupture of vesicles. Our work paves a convenient way to achieve controlled topologies and self-assembly of single SAIL.
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Affiliation(s)
- Aoli Wu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Fei Lu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Panpan Sun
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Xinpei Gao
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Lijuan Shi
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology , Taiyuan 030024, China
| | - Liqiang Zheng
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
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24
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Singh G, Singh G, Kang TS. Micellization Behavior of Surface Active Ionic Liquids Having Aromatic Counterions in Aqueous Media. J Phys Chem B 2016; 120:1092-105. [DOI: 10.1021/acs.jpcb.5b09688] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gurbir Singh
- Department of Chemistry,
UGC-Centre for Advance Studies II, Guru Nanak Dev University, Amritsar, 143005, India
| | - Gagandeep Singh
- Department of Chemistry,
UGC-Centre for Advance Studies II, Guru Nanak Dev University, Amritsar, 143005, India
| | - Tejwant Singh Kang
- Department of Chemistry,
UGC-Centre for Advance Studies II, Guru Nanak Dev University, Amritsar, 143005, India
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25
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Lépori CMO, Correa NM, Silber JJ, Falcone RD. How the cation 1-butyl-3-methylimidazolium impacts the interaction between the entrapped water and the reverse micelle interface created with an ionic liquid-like surfactant. SOFT MATTER 2016; 12:830-844. [PMID: 26542472 DOI: 10.1039/c5sm02421h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The behavior of the interfacial water entrapped in reverse micelles (RMs) formed by the ionic liquid-like surfactant 1-butyl-3-methylimidazolium 1,4-bis-2-ethylhexylsulfosuccinate (bmim-AOT) dissolved in benzene (or chlorobenzene) was investigated using noninvasive techniques such as dynamic light scattering (DLS), static light scattering (SLS), FT-IR and (1)H NMR. The DLS and SLS results reveal the formation of discrete spherical and non-interacting water droplets stabilized by the bmim-AOT surfactant. Moreover, since the droplet size increases as the W0 (W0 = [water]/[surfactant]) value increases, water interacts with the RM interface. From FT-IR and (1)H NMR data, a weaker water-surfactant interaction in bmim-AOT RMs in comparison with the RMs created by sodium 1,4-bis-2-ethylhexylsulfosuccinate (Na-AOT) is detected. Consequently, there are less water molecules interacting with the interface in bmim-AOT RMs, and their hydrogen bond network is not completely disrupted as they are in Na-AOT RMs. The results show how the nature of the new cation impacts the interaction between the entrapped water and the RM interface, modifying the interfacial water structure in comparison with the results known for Na-AOT.
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Affiliation(s)
- Cristian M O Lépori
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3, C.P. X5804BYA Río Cuarto, Argentina.
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26
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Bardhan S, Kundu K, Kar B, Chakraborty G, Ghosh D, Sarkar D, Das S, Senapati S, Saha SK, Paul BK. Synergistic interactions of surfactant blends in aqueous medium are reciprocated in non-polar medium with improved efficacy as a nanoreactor. RSC Adv 2016. [DOI: 10.1039/c6ra06776j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Efficient soft chemical nanoreactors: a design strategy to improve the performance of a model C–C cross coupling (Heck) reaction under nanoscopic confinement of surfactant blends.
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Affiliation(s)
- Soumik Bardhan
- Department of Chemistry
- University of North Bengal
- Darjeeling-734 013
- India
| | - Kaushik Kundu
- Surface and Colloid Science Laboratory
- Geological Studies Unit
- Indian Statistical Institute
- Kolkata-700 108
- India
| | - Barnali Kar
- Department of Chemistry
- University of North Bengal
- Darjeeling-734 013
- India
| | - Gulmi Chakraborty
- Department of Chemistry
- University of North Bengal
- Darjeeling-734 013
- India
| | - Dibbendu Ghosh
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Debayan Sarkar
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Sajal Das
- Department of Chemistry
- University of North Bengal
- Darjeeling-734 013
- India
| | - Sanjib Senapati
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Swapan K. Saha
- Department of Chemistry
- University of North Bengal
- Darjeeling-734 013
- India
| | - Bidyut K. Paul
- Surface and Colloid Science Laboratory
- Geological Studies Unit
- Indian Statistical Institute
- Kolkata-700 108
- India
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27
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Sun P, Shi L, Lu F, Zheng L. Aggregation behavior of zwitterionic surface active ionic liquids with different counterions, cations, and alkyl chains. RSC Adv 2016. [DOI: 10.1039/c6ra02986h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of anionic type, cationic structure and alkyl chain length are illustrated to regulate the self-assembly of zwitterionic SAILs.
