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Manna E, Barai M, Mandal MK, Sultana H, Guchhait KC, Gawali SL, Aswal VK, Ghosh C, Patra A, Misra AK, Yusa SI, Hassan PA, Panda AK. Impact of Ionic Liquids on the Physicochemical Behavior of Vesicles. J Phys Chem B 2024. [PMID: 38959082 DOI: 10.1021/acs.jpcb.4c01455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
The effects of two ionic liquids (ILs), 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4) and 1-butyl-1-methyl pyrrolidinium tetrafluoroborate ([bmp]BF4), on a mixture of phospholipids (PLs) 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC), 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE), and 1,2-dipalmitoyl-sn-glycero-3-phosphoglycerol (DPPG) (6:3:1, M/M/M, 70% PL) in combination with 30 mol % cholesterol (CHOL) were investigated in the form of a solvent-spread monolayer and bilayer (vesicle). Surface pressure (π)-area (A) isotherm studies, using a Langmuir surface balance, revealed the formation of an expanded monolayer, while the cationic moiety of the IL molecules could electrostatically and hydrophobically bind to the PLs on the palisade layer. Turbidity, dynamic light scattering (size, ζ-potential, and polydispersity index), electron microscopy, small-angle X-ray/neutron scattering, fluorescence spectroscopy, and differential scanning calorimetric studies were carried out to evaluate the effects of IL on the structural organization of bilayer in the vesicles. The ILs could induce vesicle aggregation by acting as a "glue" at lower concentrations (<1.5 mM), while at higher concentrations, the ILs disrupt the bilayer structure. Besides, ILs could result in the thinning of the bilayer, evidenced from the scattering studies. Steady-state fluorescence anisotropy and lifetime studies suggest asymmetric insertion of ILs into the lipid bilayer. MTT assay using human blood lymphocytes indicates the safe application of vesicles in the presence of ILs, with a minimal toxicity of up to 2.5 mM IL in the dispersion. These results are proposed to have applications in the field of drug delivery systems with benign environmental impact.
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Affiliation(s)
- Emili Manna
- Centre for Life Sciences, Vidyasagar University, Midnapore 721102, West Bengal, India
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Manas Barai
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
- Chemistry of Interfaces Group, Luleå University of Technology, SE-97187 Luleå, Sweden
| | - Manas K Mandal
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Habiba Sultana
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Kartik C Guchhait
- Department of Human Physiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Santosh L Gawali
- Solid State Physics Division, Bhaba Atomic Research Centre, Mumbai 400085, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhaba Atomic Research Centre, Mumbai 400085, India
| | - Chandradipa Ghosh
- Department of Human Physiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Anuttam Patra
- Chemistry of Interfaces Group, Luleå University of Technology, SE-97187 Luleå, Sweden
| | - Ajay K Misra
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Shin-Ichi Yusa
- Department of Applied Chemistry,Graduate School of Engineering, University of Hyogo, Himeji, Hyogo 671-2280, Japan
| | | | - Amiya K Panda
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
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2
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Pan Y, Tong K, Lin M, Zhuang W, Zhu W, Chen X, Li Q. Aggregation behaviours of sulfobetaine zwitterionic surfactants in EAN. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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4
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Effect of Water and Salt on the Colloidal Stability of Latex Particles in Ionic Liquid Solutions. COLLOIDS AND INTERFACES 2021. [DOI: 10.3390/colloids6010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The colloidal stability of sulfate (SL) and polyimidazolium-modified sulfate (SL-IP-2) latex particles was studied in an ionic liquid (IL) of ethylammonium nitrate (EAN) and its water mixtures. Aggregation rates were found to vary systematically as a function of the IL-to-water ratio. Repulsive electrostatic interactions between particles dominated at low IL concentrations, while they were significantly screened at intermediate IL concentrations, leading to destabilization of the dispersions. When the IL concentration was further increased, the aggregation of latex particles slowed down due to the increased viscosity and finally, a striking stabilization was observed in the IL-rich regime close to the pure IL solvent. The latter stabilization is due to the formation of IL layers at the interface between particles and IL, which induce repulsive oscillatory forces. The presence of the added salt in the system affected differently the structure of the interfaces around SL and SL-IP-2 particles. The sign of the charge and the composition of the particle surfaces were found to be the most important parameters affecting the colloidal stability. The nature of the counterions also plays an important role in the interfacial properties due to their influence on the structure of the IL surface layers. No evidence was observed for the presence of long-range electrostatic interactions between the particles in pure ILs. The results indicate that the presence of even low concentrations of water and salt in the system (as undesirable impurities) can strongly alter the interfacial structure and thus, the aggregation mechanism in particle IL dispersions.
