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Danino D, Zembc T. On the shape and connections of micelles: EM imaging inspiring thermodynamic modelling. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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The effects of small molecule organic additives on the self-assembly and rheology of betaine wormlike micellar fluids. J Colloid Interface Sci 2019; 534:518-532. [DOI: 10.1016/j.jcis.2018.09.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/12/2018] [Accepted: 09/13/2018] [Indexed: 11/23/2022]
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3
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Mirgorodskaya AB, Kushnazarova RA, Zhukova NA, Mamedov VA, Zakharova LY, Sinyashin OG. Solubilization of Biologically Active Heterocyclic Compounds by Biocompatible Microemulsions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418120312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Cellulose acetate - essential oil nanocapsules with antimicrobial activity for biomedical applications. Colloids Surf B Biointerfaces 2018; 172:471-479. [DOI: 10.1016/j.colsurfb.2018.08.069] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 11/20/2022]
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Dutta B, Barick KC, Verma G, Aswal VK, Freilich I, Danino D, Singh BG, Priyadarsini KI, Hassan PA. PEG coated vesicles from mixtures of Pluronic P123 and l-α-phosphatidylcholine: structure, rheology and curcumin encapsulation. Phys Chem Chem Phys 2018; 19:26821-26832. [PMID: 28949348 DOI: 10.1039/c7cp05303g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PEG coated vesicles are important vehicles for the passive targeting of anticancer drugs. With a view to prepare PEG decorated vesicles using co-assembly of block copolymers and lipids, here we investigated the microstructure of aggregates formed in mixtures comprising lipids (l-α-phosphatidylcholine) and block copolymers (Pluronic P123), in the polymer rich regime. DLS and SANS studies show that the structure of the aggregates can be tuned from micelles to rod-like micelles or vesicles by changing the lipid to polymer composition. Rheological studies on gels formed by mixtures of polymer and lipid suggest incorporation of the lipid into the polymer matrix. The encapsulation efficiencies of polymer incorporated liposomes for curcumin and doxorubicin hydrochloride (DOX) are evaluated at different drug to carrier ratios. The pH dependent sustained release of both the drugs from the PEGylated liposomes suggests their application in the development of cost effective formulations for anticancer drug delivery.
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Affiliation(s)
- Bijaideep Dutta
- Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400 085, India.
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Mirgorodskaya A, Ya Zakharova L, Khairutdinova E, Lukashenko S, Sinyashin O. Supramolecular systems based on gemini surfactants for enhancing solubility of spectral probes and drugs in aqueous solution. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yackevich EI, Mirgorodskaya AB, Zakharova LY, Sinyashin OG. Solubility and hydrolytic stability of indomethacin in aqueous micellar solutions. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1143-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Wang R, Tang Y, Wang Y. Effects of cationic ammonium gemini surfactant on micellization of PEO-PPO-PEO triblock copolymers in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1957-1968. [PMID: 24528103 DOI: 10.1021/la500025k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Effects of cationic ammonium gemini surfactant hexamethylene-1,6-bis(dodecyldimethylammonium bromide) (12-6-12) on the micellization of two triblock copolymers of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), F127 (EO97PO69EO97) and P123 (EO20PO70EO20), have been studied in aqueous solution by differential scanning calorimetry (DSC), dynamic light scattering (DLS), isothermal titration calorimetry (ITC), and NMR techniques. Compared with traditional single-chain ionic surfactants, 12-6-12 has a stronger ability of lowering the CMT of the copolymers, which should be attributed to the stronger aggregation ability and lower critical micelle concentration of 12-6-12. The critical micelle temperature (CMT) of the two copolymers decreases as the 12-6-12 concentration increases and the ability of 12-6-12 in lowering the CMT of F127 is slightly stronger than that of P123. Moreover, a combination of ITC and DLS has shown that 12-6-12 binds to the copolymers at the temperatures from 16 to 40 °C. At the temperatures below the CMT of the copolymers, 12-6-12 micelles bind on single copolymer chains and induce the copolymers to initiate aggregation at very low 12-6-12 concentration. At the temperatures above the CMT of the copolymers, the interaction of 12-6-12 with both monomeric and micellar copolymers leads to the formation of the mixed copolymer/12-6-12 micelles, then the mixed micelles break into smaller mixed micelles, and finally free 12-6-12 micelles form with the increase of the 12-6-12 concentration.