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Affiliation(s)
- Panpan Sun
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Lijuan Shi
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Fei Lu
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Liqiang Zheng
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan 250100
- China
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28
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Banerjee C, Roy A, Kundu N, Banik D, Sarkar N. A new strategy to prepare giant vesicles from surface active ionic liquids (SAILs): a study of protein dynamics in a crowded environment using a fluorescence correlation spectroscopic technique. Phys Chem Chem Phys 2016; 18:14520-30. [DOI: 10.1039/c5cp07225e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A simple procedure for the preparation of giant vesicles using surface active ionic liquids (SAILs) has been provided in this paper.
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Affiliation(s)
- Chiranjib Banerjee
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Arpita Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Niloy Kundu
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Debasis Banik
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Nilmoni Sarkar
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
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29
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Bahadur I, Kgomotso M, Ebenso EE, Redhi G. Influence of temperature on molecular interactions of imidazolium-based ionic liquids with acetophenone: thermodynamic properties and quantum chemical studies. RSC Adv 2016. [DOI: 10.1039/c6ra15476j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The thermophysical properties of a series of alkyl imidazolium-based ionic liquids with acetophenone over the wide range of composition and at (293.15, 303.15, 313.15, 323.5 and 333.15) K under atmospheric pressure is reported in this study.
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Affiliation(s)
- Indra Bahadur
- Department of Chemistry and Materials Science Innovation
- Modelling Research Focus Area
- School of Mathematical and Physical Sciences
- Faculty of Agriculture, Science and Technology
- North-West University (Mafikeng Campus)
| | - Masilo Kgomotso
- Department of Chemistry and Materials Science Innovation
- Modelling Research Focus Area
- School of Mathematical and Physical Sciences
- Faculty of Agriculture, Science and Technology
- North-West University (Mafikeng Campus)
| | - Eno E. Ebenso
- Department of Chemistry and Materials Science Innovation
- Modelling Research Focus Area
- School of Mathematical and Physical Sciences
- Faculty of Agriculture, Science and Technology
- North-West University (Mafikeng Campus)
| | - Gan Redhi
- Department of Chemistry
- Durban University of Technology
- Durban
- South Africa
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30
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Jin Y, Wang L, Wang T, Chen P, Bi Y, Yu L. Aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.08.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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You Q, Zhang Y, Wang H, Fan H, Guo J, Li M. The Formation of pH-Sensitive Wormlike Micelles in Ionic Liquids Driven by the Binding Ability of Anthranilic Acid. Int J Mol Sci 2015; 16:28146-55. [PMID: 26703567 PMCID: PMC4691043 DOI: 10.3390/ijms161226096] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Revised: 11/16/2015] [Accepted: 11/20/2015] [Indexed: 11/27/2022] Open
Abstract
Wormlike micelles are typically formed by mixing cationic and anionic surfactants because of attractive interactions in oppositely charged head-groups. The structural transitions of wormlike micelles triggered by pH in ionic liquids composed of N-alkyl-N-methylpyrrolidinium bromide-based ILs (ionic liquids) and anthranilic acid were investigated. These structures were found responsible for the variations in flow properties identified by rheology and dynamic light scattering, and account for the structures observed with cryogenic transmission electron microscopy (Cryo-TEM). High-viscosity, shear-thinning behavior, and Maxwell-type dynamic rheology shown by the system at certain pH values suggested that spherical micelles grow into entangled wormlike micelles. Light scattering profiles also supported the notion of pH-sensitive microstructural transitions in the solution. Cryo-TEM images confirmed the presence of spherical micelles in the low-viscosity sample and entangled wormlike micelles in the peak viscosity sample. Nuclear magnetic resonance spectroscopy analysis revealed that the pH sensitivity of ionic liquid systems originated from the pH-dependent binding ability of anthranilic acid to the cationic headgroup of ionic liquids.
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Affiliation(s)
- Qing You
- School of Energy Resources, China University of Geosciences, Beijing 100083, China.
| | - Yan Zhang
- School of Energy Resources, China University of Geosciences, Beijing 100083, China.
| | - Huan Wang
- School of Energy Resources, China University of Geosciences, Beijing 100083, China.
| | - Hongfu Fan
- School of Energy Resources, China University of Geosciences, Beijing 100083, China.
| | - Jianping Guo
- School of Energy Resources, China University of Geosciences, Beijing 100083, China.
| | - Ming Li
- Sinopec Shengli Oilfield Research Institute of Petroleum Engineering, Dongying 257000, China.