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Żywociński A, Bernatowicz P, Pociecha D, Górecka E, Gregorowicz J. Investigation of the aggregation behaviour of the anionic surfactant sodium dodecyl sulfate in ionic liquids 1-allyl-3-methylimidazolium chloride and 1-Ethyl-3-methylimidazolium diethyl phosphate. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Zhuang W, Zhao C, Pan Y, Li Q. Self-assembly of an imidazolium surfactant in aprotic ionic liquids. 2. More than solvents. SOFT MATTER 2021; 17:3494-3502. [PMID: 33657203 DOI: 10.1039/d1sm00039j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As tailorable solvents, the physiochemical properties of ionic liquids can be tuned by the structure of ions. Herein, we investigate the structural effects of ILs on the self-assembly of surfactants. It has been confirmed that the cationic surfactant 1-hexadecyl-3-methylimidazolium bromide (C16mimBr) can self-assemble into micellar and lamellar lyotropic liquid crystal phases in the aprotic ionic liquid (AIL) 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim]BF4). In this work, we explore the aggregation behaviours in AILs with different alkyl chains on the imidazolium group, i.e., 1-propyl-3-methylimidazolium tetrafluoroborate ([Pmim]BF4), 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), 1-hexyl-3-methylimidazolium tetrafluoroborate ([Hmim]BF4) and 1-octyl-3-methylimidazolium tetrafluoroborate ([Omim]BF4). With the increase of the cation chain length, AILs have better solubility of the solvophobic part of the surfactants and hence a weaker driving force for self-assembly. Therefore, the critical micellization concentration of C16mimBr in AILs increases as confirmed by the surface tension and small angle X-ray scattering characterizations. More interesting things happen to the phase behaviours. Besides the micellar and lamellar lyotropic liquid crystal phases, a hexagonal lyotropic liquid crystal phase is formed in [Pmim]BF4 while hexagonal and bicontinuous cubic lyotropic liquid crystal phases are formed in [Bmim]BF4, [Hmim]BF4 and [Omim]BF4. It is surprising to observe richer phase behaviours in solvents of lower cohesive energy. The detailed structural information of various aggregates has been obtained by small-angle X-ray scattering. It is demonstrated that AILs work as not only solvents but also co-surfactants.
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Affiliation(s)
- Wenchang Zhuang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
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7
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8
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Synthesis and characterization of NaP zeolite nanocrystals using [C12mim][Cl] ionic liquid. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01064-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Designing Imidazolium Poly(amide-amide) and Poly(amide-imide) Ionenes and Their Interactions with Mono- and Tris(imidazolium) Ionic Liquids. Polymers (Basel) 2020; 12:polym12061254. [PMID: 32486156 PMCID: PMC7362236 DOI: 10.3390/polym12061254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/17/2022] Open
Abstract
Here we introduce the synthesis and thermal properties of a series of sophisticated imidazolium ionenes with alternating amide-amide or amide-imide backbone functionality, and investigate the structural effects of mono(imidazolium) and unprecedented tris(imidazolium) ionic liquids (ILs) in these ionenes. The new set of poly(amide-amide) (PAA) and poly(amide-imide) (PAI) ionenes represent the intersection of conventional high-performance polymers with the ionene archetype-presenting polymers with alternating functional and ionic elements precisely sequenced along the backbone. The effects of polymer composition on the thermal properties and morphology were analyzed. Five distinct polymer backbones were synthesized and combined with a stoichiometric equivalent of the IL 1-benzyl-3-methylimidazolium bistriflimide ([Bnmim][Tf2N]), which were studied to probe the self-assembly, structuring, and contributions of intermolecular forces when IL is added. Furthermore, three polyamide (PA) or polyimide (PI) ionenes with simpler xylyl linkages were interfaced with [Bnmim][Tf2N] as well as a novel amide-linked tris(imidazolium) IL, to demonstrate the structural changes imparted by the inclusion of functional, ionic additives dispersed within the ionene matrix. This work highlights the possibilities for utilizing concepts from small molecules which exhibit supramolecular self-assembly to guide creative design and manipulate the structuring of ionenes.
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Kawai R, Yada S, Yoshimura T. Surface Adsorption and Bulk Properties of Surfactants in Quaternary-Ammonium-Salt-Type Amphiphilic Monomeric and Gemini Ionic Liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5219-5226. [PMID: 32363875 DOI: 10.1021/acs.langmuir.0c00541] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The physicochemical properties of ionic liquids can be readily controlled. Currently, it is necessary to investigate the properties of different surfactants to elucidate the mixtures used in quaternary-ammonium-salt-type ionic liquids. Herein, the surface adsorption and bulk properties of homogeneous polyoxyethylene (EO)-type nonionic surfactant, quaternary-ammonium-salt-type cationic surfactant, and sulfobetaine-type zwitterionic surfactant are elucidated in quaternary-ammonium-salt-type amphiphilic monomeric ionic liquids and gemini ionic liquids with bis(fluorosulfonyl)imide or bis(trifluoromethanesulfonyl)imide as counterions. The monomeric amphiphilic ionic liquids that adsorbed at the interface were replaced with CxEOy (where x and y represent alkyl and EO chain lengths, respectively) as the concentration of CxEOy increased. On the other hand, in the gemini amphiphilic ionic liquids, the surface tensions of CxEOy were lower than those of the monomeric ionic liquids. Consequently, both gemini amphiphilic ionic liquids and CxEOy adsorbed efficiently at the interface and oriented themselves because of a synergistic effect. Furthermore, for ionic liquids with short alkyl chains, an orderly bulk nanostructure was not observed at low concentrations in CxEOy, while a layer structure formed at higher concentrations; in contrast, ionic liquids with long alkyl chains formed a layer structure. The alkyl chains, which were interlocked in the bilayer structure, resulted in a densely packed layer structure.
