151
|
Sharma R, Mahajan S, Mahajan RK. Surface adsorption and mixed micelle formation of surface active ionic liquid in cationic surfactants: Conductivity, surface tension, fluorescence and NMR studies. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.03.023] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
152
|
Kumar B, Tikariha D, Ghosh KK, Barbero N, Quagliotto P. Kinetic study on effect of novel cationic dimeric surfactants for the cleavage of carboxylate ester. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3141] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Birendra Kumar
- Department of Chemistry; Govt. Rajmata Vijyaraje Sindhiya Girls College; Kawardha, Distt.-Kabirdham (C.G.) 491995 India
| | - Deepti Tikariha
- School of Studies in Chemistry; Pt. Ravishankar Shukla University; Raipur (C.G.) 492010 India
| | - Kallol K. Ghosh
- School of Studies in Chemistry; Pt. Ravishankar Shukla University; Raipur (C.G.) 492010 India
| | - Nadia Barbero
- University of Torino; Department of Chemistry, NIS Centre of Excellence; Via P. Giuria 7 10125 Torino Italy
| | - Pierluigi Quagliotto
- University of Torino; Department of Chemistry, NIS Centre of Excellence; Via P. Giuria 7 10125 Torino Italy
| |
Collapse
|
153
|
Influence of Spacer on Association Behavior and Thermodynamic Parameters of Dimeric Cationic Surfactants. J SURFACTANTS DETERG 2013. [DOI: 10.1007/s11743-013-1467-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
154
|
Kabir-ud-Din, Sharma G, Naqvi AZ, Chaturvedi SK, Khan RH. Ion-dipole induced interaction between cationic gemini/TTAB and nonionic (Tween) surfactants: interfacial and microstructural phenomena. RSC Adv 2013. [DOI: 10.1039/c3ra22691c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
155
|
Madkour TM, Salem SA, Miller SA. The role of the deformational entropy in the miscibility of polymer blends investigated using a hybrid statistical mechanics and molecular dynamics model. Phys Chem Chem Phys 2013; 15:5982-91. [DOI: 10.1039/c3cp44536d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
156
|
Tian M, Zhu L, Yu D, Wang Y, Sun S, Wang Y. Aggregate Transitions in Mixtures of Anionic Sulfonate Gemini Surfactant with Cationic Ammonium Single-Chain Surfactant. J Phys Chem B 2012. [DOI: 10.1021/jp310065y] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maozhang Tian
- Key Laboratory of Colloid and
Interface Science, Beijing National Laboratory for Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Linyi Zhu
- Key Laboratory of Colloid and
Interface Science, Beijing National Laboratory for Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Defeng Yu
- Key Laboratory of Colloid and
Interface Science, Beijing National Laboratory for Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yingxiong Wang
- Key Laboratory of Colloid and
Interface Science, Beijing National Laboratory for Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Shufeng Sun
- Center for Biological Electron
Microscopy, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yilin Wang
- Key Laboratory of Colloid and
Interface Science, Beijing National Laboratory for Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| |
Collapse
|
157
|
Wang X, Li Q, Chen X, Li Z. Effects of structure dissymmetry on aggregation behaviors of quaternary ammonium Gemini surfactants in a protic ionic liquid EAN. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:16547-16554. [PMID: 23140416 DOI: 10.1021/la304004u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The aggregation behaviors of a series of dissymmetric cationic Gemini surfactants, [C(m)H(2m+1)(CH(3))(2)N(CH(2))(2)N(CH(3))(2)C(n)H(2n+1)]Br(2), designated as m-2-n (with a fixed m + n = 24, m = 16, 14, 12) have been investigated in a protic ionic liquid, ethylammonium nitrate (EAN). Surface tension, polarized optical microscopy (POM), small-angle X-ray scattering (SAXS), and rheological measurements are adopted to investigate the micellization and lyotropic liquid crystal (LLC) formation. The obtained results indicate that the structure dissymmetry plays an important role in aggregation process of m-2-n. With increasing degree of dissymmetry, the critical micellization concentration, the maximum reduction of solvent surface tension, and the minimum area occupied per surfactant molecule at the air/EAN interface all become smaller. The thermostability of formed LLCs is therefore improved because of the more compact molecules. These characteristics can be explained by the enhancement of solvophobic effect due to the increased structure dissymmetry of Gemini surfactants.