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32
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Xu W, Yin Q, Gao Y, Yu L. Solvent and Substituent Effects on the Aggregation Behavior of Surface-Active Ionic Liquids with Aromatic Counterions and the Dispersion of Carbon Nanotubes in their Hexagonal Liquid Crystalline Phase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12644-12652. [PMID: 26549825 DOI: 10.1021/acs.langmuir.5b03586] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aggregation behavior of surface-active ionic liquids (SAILs) 1-dodecyl-3-methylimidazolium m- and p-hydroxybenzoate (m-C12mimHB and p-C12mimHB) in water and ethylammonium nitrate (EAN) was investigated. Surface tension measurements indicate that the cmc values of SAILs in EAN are much higher than those in water, resulting from the weaker solvophobic effect of EAN, and the stronger stability of SAILs/EAN complexes proven by DFT calculations. Compared to 1-dodecyl-3-methylimidazolium salicylate (C12mimSal), the effect of substituent position leads to weaker interactions between aromatic counterions and headgroups. The hexagonal liquid crystal (H1) phase formed by C12mimHB in water or EAN at a higher concentration was determined by polarized optical microscopy (POM), small-angle X-ray scattering (SAXS), and rheology techniques. Structural parameters estimated from SAXS curves suggest that the higher SAILs concentration or temperature leads to a smaller lattice parameter (a0) and a denser arrangement of cylinders. For C12mimHB, the formation of the H1 phase in H2O is easier than that in EAN. Furthermore, compared to C12mimSal, C12mimHB exists over a broad region of the hexagonal liquid crystalline (H1) phase, which is due to the different position of the substituents on the aromatic ring of counterions. Therefore, the H1 phase of the lypotropic liquid crystals (LLCs) formed in the C12mimHB/H2O system exhibits excellent performance in uniformly dispersing multiwalled carbon nanotubes (MWCNTs). Increasing the concentration of MWCNTs results in a larger lattice parameter (a0) value, indicating the integration of MWCNTs within the cylinders of the H1 phase. The rheological measurement results demonstrate that MWCNTs/LLCs composites are highly viscoelastic, and the presence of MWCNTs obviously strengthens the apparent viscosity of the H1 phase.
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Affiliation(s)
- Wenwen Xu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, PR China
- School of Chemistry and Chemical Engineering, Qufu Normal University , Qufu 273165, PR China
| | - Qiwen Yin
- China Research Institute of Daily Chemical Industry, Taiyuan 030001, PR China
| | - Yan'an Gao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, PR China
| | - Li Yu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, PR China
- School of Chemistry and Chemical Engineering, Qufu Normal University , Qufu 273165, PR China
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33
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Greaves TL, Drummond CJ. Protic Ionic Liquids: Evolving Structure-Property Relationships and Expanding Applications. Chem Rev 2015; 115:11379-448. [PMID: 26426209 DOI: 10.1021/acs.chemrev.5b00158] [Citation(s) in RCA: 498] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tamar L Greaves
- School of Applied Sciences, College of Science, Engineering and Health, RMIT University , GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Calum J Drummond
- School of Applied Sciences, College of Science, Engineering and Health, RMIT University , GPO Box 2476, Melbourne, Victoria 3001, Australia
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34
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Yan Z, Dai C, Zhao M, Zhao G, Li Y, Wu X, Du M, Liu Y. pH-switchable wormlike micelle formation by N-alkyl-N-methylpyrrolidinium bromide-based cationic surfactant. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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35
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Wang G, Li P, Du Z, Wang W, Li G. Surface Activity and Aggregation Behavior of Siloxane-Based Ionic Liquids in Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8235-8242. [PMID: 26172585 DOI: 10.1021/acs.langmuir.5b02062] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Six novel siloxane-based surface-active ionic liquids (SAILs)--siloxane ammonium carboxylate [Si(n)N(2)-CA(1), (n = 3, 4)]--were designed and synthesized. Their melting points, surface activities, and self-aggregation behavior in aqueous solution were studied. The results showed that because of the bulky hydrophobic siloxane chains at the end of the tail, all six siloxane-based SAILs are room-temperature ionic liquids (RT-SAILs). The introduction of the siloxane group can reduce the melting point of ionic liquids to below room temperature and can promote the micellization and aggregation behavior more efficiently. These siloxane-based SAILs can greatly reduce the surface tension of water, as shown by the critical aggregation concentration (γCAC) values of 20 mN·m(-1); all six siloxane RT-SAILs can form a vesicle spontaneously in aqueous solution, indicating potential uses as model systems for biomembranes and vehicles for drug delivery.