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Affiliation(s)
- Risa Kawai
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Shiho Yada
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Tomokazu Yoshimura
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
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Abstract
Abstract
Ionic liquids (ILs) give a wide scope of favorable applications due to their much-upgraded properties. The strong electrostatic interactions between the cationic moiety of IL and the anionic surfactant play a very important role in the assembly of the large aggregates. We have investigated the aggregation behavior of anionic surfactants and IL in aqueous solution. Different temperatures and concentrations of IL have been taken to study the effect on critical micelles concentrations of surfactant. The critical micelle concentration values obtained by conductivity measurements are further confirmed by the fluorescence studies. The method is based on the fit of the experimental obtained raw data of fluorescence spectroscopy to a simple nonlinear category of a Boltzmann type sigmoidal function. Thermodynamical parameters of micellization
Δ
H
m
0
$\Delta H_{m}^{0}$
,
Δ
G
m
0
$\Delta G_{m}^{0}$
and
Δ
S
m
0
$\Delta S_{m}^{0}$
have been considered to study the effect of aqueous IL 1-butyl-3-methylimidazolium bromide concentration and temperature on aggregation behavior of surfactant sodium dodecyl sulfate. FT-IR spectra have been studies to verify the structural changes arise in the aqueous IL and surfactant system.
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12
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Solanki SH, Patil SR. Phase behavior and microstructure of sugar surfactant-ionic liquid microemulsions. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1731528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Shehnaz H. Solanki
- School of Engineering and Technology, Navrachana University, Vadodara, India
| | - Sandeep R. Patil
- School of Engineering and Technology, Navrachana University, Vadodara, India
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Catanionic and chain-packing effects on surfactant self-assembly in the ionic liquid ethylammonium nitrate. J Colloid Interface Sci 2019; 540:515-523. [DOI: 10.1016/j.jcis.2019.01.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 11/19/2022]
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14
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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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15
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He Z, Ma Y, Alexandridis P. Comparison of ionic liquid and salt effects on the thermodynamics of amphiphile micellization in water. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.09.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Mamusa M, Arroyo MC, Fratini E, Giorgi R, Baglioni P. Nonaqueous Microemulsion in the Bmim Tf 2N/Brij 30/ n-Nonane System: Structural Investigation and Application as Gold Nanoparticle Microreactor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12609-12618. [PMID: 30261725 DOI: 10.1021/acs.langmuir.8b02420] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Microemulsions based on ionic liquids (ILs) are being increasingly studied in many different areas of physical chemistry because of the attractive properties of ILs. In particular, waterless microemulsions where the IL represents the polar phase can be of interest for those applications that demand the nanosegregation of polar substances, but in which the absence of water is a strict requirement. In this work, we prepared a reverse, nonaqueous microemulsion based on the low-viscosity room-temperature IL, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide , the surfactant Brij 30, and n-nonane. The systems were characterized by dynamic light scattering and small-angle X-ray scattering; the IL/oil microemulsion was further employed as a templating system for the synthesis of gold nanoparticles from hydrogen tetrachloroaurate(III), HAuCl4, by UV-photoreduction technique.
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Affiliation(s)
- Marianna Mamusa
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , Sesto Fiorentino, 50019 Florence , Italy
| | - Marcia C Arroyo
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , Sesto Fiorentino, 50019 Florence , Italy
| | - Emiliano Fratini
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , Sesto Fiorentino, 50019 Florence , Italy
| | - Rodorico Giorgi
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , Sesto Fiorentino, 50019 Florence , Italy
| | - Piero Baglioni
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , Sesto Fiorentino, 50019 Florence , Italy
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Deng Y, Ling J, Li MH. Physical stimuli-responsive liposomes and polymersomes as drug delivery vehicles based on phase transitions in the membrane. NANOSCALE 2018; 10:6781-6800. [PMID: 29616274 DOI: 10.1039/c8nr00923f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This paper reviews liposomes with crystalline phase and polymersomes exhibiting crystalline and thermotropic liquid crystalline phases in the membrane. Intriguing morphologies of vesicles are described, including spherical, ellipsoidal and faceted vesicles, produced by a large variety of amphiphilic molecules and polymers with nematic phase, smectic phase or crystalline phase. It is highlighted how the phase transitions and the phase grain boundaries could be used ingeniously to destabilize the vesicular structure and to achieve cargo-release under the action of external stimulation. These liposomes and polymersomes are responsive to physical stimuli, such as temperature variation, shear stress, light illumination, and magnetic and electric fields. These stimuli-responsive properties make them promising candidates as new smart drug delivery systems.