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Affiliation(s)
- Ruijuan Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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Khullar P, Singh V, Mahal A, Kumar H, Kaur G, Bakshi MS. Block Copolymer Micelles as Nanoreactors for Self-Assembled Morphologies of Gold Nanoparticles. J Phys Chem B 2013; 117:3028-39. [DOI: 10.1021/jp310507m] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Poonam Khullar
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
| | - Vijender Singh
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
| | - Aabroo Mahal
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
- Department of Chemistry, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar-144011, India
| | - Harsh Kumar
- Department of Chemistry, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar-144011, India
| | - Gurinder Kaur
- Nanotechnology Research Laboratory, College of North Atlantic, Labrador City, NL A2 V
2K7 Canada
| | - Mandeep Singh Bakshi
- Department of Chemistry, Wilfrid Laurier University, Science Building, 75 University
Ave. W., Waterloo ON N2L 3C5, Canada
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WITHDRAWN: Cryo-TEM of molecular assemblies. Curr Opin Colloid Interface Sci 2012. [DOI: 10.1016/j.cocis.2012.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Shrestha RG, Abezgauz L, Danino D, Sakai K, Sakai H, Abe M. Structure and dynamics of poly(oxyethylene) cholesteryl ether wormlike micelles: rheometry, SAXS, and cryo-TEM studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12877-12883. [PMID: 21939279 DOI: 10.1021/la202879f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this article, we provide direct evidence for 1-D micellar growth and the formation of a network structure in an aqueous system of poly(oxyethylene) cholesteryl ether (ChEO(20)) and lauryl diethanolamide (L-02) by rheometry, small-angle X-ray scattering (SAXS), and cryo-transmission electron microscopy (cryo-TEM). The ChEO(20) self-assembles into spheroid micelles above the critical micelle concentration and undergoes a 1-D microstructural transition upon the incorporation of L-02, which because of its lipophilic nature tends to be solubilized into the micellar palisade layer and reduces the micellar curvature. The elongated micelles entangle with each other, forming network structures of wormlike micelles, and the system shows viscoelastic properties, which could be described by the Maxwell model. A peak observed in the zero-shear viscosity (η(0)) versus L-02 concentration curve shifted toward higher L-02 concentrations and the value of maximum viscosity (η(0 max)) increased with the increasing ChEO(20) mixing fraction with water. We observed that η(0 max) increased by 2 to 4 orders of magnitude as a function of the ChEO(20) concentration. The Maxwell relaxation time (τ(R)) shows a maximum value at a concentration corresponding to η(0 max) (i.e., τ(R) increases with L-02 concentration and then decreases after attaining a maximum value, whereas the plateau modulus (G(0)) shows monotonous growth). These observations demonstrate microstructural transitions in two different modes: L-02 first induces 1-D micellar growth and as a result the viscosity increases, and finally after the system attains its maximum viscosity, L-02 causes branching in the network structures. The microstructure transitions are confirmed by SAXS and cryo-TEM techniques.
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Affiliation(s)
- Rekha Goswami Shrestha
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
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Patel T, Abezgauz L, Danino D, Aswal V, Bahadur P. Micellar Behavior of Polystyrene-Poly(Ethylene Oxide) Diblock Copolymers in Aqueous Media: Effect of Copolymer Composition, Temperature, Salt, and Surfactants. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.497668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Portnaya I, Khalfin R, Kesselman E, Ramon O, Cogan U, Danino D. Mixed micellization between natural and synthetic block copolymers: β-casein and Lutrol F-127. Phys Chem Chem Phys 2011; 13:3153-60. [DOI: 10.1039/c0cp01321h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhong S, Pochan DJ. Cryogenic Transmission Electron Microscopy for Direct Observation of Polymer and Small-Molecule Materials and Structures in Solution. POLYM REV 2010. [DOI: 10.1080/15583724.2010.493254] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Misra PK, Panigrahi S, Dash U, Mandal AB. Organization of amphiphiles. Part XI: Physico-chemical aspects of mixed micellization involving normal conventional surfactant and a non-ionic gemini surfactant. J Colloid Interface Sci 2010; 345:392-401. [DOI: 10.1016/j.jcis.2010.01.066] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 01/19/2010] [Accepted: 01/22/2010] [Indexed: 10/19/2022]
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Block Copolymer Surfactant Mixtures in Aqueous Solution: Can we Achieve Size and Shape Control by Co-Micellization? ADVANCES IN POLYMER SCIENCE 2010. [DOI: 10.1007/12_2010_66] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Ziserman L, Abezgauz L, Ramon O, Raghavan SR, Danino D. Origins of the viscosity peak in wormlike micellar solutions. 1. Mixed catanionic surfactants. A cryo-transmission electron microscopy study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10483-10489. [PMID: 19572608 DOI: 10.1021/la901189k] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The rheology of wormlike micelles ("worms") formed by surfactants in water often follows nonmonotonic trends as functions of composition. For example, a study by Raghavan et al. (Langmuir 2002, 18, 3797) on mixtures of the anionic surfactant sodium oleate (NaOA) and the cationic surfactant octyl trimethylammonium bromide (OTAB) reported a pronounced peak in the zero-shear viscosity eta0 as a function of NaOA/OTAB ratio at a constant surfactant concentration (3 wt %). In this work, we study the origins of rheological changes in the NaOA/OTAB system and the relations between the composition and structural characteristics using cryo-transmission electron microscopy (cryo-TEM). When either surfactant is in large excess, the dominating morphology is that of spherical micelles. As oppositely charged surfactant is added to the mixture, the spheres grow into linear worms and these continue to elongate as the viscosity peak (which occurs at a 70/30 NaOA/OTAB ratio) is approached from either end. At the viscosity peak, the sample shows numerous long worms as well as a small number of branched worms. Taken together, NaOA/OTAB rheology can be primarily understood on the basis of micellar growth, which is explained primarily by packing arguments. While the size of the hydrophobic micellar core continuously decreases as the short amphiphile OTAB is added at the expense of NaOA, screening of charges goes through a maximum, which contributes to the asymmetry of the viscosity curve. With regard to micellar branching, there is no significant difference in the density of branched worms on either side of the viscosity peak. Therefore, it appears that in contrast to the behavior of some surfactant/salt systems, branching does not have a significant influence on the rheology of this mixed catanionic surfactant system. Instead, our data clearly indicate that the origin of the viscosity peak is linked with micellar growth and micellar shortening.
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Affiliation(s)
- Lior Ziserman
- Department of Biotechnology and Food Engineering, Technion-Istrael Institute of Technology, Haifa, Israel
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