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Affiliation(s)
- Guoyong Wang
- †China Research Institute of Daily Chemical Industry, Taiyuan Shanxi 030001, P.R. China
| | - Ping Li
- †China Research Institute of Daily Chemical Industry, Taiyuan Shanxi 030001, P.R. China
| | - Zhiping Du
- †China Research Institute of Daily Chemical Industry, Taiyuan Shanxi 030001, P.R. China
- ‡Institute of Resources and Environment Engineering, Shanxi University, Taiyuan Shanxi 030006, P.R. China
| | - Wanxu Wang
- †China Research Institute of Daily Chemical Industry, Taiyuan Shanxi 030001, P.R. China
| | - Guojin Li
- †China Research Institute of Daily Chemical Industry, Taiyuan Shanxi 030001, P.R. China
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36
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Yan Z, Dai C, Zhao M, Zhao G, Li Y, Wu X, Liu Y, Du M. Multi-Responsive Wormlike Micelles Based on N-alkyl-N-Methylpiperidinium Bromide Cationic Surfactant. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1718-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Fileti EE, Chaban VV. The force field for imidazolium-based ionic liquids: Novel anions with polar residues. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.05.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Thermal and pH dual stimulated wormlike micelle in aqueous N-cetyl-N-methylpyrrolidinium bromide cationic surfactant-aromatic dibasic acid system. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3655-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Bi Y, Wei H, Hu Q, Xu W, Gong Y, Yu L. Wormlike micelles with photoresponsive viscoelastic behavior formed by surface active ionic liquid/azobenzene derivative mixed solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3789-3798. [PMID: 25763685 DOI: 10.1021/acs.langmuir.5b00107] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The UV-light-stimulated self-assembly behavior of a surface active ionic liquid (SAIL), 1-hexadecyl-3-methylimidazolium bromide (C16mimBr), with an azobenzene derivative, sodium azobenzene 4-carboxylate (AzoCOONa), was investigated in aqueous solution. The properties and structures of the aggregates, formed at a concentration ratio equal to 2:1 ([C16mimBr]:[AzoCOONa]), were comprehensively characterized by rheometer and cryogenic transmission electron microscopy. Initially, viscoelastic wormlike micelles with a viscosity of 0.65 Pa·s were constructed in the C16mimBr/AzoCOONa system. Upon irradiation by UV light (365 nm), particularly fascinating is that the wormlike micelles become much longer and more entangled, exhibiting a high viscosity of 6.9 Pa·s. This can be attributed to photoisomerization of the AzoCOONa molecule from trans to cis form. It is the first time that, with exposure to UV or visible light, the aggregate type of the photoresponsive system has remained unchanged, with only a change of internal property parameters. The cation-π interaction prevailing over the hydrophobic interaction and electrostatic interaction between C16mimBr and AzoCOONa molecules is supposed to be responsible for this peculiar phase behavior. The wormlike micelles constructed with the SAIL and photosensitive additive exhibit controllable viscoelastic behavior in the photoresponsive process. In addition, the average contour length of wormlike micelles was found to slightly decrease with the increase of temperature. We expect this system will receive particular attention due to its unique properties and potential applications in drug delivery, biochemistry, and materials science, etc.