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Affiliation(s)
- Yangwei Deng
- Chimie ParisTech, PSL University Paris, CNRS, Institut de Recherche de Chimie Paris, UMR8247, 11 rue Pierre et Marie Curie, 75005 Paris, France.
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Pei Y, Hao L, Ru J, Zhao Y, Wang H, Bai G, Wang J. The self-assembly of ionic liquids surfactants in ethanolammonium nitrate ionic liquid. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.095] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Dai X, Qiang X, Gao J, Teng J, Zang H, Song H. Phase behaviors and characterization of magnetic microemulsions containing pentaalkylguanidinium-based magnetic room-temperature ionic liquids (MRTILs). NEW J CHEM 2018. [DOI: 10.1039/c8nj01049h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Strong magnetic susceptibility and low viscosity magnetic microemulsions containing pentaalkylguanidinium-based magnetic room temperature ionic liquids.
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Affiliation(s)
- Xuezhi Dai
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiaolian Qiang
- Institute of Chemical Materials
- China Academy of Engineering Physics (CAEP)
- Mianyang 621900
- China
- Department of Physical Chemistry and Centre for Nanointegration (CENIDE)
| | - Jing Gao
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Juan Teng
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Huimin Zang
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hang Song
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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Yi S, Wang J, Feng Z, Chen X. "Rigid" Luminescent Soft Materials: Europium-Containing Lyotropic Liquid Crystals Based on Polyoxyethylene Phytosterols and Ionic Liquids. J Phys Chem B 2017; 121:9302-9310. [PMID: 28876934 DOI: 10.1021/acs.jpcb.7b07653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Soft materials of europium β-diketonate complexes constructed in lyotropic liquid crystals (LLCs) mediated by ionic liquids (ILs) are impressive for their excellent luminescence performance and stability. For the aim to further improve their mechanical processability and luminescent tunablility, the polyoxyethylene phytosterols (BPS-n) were introduced here as structure directing agents to prepare relatively "rigid" lamellar luminescent LLCs in 1-butyl-3-methyl-imidazolium hexafluorophosphate by doping europium β-diketonate complexes with different imidazolium counterions. As a result of the solvophobic sterol ring structure of BPS-n, the more effective isolation and confinement effects of europium complexes could be achieved. The longest fluorescence lifetime and the highest quantum efficiency reported so far for europium containing lyotropic organized soft materials were thus obtained. Changing the molecular structures of BPS-n with different oxyethylene chains or doped complexes with imidazolium counterions of different alkyl chain lengths, the spacings of lamellar LLC matrixes and position of dispersed complexes became tunable. The measured luminescent and rheological properties for such composite LLCs showed a dependence on the rigidity and isolation capability afforded by sterol molecules. It was also found that the increase of counterion alkyl chain length would weaken the LLC matrix's confinement and isolation effects and therefore exhibit the deteriorated luminescence performance. The enhanced luminescence efficiency and stability of doped BPS-n LLCs reflected the excellent segregation of europium complexes from each other and therefore the reduced self-quenching process. The obtained results here present the designability of LLC matrixes and their great potential to promote achieving the luminescence tunability of soft materials.
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Affiliation(s)
- Sijing Yi
- Key Laboratory of Colloid and Interface Chemistry, Shandong University , Ministry of Education, Jinan, 250100, China
| | - Jiao Wang
- Key Laboratory of Colloid and Interface Chemistry, Shandong University , Ministry of Education, Jinan, 250100, China
| | - Zhenyu Feng
- Key Laboratory of Colloid and Interface Chemistry, Shandong University , Ministry of Education, Jinan, 250100, China
| | - Xiao Chen
- Key Laboratory of Colloid and Interface Chemistry, Shandong University , Ministry of Education, Jinan, 250100, China
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Jiang HJ, Imberti S, Atkin R, Warr GG. Dichotomous Well-defined Nanostructure with Weakly Arranged Ion Packing Explains the Solvency of Pyrrolidinium Acetate. J Phys Chem B 2017; 121:6610-6617. [DOI: 10.1021/acs.jpcb.7b03045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haihui Joy Jiang
- School
of Chemistry and Australian Institute for Nanoscale Science and Technology, The University of Sydney, Sydney, NSW 2006, Australia
| | - Silvia Imberti
- STFC, Rutherford Appleton Laboratory, Didcot OX11 0QX, U.K
| | - Rob Atkin
- School
of Molecular Sciences, The University of Western Australia, Crawley, WA 6009, Australia
| | - Gregory G. Warr
- School
of Chemistry and Australian Institute for Nanoscale Science and Technology, The University of Sydney, Sydney, NSW 2006, Australia
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22
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23
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Li Q, Yao M, Yue X, Chen X. Effects of a Spacer on the Phase Behavior of Gemini Surfactants in Ethanolammonium Nitrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4328-4336. [PMID: 28415837 DOI: 10.1021/acs.langmuir.7b00927] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aggregation behavior of quaternary ammonium gemini surfactants (12-s-12) in a protic ionic liquid, ethanolammonium nitrate (EOAN), was investigated by small-angle X-ray scattering, freeze-fracture transmission electron microscopy, polarized optical microscopy, and rheological measurements. The rarely reported nonaqueous two phases in the ionic liquid were observed at lower 12-s-12 concentrations. The upper phase was composed of micelles, whereas only the surfactant unimers or multimers were detected in the low phase. At higher 12-s-12 concentrations, different aggregates were formed. The lamellar phase was observed in the 12-2-12/EOAN system, whereas the normal hexagonal phases in 12-s-12/EOAN (s = 3, 4, 5, 6, 8) systems and the micellar phase in the 12-10-12/EOAN system were observed. Such a dramatic phase transition induced by the spacer chain length was due to the unique solvent characteristics of EOAN compared to those of water and its counterpart ethylammonium nitrate.