Collapse
Affiliation(s)
- Xudong Wang
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China
| | | | | | | |
Collapse
|
158
|
Tian M, Fan Y, Ji G, Wang Y. Spontaneous aggregate transition in mixtures of a cationic gemini surfactant with a double-chain cationic surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12005-12014. [PMID: 22827887 DOI: 10.1021/la301762g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Controllable aggregate transitions were realized by mixing two kinds of cationic surfactants, hexylene-1,6-bis(dodecyldimethylammonium bromide) (C(12)C(6)C(12)Br(2)) and didodecyldimethylammonium bromide (DDAB). It was found that two parameters are the main factors determining the aggregation behavior of the mixed system, the total concentration of DDAB and C(12)C(6)C(12)Br(2) (C(T)), and the mole fraction of DDAB in the mixtures of DDAB and C(12)C(6)C(12)Br(2) (X(DDAB)). How these two parameters act on the aggregate transitions was studied in detail by various measurements including surface tension, turbidity, electrical conductivity, ζ potential, isothermal titration microcalorimetry, dynamic light scattering, cryogenic transmission electron microscopy, and (1)H NMR. When C(T) was constant, spontaneous vesicle-to-micelle transitions were found with decreasing X(DDAB) at high C(T). When X(DDAB) was constant, aggregate transitions were generated by gradually increasing C(T), depending on different X(DDAB) ranges. At X(DDAB) < 0.6, small spherical aggregates formed first and then transferred to vesicles, and finally the vesicles transitioned to micelles. At X(DDAB) ≥ 0.6, the progressive increase in C(T) led to aggregate transitions on the order of the arising of vesicles, the continuous growth of vesicles, the disruption of vesicles into micelles, and the final coexistence of vesicles and micelles. The hydrophobic interaction and electrostatic repulsion between DDAB and C(12)C(6)C(12)Br(2) together with the related degree of ionization and hydration of the surfactants were gradually adjusted by changing the ratio and the total concentration of these two surfactants, which should be responsible for the complicated aggregation behavior.
Collapse
Affiliation(s)
- Maozhang Tian
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
| | | | | | | |
Collapse
|
159
|
Zhang K, Yuan EH, Xu LL, Xue QS, Luo C, Albela B, Bonneviot L. Preparation of High-Quality MCM-48 Mesoporous Silica and the Mode of Action of the Template. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200316] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
160
|
Akram M, Kumar D, Kabir-ud-Din. Micelle-catalyzed reaction between ninhydrin and nickel dipeptide complex [Ni(II)–Gly-Tyr]+. Colloids Surf B Biointerfaces 2012; 94:220-5. [PMID: 22366069 DOI: 10.1016/j.colsurfb.2012.01.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Revised: 01/24/2012] [Accepted: 01/25/2012] [Indexed: 10/14/2022]
|
161
|
Yu D, Wang Y, Zhang J, Tian M, Han Y, Wang Y. Effects of calcium ions on solubility and aggregation behavior of an anionic sulfonate gemini surfactant in aqueous solutions. J Colloid Interface Sci 2012; 381:83-8. [PMID: 22682325 DOI: 10.1016/j.jcis.2012.05.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 05/09/2012] [Accepted: 05/10/2012] [Indexed: 10/28/2022]
Abstract
Effects of calcium ions on the solubility and aggregation behavior of an anionic sulfonate gemini surfactant 1,3-bis(N-dodecyl-N-propylsulfonate sodium)-propane (12-3-12(SO(3))(2)) have been studied in aqueous solution. Compared with single-chain surfactant sodium dodecylsulfate, 12-3-12(SO(3))(2) shows much better performance to the hardness tolerance with calcium ions. Moreover aggregates of the Ca(2+)/12-3-12(SO(3))(2) complexes in clear solutions influence the morphologies of the precipitates. At 12-3-12(SO(3))(2) concentrations lower than 1.5 mM, the small spherical micelles of Ca(2+)/12-3-12(SO(3))(2) in clear solutions generate precipitates of solid particles owing to complexation of surfactant monomers with Ca(2+). At 12-3-12(SO(3))(2) concentrations higher than 1.5mM, the Ca(2+)/12-3-12(SO(3))(2) complexes transform into large compact spherical aggregates and then into long wormlike micelles. These large aggregates are well dispersed in aqueous solutions and efficiently complex calcium ions. In particular, long wormlike micelles are entangled with each other at 100.0 mM CaCl(2) and 100.0 mM 12-3-12(SO(3))(2) exhibiting viscoelastic properties. In addition, the stacking of long wormlike micelles produces precipitates with ordered fibrillar structures. This work reveals that such anionic sulfonate gemini surfactants are better candidates than single-chain surfactants in applications with high hardness levels, and the ordered aggregate structures may have potential applications in materials science.
Collapse
Affiliation(s)
- Defeng Yu
- Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | | | | | | | | | | |
Collapse
|
162
|
Mirgorodskaya AB, Valeeva FG, Lukashenko SS, Yatskevich EI, Zakharova LY, Konovalov AI. Dicationic surfactant based catalytic systems for alkaline hydrolysis of phosphonic acid esters. KINETICS AND CATALYSIS 2012. [DOI: 10.1134/s0023158412020073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
163
|
Interactions of gemini surfactants with two model proteins: NMR, CD, and fluorescence spectroscopies. J Colloid Interface Sci 2012; 369:245-55. [DOI: 10.1016/j.jcis.2011.11.062] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 11/24/2011] [Accepted: 11/25/2011] [Indexed: 11/15/2022]
|
164
|
Wang X, Chen X, Zhao Y, Yue X, Li Q, Li Z. Nonaqueous lyotropic liquid-crystalline phases formed by gemini surfactants in a protic ionic liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2476-84. [PMID: 22185632 DOI: 10.1021/la204489v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The aggregation behaviors of three Gemini surfactants [(C(s)H(2s)-α,ω-(Me(2)N(+)C(m)H(2m+1)Br(-))(2), s = 2, m = 10, 12, 14] in a protic ionic liquid, ethylammonium nitrate (EAN), have been investigated. The polarized optical microscopy and small-angle X-ray scattering (SAXS) measurements are used to explore the lyotropic liquid crystal (LLC) formation. Compared to the LLCs formed in aqueous environment, the normal hexagonal and lamellar phases disappear. However, with increasing the surfactant concentration, a new reverse hexagonal phase (H(II)) can be mapped over a large temperature range except for other ordered aggregates including the isotropic solution phase and a two-phase coexistence region. The structural parameters of the H(II) are calculated from the corresponding SAXS patterns, showing the influence of surfactant amount, alkyl chain length, and temperature. Meanwhile, the rheological profiles indicate a typical Maxwell behavior of the LLC phases formed in EAN.