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Affiliation(s)
- Yanhui Bi
- †Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China
| | - Hongtu Wei
- ‡China Research Institute of Daily Chemical Industry, Taiyuan 030001, People's Republic of China
| | - Qiongzheng Hu
- §Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Wenwen Xu
- †Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China
| | - Yanjun Gong
- †Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China
| | - Li Yu
- †Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, People's Republic of China
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40
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Phase behavior of a nonaqueous ternary microemulsion containing ethylammonium nitrate, TX-100, and cyclohexane. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3525-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Chaban VV, Fileti EE. Ionic Clusters vs Shear Viscosity in Aqueous Amino Acid Ionic Liquids. J Phys Chem B 2015; 119:3824-8. [DOI: 10.1021/acs.jpcb.5b00392] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vitaly V. Chaban
- Instituto de Ciência
e Tecnologia, Universidade Federal de São Paulo, 12247-014, São José dos Campos, SP, Brazil
| | - Eudes Eterno Fileti
- Instituto de Ciência
e Tecnologia, Universidade Federal de São Paulo, 12247-014, São José dos Campos, SP, Brazil
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42
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Xu W, Wang T, Cheng N, Hu Q, Bi Y, Gong Y, Yu L. Experimental and DFT studies on the aggregation behavior of imidazolium-based surface-active ionic liquids with aromatic counterions in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1272-1282. [PMID: 25580540 DOI: 10.1021/la503884v] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two imidazolium-based surface-active ionic liquids with aromatic counterions, namely, 1-dodecyl-3-methylimidazolium salicylate (C12mimSal) and 1-dodecyl-3-methylimidazolium 3-hydroxy-2-naphthoate (C12mimHNC), were synthesized, and their aggregate behavior in aqueous solutions was systematically explored. Surface tension and conductivity measurements indicate that both C12mimSal and C12mimHNC show superior surface activity compared to the common imidazolium-based SAIL with the same hydrocarbon chain length, 1-dodecyl-3-methylimidazolium bromide (C12mimBr). This result demonstrates that the incorporation of aromatic counterions favors the formation of micelles. C12mimHNC displays a higher surface activity than C12mimSal, resulting from the different hydrophobicities of the counterions. In comparison with C12mimBr, C12mimSal not only can form hexagonal liquid-crystalline phase (H1) in aqueous solution, but also exhibits a broad region of cubic liquid-crystalline phase (V2) at higher concentration. As for the C12mimHNC/H2O system, a lamellar liquid-crystalline (L(α)) phase was observed. These lyotropic liquid crystals (LLCs) were characterized by polarized optical microscopy (POM) and small-angle X-ray scattering (SAXS). Structural parameters calculated from SAXS patterns suggest that a higher concentration of the SAIL leads to a denser arrangement whereas a higher temperature results in the opposite effect. The rheological results manifest that the formed H1 phase in the C12mimSal/H2O system exhibits an impressive viscoelastic behavior, indicated by a modulus (G' and G″) that is 1 order of magnitude higher than that of C12mimBr. Density functional theory (DFT) calculations reveal that C12mimSal has a more negative interaction energy with a water molecule and the Sal(-) counterion presents a stronger electronegativity than the HNC(-) counterion. The specific phase behavior of the C12mimSal/H2O and C12mimHNC/H2O systems can be attributed to the strong synergic interaction between the imidazolium cation and the aromatic counterion, including electrostatic attraction, hydrophobic interaction, and especially π-π interaction.
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Affiliation(s)
- Wenwen Xu
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, P. R. China
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43
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Gou S, Yin T, Xia Q, Guo Q. Biodegradable polyethylene glycol-based ionic liquids for effective inhibition of shale hydration. RSC Adv 2015. [DOI: 10.1039/c5ra02236c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the synthesis of biodegradable polyethylene glycol-based ionic liquids which exhibit potential capability for inhibiting shale hydration.
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Affiliation(s)
- Shaohua Gou
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University
- Chengdu
- China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
| | - Ting Yin
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Qiang Xia
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- China
| | - Qipeng Guo
- Polymers Research Group
- Institute for Frontier Materials
- Deakin University
- Geelong
- Australia
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44
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Bharmoria P, Trivedi TJ, Pabbathi A, Samanta A, Kumar A. Ionic liquid-induced all-α to α + β conformational transition in cytochrome c with improved peroxidase activity in aqueous medium. Phys Chem Chem Phys 2015; 17:10189-99. [DOI: 10.1039/c4cp06044j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Choline dioctylsulfosuccinate [Cho][AOT] (a surface active ionic liquid) has been found to induce all-α to α + β conformational transition in the secondary structure of enzyme cytochrome c (Cyt c) with an enhanced peroxidase activity in its aqueous vesicular phase at pH 7.0.