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Affiliation(s)
- Qintang Li
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Meihuan Yao
- School of Chemistry and Chemical Engineering, Henan Normal University , Xinxiang 453007, China
| | - Xiu Yue
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , Urumqi 830011, China
| | - Xiao Chen
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
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24
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Bryant SJ, Wood K, Atkin R, Warr GG. Effect of protic ionic liquid nanostructure on phospholipid vesicle formation. SOFT MATTER 2017; 13:1364-1370. [PMID: 28111683 DOI: 10.1039/c6sm02652d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The formation of bilayer-based lyotropic liquid crystals and vesicle dispersions by phospholipids in a range of protic ionic liquids has been investigated by polarizing optical microscopy using isothermal penetration scans, differential scanning calorimetry, and small angle X-ray and neutron scattering. The stability and structure of both lamellar phases and vesicle dispersions is found to depend primarily on the underlying amphiphilic nanostructure of the ionic liquid itself. This finding has significant implications for the use of ionic liquids in soft and biological materials and for biopreservation, and demonstrates how vesicle structure and properties can be controlled through selection of cation and anion. For a given ionic liquid, systematic trends in bilayer thickness, chain-melting temperature and enthalpy increase with phospholipid acyl chain length, paralleling behaviour in aqueous systems.
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Affiliation(s)
- Saffron J Bryant
- School of Chemistry, F11, The University of Sydney, NSW 2006, Australia.
| | - Kathleen Wood
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC NSW 2232, Australia
| | - Rob Atkin
- Discipline of Chemistry, The University of Newcastle, Newcastle, NSW 2308, Australia
| | - Gregory G Warr
- School of Chemistry, F11, The University of Sydney, NSW 2006, Australia.
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25
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Porada JH, Mansueto M, Laschat S, Stubenrauch C. Microemulsions with hydrophobic ionic liquids: Influence of the structure of the anion. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.12.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Sakai K, Okada K, Misono T, Endo T, Abe M, Sakai H. Characterizing solid/ionic liquid interfaces in the presence of water and nonionic surfactants. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.09.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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28
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Selwent A, Łuczak J. Micellar aggregation of Triton X-100 surfactant in imidazolium ionic liquids. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.081] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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About the nanostructure of the ternary system water - [BMIm]PF 6 - TX-100. J Colloid Interface Sci 2016; 484:237-248. [PMID: 27619383 DOI: 10.1016/j.jcis.2016.08.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 11/22/2022]
Abstract
HYPOTHESIS Many efforts have been made to formulate water-IL microemulsions. One of the most intensely studied systems is H2O - 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIm]PF6) - 4-octylphenol polyethoxylate (TX-100) and it is not questioned that this system forms microemulsions. The nanostructures observed for traditional microemulsions are postulated with the surfactant being adsorbed at the interface such that the hydrophilic EO sides intrude into the water domains, while the hydrophobic hydrocarbon chains are immersed into [BMIm]PF6. However, the high polarity of [BMIm]PF6 and the observation that [BMIm]PF6 mixes well with oligoethylene oxides but hardly with non-polar solvents like toluene or alkanes are not in line with this picture. EXPERIMENTS We re-studied the ternary system H2O - [BMIm]PF6 - TX-100 by measuring phase diagrams, determining tie-lines, and carrying out ROESY NMR and PFG NMR measurements. FINDINGS We found that the hydrophobic part of the surfactant interacts neither with water nor with [BMIm]PF6, while both solvents interact with the hydrophilic part of the surfactant. We suggest that the surfactant is not adsorbed at the interface between water and the IL, but forms normal spherical or elongated micelles or even continuous aggregates with the hydrocarbon chains forming the interior of the aggregates.
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30
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Porada JH, Zauser D, Feucht B, Stubenrauch C. Tailored ionic liquid-based surfactants for the formation of microemulsions with water and a hydrophobic ionic liquid. SOFT MATTER 2016; 12:6352-6356. [PMID: 27405741 DOI: 10.1039/c6sm00930a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microemulsions (μe) with water and a hydrophobic ionic liquid (IL) usually require 45-60 wt% surfactant to solubilize equal amounts of water and IL. To increase the efficiency we designed a new class of surfactants by combining a hydrophilic but IL-ophobic carbohydrate-based part with a hydrophobic but IL-ophilic IL-based part. These surfactants allow formulating microemulsions with 20 wt% surfactant only which opens up a new arena for efficient water-IL μes.