Collapse
Affiliation(s)
- Xudong Wang
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China
| | | | | | | | | | | |
Collapse
|
165
|
Angayarkanny S, Vijay R, Baskar G, Mandal A. Self-organization at the interface and in aqueous solution of a cationic gemini surfactant from the dioctyl ester of cystine. J Colloid Interface Sci 2012; 367:319-26. [DOI: 10.1016/j.jcis.2011.10.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 10/17/2011] [Accepted: 10/18/2011] [Indexed: 10/15/2022]
|
166
|
Mahajan RK, Mahajan S, Bhadani A, Singh S. Physicochemical studies of pyridinium gemini surfactants with promethazine hydrochloride in aqueous solution. Phys Chem Chem Phys 2012; 14:887-98. [DOI: 10.1039/c1cp22448d] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
167
|
Cai B, Li X, Yang Y, Dong J. Surface properties of Gemini surfactants with pyrrolidinium head groups. J Colloid Interface Sci 2011; 370:111-6. [PMID: 22261268 DOI: 10.1016/j.jcis.2011.12.025] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 12/06/2011] [Accepted: 12/09/2011] [Indexed: 11/30/2022]
Abstract
Gemini surfactants C(n)-4-(n)PB (where n represents the alkyl chain length of 10, 12, 14 and 16) were synthesized and characterized. Their surface activity, thermodynamic properties, and aggregation behavior were investigated by means of surface tension, electrical conductivity, and steady-state fluorescence. It was found that the Gemini surfactants C(n)-4-(n)PB have superior surface activity to their corresponding monomer surfactants C(n)MPB as expected. Additionally, these compounds have lower cmc and surface tension in comparison with conventional cationic Gemini surfactants m-4-m. Thermodynamic parameters (ΔG(m)(0),ΔH(m)(0),TΔS(m)(0)) show that the micellization is an entropy driven process with shorter hydrophobic chain lengths but instead is enthalpy driven for longer hydrophobic chain lengths. The effect of the hydrophobic alkyl chain length and the addition of inorganic salt NaBr on the surface activity and micellization are in line with the conventional cationic Gemini surfactants.
Collapse
Affiliation(s)
- Bo Cai
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | | | | | | |
Collapse
|
168
|
Fan Y, Hou Y, Xiang J, Yu D, Wu C, Tian M, Han Y, Wang Y. Synthesis and aggregation behavior of a hexameric quaternary ammonium surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:10570-10579. [PMID: 21797217 DOI: 10.1021/la202453c] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A star-shaped hexameric quaternary ammonium surfactant (PAHB), bearing six hydrophobic chains and six charged hydrophilic headgroups connected by an amide-type spacer group, was synthesized. The self-assembly behavior of the surfactant in aqueous solution was studied by surface tension, electrical conductivity, isothermal titration microcalorimetry, dynamic light scattering, cryogenic transmission electron microscopy, and NMR techniques. The results reveal that there are two critical aggregate concentrations during the process of aggregation, namely C(1) and C(2). The aggregate transitions are proved to be caused by the changes of the surfactant configuration through hydrophobic interaction among the hydrocarbon chains. Below C(1), PAHB may present a star-shaped molecular configuration due to intramolecular electrostatic repulsion among the charged headgroups, and large aggregates with network-like structure are observed. Between C(1) and C(2), the hydrophobic interaction among the hydrophobic chains may become stronger to make the hydrophobic chains of the PAHB molecules curve back and pack more closely, and then the network-like aggregates transfer to large spherical aggregates of ∼100 nm. Beyond C(2), the hydrophobic interaction may become strong enough to cause the PAHB molecular configuration to turn into a pyramid-like shape, resulting in the transition of the spherical large aggregates to spherical micelles of ∼10 nm. Interestingly, the PAHB displays high emulsification ability to linear fatty alkyls even at very low concentration.
Collapse
Affiliation(s)
- Yaxun Fan
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | | | | | | | | | | | | | | |
Collapse
|
169
|
Di Crescenzo A, Germani R, Del Canto E, Giordani S, Savelli G, Fontana A. Effect of Surfactant Structure on Carbon Nanotube Sidewall Adsorption. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100720] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|