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Affiliation(s)
- Pankaj Bharmoria
- Academy of Scientific and Innovative research (AcSIR)
- Central Salt and Marine Chemicals Research Institute
- Council of Scientific and Industrial Research (CSIR)
- Bhavnagar-364002
- India
| | - Tushar J. Trivedi
- Graduate School of EEWS (Energy Environment Water Sustainability)
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Ashok Pabbathi
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
| | - Anunay Samanta
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
| | - Arvind Kumar
- Academy of Scientific and Innovative research (AcSIR)
- Central Salt and Marine Chemicals Research Institute
- Council of Scientific and Industrial Research (CSIR)
- Bhavnagar-364002
- India
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45
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Dai C, Du M, Liu Y, Wang S, Zhao J, Chen A, Peng D, Zhao M. Aggregation behavior of long-chain piperidinium ionic liquids in ethylammonium nitrate. Molecules 2014; 19:20157-69. [PMID: 25474288 PMCID: PMC6271972 DOI: 10.3390/molecules191220157] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 11/07/2014] [Accepted: 11/21/2014] [Indexed: 11/16/2022] Open
Abstract
Micelles formed by the long-chain piperidinium ionic liquids (ILs) N-alkyl-N-methylpiperidinium bromide of general formula CnPDB (n = 12, 14, 16) in ethylammonium nitrate (EAN) were investigated through surface tension and dissipative particle dynamics (DPD) simulations. Through surface tension measurements, the critical micelle concentration (cmc), the effectiveness of surface tension reduction (Πcmc), the maximum excess surface concentration (Гmax) and the minimum area occupied per surfactant molecule (Amin) can be obtained. A series of thermodynamic parameters (DG0 m, DH0 m and DS0 m) of micellization can be calculated and the results showed that the micellization was entropy-driven. In addition, the DPD simulation was performed to simulate the whole aggregation process behavior to better reveal the micelle formation process.
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Affiliation(s)
- Caili Dai
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Mingyong Du
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Yifei Liu
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Shilu Wang
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Jianhui Zhao
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Ang Chen
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Dongxu Peng
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
| | - Mingwei Zhao
- State Key Laboratory of Heavy Oil Processing, School of Petroleum Engineering, China University of Petroleum (Huadong), Qingdao 266580, Shandong, China.
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46
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Bharmoria P, Mehta MJ, Pancha I, Kumar A. Structural and Functional Stability of Cellulase in Aqueous-Biamphiphilic Ionic Liquid Surfactant Solution. J Phys Chem B 2014; 118:9890-9. [DOI: 10.1021/jp506211b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pankaj Bharmoria
- Academy of Scientific and Innovative Research (AcSIR) and ‡Salt and Marine Chemical Discipline, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India
| | - Mohit J. Mehta
- Academy of Scientific and Innovative Research (AcSIR) and ‡Salt and Marine Chemical Discipline, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India
| | - Imran Pancha
- Academy of Scientific and Innovative Research (AcSIR) and ‡Salt and Marine Chemical Discipline, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India
| | - Arvind Kumar
- Academy of Scientific and Innovative Research (AcSIR) and ‡Salt and Marine Chemical Discipline, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India
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47
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Rather MA, Rather GM, Pandit SA, Bhat SA, Bhat MA. Determination of cmc of imidazolium based surface active ionic liquids through probe-less UV-vis spectrophotometry. Talanta 2014; 131:55-8. [PMID: 25281072 DOI: 10.1016/j.talanta.2014.07.046] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/15/2014] [Accepted: 07/18/2014] [Indexed: 10/25/2022]
Abstract
In the first of its kind we herein report the results of our studies undertaken on the micellization behaviour of imidazolium based surface active ionic liquids (SAILs) to prove that their critical micelle concentration (cmc) can be estimated through ultraviolet-visible (UV-vis) spectroscopy without using any external probe. Tensiometric and spectrophotometric investigations of a series of freshly prepared SAILs viz. 1-octyl-3-methylimidazolium chloride ([OMIM][Cl]), 1-octyl-3-methylimidazolium dodecylsulphate ([OMIM][DS]), 1-octyl-3-methylimidazolium benzoate ([OMIM][Bz]), 1-octyl-3-methylimidazolium salicylate ([OMIM][Sc]), 1-octyl-3-methylimidazolium acetate ([OMIM][Ac]) are presented as a case study in support of the said claim. The cmcs estimated through spectrophotometric method were found to be close to the values estimated through tensiometry for the said SAILs. The cmcs for the investigated SAILS were found to vary in order of [OMIM][Cl]>[OMIM][Ac]>[OMIM][Bz]>[OMIM][Sc]>[OMIM][DS]. To the best of our knowledge the present communication will be the first report about the synthesis, characterization and micellization behaviour of [OMIM][Bz] and [OMIM][Sc].
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Affiliation(s)
| | | | | | - Sajad Ahmad Bhat
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India
| | - Mohsin Ahmad Bhat
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
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