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Affiliation(s)
- Jan H Porada
- Universität Stuttgart, Institut für Physikalische Chemie, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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31
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Zhang B, Zhang J, Han B. Assembling Metal-Organic Frameworks in Ionic Liquids and Supercritical CO2. Chem Asian J 2016; 11:2610-2619. [DOI: 10.1002/asia.201600323] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/10/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Bingxing Zhang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Jianling Zhang
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Colloid and Interface and Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
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32
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Li GL, Yu R, Qi T, Möhwald H, Shchukin DG. Double-Shelled Polymer Nanocontainers Decorated with Poly(ethylene glycol) Brushes by Combined Distillation Precipitation Polymerization and Thiol–Yne Surface Chemistry. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02406] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Guo Liang Li
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Max Planck
Institute
of Colloids and Interfaces, Wissenschaftspark Golm, 14476 Potsdam, Germany
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Ran Yu
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Max Planck
Institute
of Colloids and Interfaces, Wissenschaftspark Golm, 14476 Potsdam, Germany
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Tao Qi
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Max Planck
Institute
of Colloids and Interfaces, Wissenschaftspark Golm, 14476 Potsdam, Germany
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Helmuth Möhwald
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Max Planck
Institute
of Colloids and Interfaces, Wissenschaftspark Golm, 14476 Potsdam, Germany
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Dmitry G. Shchukin
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Max Planck
Institute
of Colloids and Interfaces, Wissenschaftspark Golm, 14476 Potsdam, Germany
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
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33
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Pillai SA, Lee CF, Ray D, Aswal VK, Pal H, Chen LJ, Bahadur P. Microstructure of copolymeric micelles modulated by ionic liquids: investigating the role of the anion and cation. RSC Adv 2016. [DOI: 10.1039/c6ra17016a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The addition of ionic liquids significantly alters the micellization behaviour of, and has a profound effect on, the micelles of T1304.
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Affiliation(s)
- Sadafara A. Pillai
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat 395007
- India
| | - Chin-Fen Lee
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Debes Ray
- Solid State Physics Divn
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Vinod K. Aswal
- Solid State Physics Divn
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Haridas Pal
- Radiation and Photochem. Divn
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Li-Jen Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Pratap Bahadur
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat 395007
- India
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34
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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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35
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Zheng Y, Zheng Y. Effect of Alcohols on Phase Stability of Ionic Liquid Microemulsions. TENSIDE SURFACT DET 2015. [DOI: 10.3139/113.110386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Sakai K, Okada K, Uka A, Misono T, Endo T, Sasaki S, Abe M, Sakai H. Effects of Water on Solvation Layers of Imidazolium-Type Room Temperature Ionic Liquids on Silica and Mica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6085-6091. [PMID: 25996798 DOI: 10.1021/acs.langmuir.5b01184] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Effects of the addition of water on solvation layers of imidazolium-type room temperature ionic liquids (RT-ILs) have been studied through force curve measurements of atomic force microscopy (AFM). Two kinds of RT-ILs were employed in this study; one is a hydrophilic RT-IL (1-butyl-3-methylimidazolium tetrafluoroborate, BmimBF4), and the other is a hydrophobic one (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, EmimTFSI). These RT-ILs form solvation layers on hydrophilic solid substances (i.e., silica and mica) in the absence of added water. The addition of water into BmimBF4 resulted in the disruption of the solvation layers and then the formation of an interfacial water phase on silica. In contrast, the formation of the interfacial water phase was not evidenced on mica because of the absence of hydrogen-bonding sites on the mica surface. Interestingly, the addition of water into EmimTFSI induced the formation of the interfacial water phase on the two solid surfaces. In the EmimTFSI system, importantly, significantly greater adhesion forces were observed on silica than on mica. This reflects the different formation mechanisms of the interfacial water phase on the two solid surfaces. We conclude that the hydrogen bonding is a key factor in determining whether water molecules can be adsorbed on the solid surfaces, but it is also necessary to take into account the hydrophilic/hydrophobic nature of the RT-ILs.
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Affiliation(s)
| | | | | | | | | | - Shinya Sasaki
- §Department of Mechanical Engineering, Faculty of Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
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37
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Micelle formation of Tween 20 nonionic surfactant in imidazolium ionic liquids. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Zherenkova LV, Komarov PV. Non-ionogenic amphiphiles in aprotic ionic liquids. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2015. [DOI: 10.1134/s0036024415040317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Bettoschi A, Bencini A, Berti D, Caltagirone C, Conti L, Demurtas D, Giorgi C, Isaia F, Lippolis V, Mamusa M, Murgia S. Highly stable ionic liquid-in-water emulsions as a new class of fluorescent sensors for metal ions: the case study of Fe3+ sensing. RSC Adv 2015. [DOI: 10.1039/c5ra05055c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A stable fluorescent ionic liquid can act as a fluorescent sensor for metal ion recognition.
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Affiliation(s)
- Alexandre Bettoschi
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Andrea Bencini
- Dipartimento di Chimica “Ugo Schiff”
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Debora Berti
- Dipartimento di Chimica “Ugo Schiff”
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Luca Conti
- Dipartimento di Chimica “Ugo Schiff”
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Davide Demurtas
- Interdisciplinary Center for Electron Microscopy
- Ecole Fédérale de Lausanne
- 1015-Lausanne
- Switzerland
| | - Claudia Giorgi
- Dipartimento di Chimica “Ugo Schiff”
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
| | - Marianna Mamusa
- Dipartimento di Chimica “Ugo Schiff”
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato
- Italy
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40
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Požar M, Seguier JB, Guerche J, Mazighi R, Zoranić L, Mijaković M, Kežić-Lovrinčević B, Sokolić F, Perera A. Simple and complex disorder in binary mixtures with benzene as a common solvent. Phys Chem Chem Phys 2015; 17:9885-98. [DOI: 10.1039/c4cp05970k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Substituting benzene for water in computer simulations of binary mixtures, allows one to study the various forms of disorder, without the complications often encountered in aqueous mixtures.
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Affiliation(s)
- Martina Požar
- Department of Physics
- Faculty of Sciences
- University of Split
- Split
- Croatia
| | - Jean-Baptiste Seguier
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600)
- Université Pierre et Marie Curie
- Paris cedex 05
- France
| | - Jonas Guerche
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600)
- Université Pierre et Marie Curie
- Paris cedex 05
- France
| | - Redha Mazighi
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600)
- Université Pierre et Marie Curie
- Paris cedex 05
- France
| | - Larisa Zoranić
- Department of Physics
- Faculty of Sciences
- University of Split
- Split
- Croatia
| | | | | | - Franjo Sokolić
- Department of Physics
- Faculty of Sciences
- University of Split
- Split
- Croatia
| | - Aurélien Perera
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600)
- Université Pierre et Marie Curie
- Paris cedex 05
- France
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41
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Wang S, Yin T, Shen W. Comparative Investigations on Mixing Behaviors of Cationic Gemini Surfactant with Surface Active Ionic Liquid in Water and in Ethylammonium Nitrate. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503476t] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuzhen Wang
- School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Tianxiang Yin
- School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weiguo Shen
- School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
- Department
of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
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42
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Klee A, Prevost S, Gradzielski M. Self-Assembly of Imidazolium-Based Surfactants in Magnetic Room-Temperature Ionic Liquids: Binary Mixtures. Chemphyschem 2014; 15:4032-41. [DOI: 10.1002/cphc.201402548] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/10/2014] [Indexed: 11/07/2022]
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43
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Lu F, Shi L, Yan H, Yang X, Zheng L. Aggregation behavior of dodecyltriphenylphosphonium bromide in aqueous solution: Effect of aromatic ionic liquids. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Zhang J, Peng L, Han B. Amphiphile self-assemblies in supercritical CO2 and ionic liquids. SOFT MATTER 2014; 10:5861-5868. [PMID: 25000970 DOI: 10.1039/c4sm00890a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Supercritical (sc) CO2 and ionic liquids (ILs) are very attractive green solvents with tunable properties. Using scCO2 and ILs as alternatives of conventional solvents (water and oil) for forming amphiphile self-assemblies has many advantages. For example, the properties and structures of the amphiphile self-assemblies in these solvents can be easily modulated by tuning the properties of solvents; scCO2 has excellent solvation power and mass-transfer characteristics; ILs can dissolve both organic and inorganic substances and their properties are designable to satisfy the requirements of various applications. Therefore, the amphiphile self-assemblies in scCO2 and ILs have attracted considerable attention in recent years. This review describes the advances of using scCO2 or/and ILs as amphiphile self-assembly media in the last decade. The amphiphile self-assemblies in scCO2 and ILs are first reviewed, followed by the discussion on combination of scCO2 and ILs in creating microemulsions or emulsions. Some future directions on the amphiphile self-assemblies in scCO2 and ILs are highlighted.
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Affiliation(s)
- Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, China.
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45
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Wang H, Hu T, Yang X, Yan J, Xiong W, Zhang Z. Catalytic synthesis of 2-(N-benzyl-N-phenylamino) phenol by mesoporous Pd-doped TiO2: an environmentally benign approach. APPLIED NANOSCIENCE 2014. [DOI: 10.1007/s13204-013-0200-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Ishioka Y, Minakuchi N, Mizuhata M, Maruyama T. Supramolecular gelators based on benzenetricarboxamides for ionic liquids. SOFT MATTER 2014; 10:965-971. [PMID: 24652194 DOI: 10.1039/c3sm52363b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Supramolecular gelators comprising 1,3,5-benzenetricarboxylic acids and amino acid methyl esters (glycine, L-alanine, L-valine, L-leucine, L-methionine, and L-phenylalanine) for ionic liquids were developed. Ten types of ionic liquids were gelated using the above-mentioned gelators at relatively low concentrations. Field emission-scanning electron microscopy and confocal laser scanning microscopy analyses revealed that these gelators self-assembled into an entangled fibrous structure in ionic liquids, leading to the gelation of the ionic liquids. Comparison studies, involving compounds analogous to the gelators, and Fourier transform infrared spectroscopy measurements suggested that hydrogen bonding played a key role in the self-assembly of the gelator molecules. The ionogels displayed reversible thermal transition characteristics and viscoelastic properties typical of a gel. The gelation of the ionic liquids studied under a wide range of gelator concentrations did not affect the intrinsic conductivity of the ionic liquids.
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Affiliation(s)
- Yumi Ishioka
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan.
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47
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Li Q, Wang X, Yue X, Chen X. Phase transition of a quaternary ammonium Gemini surfactant induced by minor structural changes of protic ionic liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1522-1530. [PMID: 24455981 DOI: 10.1021/la404826k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The aggregation behaviors of a Gemini surfactant [C12H25(CH3)2N(+)(CH2)2N(+)(CH3)2C12H25]Br2(-) (12-2-12) in two protic ionic liquids (PILs), propylammonium nitrate (PAN) and butylammonium nitrate (BAN), were investigated by means of several experimental techniques including small and wide-angle X-ray scattering, the polarized optical microscopy and the rheological measurement. Compared to those in ethylammonium nitrate (EAN), the minor structural changes with only one or two methylene units (-CH2-) increase in cationic chain length of PIL, result in a dramatic phase transition of formed aggregates. The critical micellization concentration was increased in PAN, while no micelle formation was detected in BAN. A normal hexagonal phase was observed in the 12-2-12/PAN system, while the normal hexagonal, bicontinuous cubic, and lamellar phases were mapped in the 12-2-12/BAN system. Such aggregation behavior changes can be ascribed to the weaker solvophobic interactions of 12-2-12 in PAN and BAN. The unique molecular structure of 12-2-12 is also an important factor to highlight such a dramatic phase transition due to the PIL structure change.
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Affiliation(s)
- Qintang Li
- Key Laboratory of Colloid and Interface Chemistry, Shandong University Ministry of Education , Jinan, 250100, China
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48
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Wang X, Long P, Dong S, Hao J. First fluorinated zwitterionic micelle with unusually slow exchange in an ionic liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14380-14385. [PMID: 24175708 DOI: 10.1021/la402937w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The micellization of a fluorinated zwitterionic surfactant in ethylammonium nitrate (EAN) was investigated. The freeze-fracture transmission electron microscope (FF-TEM) observations confirm the formation of spherical micelles with the average diameter 25.45 ± 3.74 nm. The micellization is an entropy-driven process at low temperature but an enthalpy-driven process at high temperature. Two sets of (19)F NMR signals above the critical micelle concentration (cmc) indicate that the unusually slow exchange between micelles and monomers exists in ionic liquid; meanwhile, surfactant molecules are more inclined to stay in micelle states instead of monomer states at higher concentration. Through the analysis of the half line width (Δν1/2), we can obtain the kinetic information of fluorinated zwitterionic micellization in an ionic liquid.
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Affiliation(s)
- Xiaolin Wang
- Key Laboratory of Colloid and Interface Chemistry and Key Laboratory of Special Aggregated Materials, Shandong University , Ministry of Education, Jinan 250100, China
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Shang W, Kang X, Ning H, Zhang J, Zhang X, Wu Z, Mo G, Xing X, Han B. Shape and size controlled synthesis of MOF nanocrystals with the assistance of ionic liquid mircoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13168-13174. [PMID: 24127865 DOI: 10.1021/la402882a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, the La-metal-organic frameworks (La-MOFs) were synthesized using lanthanum(III) nitrate and 1,3,5-benzenetricarboxylic acid (BTC) in H2O-in-1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), bmimPF6-in-water, and the bicontinuous microemulsions stabilized by surfactant TX-100. The MOFs prepared were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and FT-IR methods, and the microstructures of the microemulsions in the H2O/bmimPF6/TX-100 system were studied by small-angle X-ray scattering (SXAS) technique. It was shown that the dispersed droplets in the water-in-bmimPF6, bicontinuous and bmimPF6-in-water microemulsions were spherical, lamellar, and cylindrical, respectively. The shapes of the La-MOFs synthesized were similar to that of the droplets in the corresponding microemulsions. This indicated that the morphology of MOFs could be controlled by the microstructures of the microemulsions. On the basis of the systematic experimental results, the mechanism for controlling the morphology of the MOFs was proposed.
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Affiliation(s)
- Wenting Shang
- CAS Key Laboratory of Colloid and Interface and Thermodynamics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing, China
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Liang CH, Ho WY, Yeh LH, Cheng YS, Chou TH. Effects of 1-hexadecyl-3-methylimidazolium ionic liquids on the physicochemical characteristics and cytotoxicity of phosphatidylcholine vesicles. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.08.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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