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Hussein Ali T, Syahila Duali Hussen R, Heidelberg T, Anua Bin Tajuddin H. X‐Shaped Sugar‐Derived Emulsifiers From ‘Click Chemistry’ ‐ A New Gemini Surfactant Type for Oil‐in‐Water Systems. ChemistrySelect 2020. [DOI: 10.1002/slct.202000929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tammar Hussein Ali
- Chemistry DepartmentFaculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
- Faculty of PharmacyAl Muthanna University 66001 Samawah, Al Muthanna Iraq
| | | | - Thorsten Heidelberg
- Chemistry DepartmentFaculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
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2
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Singh N, Sharma L. Synthesis, Characteristics and Application of Novel Non-Ionic Gemini Surfactants as Reverse Micellar Systems for Encapsulation of Some Aromatic α-Amino Acids in n-Hexane. TENSIDE SURFACT DET 2020. [DOI: 10.3139/113.110682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Abstract
Non-ionic carbohydrate based gemini surfactants with rigid aromatic spacer CH2-Ar-CH2, which carry two hydrophobic tails of different tail lengths (C12, C14 and C16) and two sugar moiety polar head groups were synthesized and their reverse micellar behavior for solubilization of some aromatic α-amino acids viz. histidine (His), phenylalanine (Phy), tyrosine (Tyr) and tryptophan (Trp) in n-hexane were studied by spectroscopic analysis. The head group of these gemini surfactants consists of sugar moiety connected to C-6 of tertiary amines. Amino acids form complexes in order of His > Phy > Tyr > Trp, and in all cases it was found that the D-enantiomers solubilize better in comparison to the L-enantiomers. Moreover, more hydrophobic surfactants i.-e. surfactants with longer hydrocarbon tails show greater complex formation tendency towards D- and L-enantiomers of aromatic α-amino acids.
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Affiliation(s)
- Nirmal Singh
- Post Graduate Department of Chemistry , RSD College, Ferozepur City–152002 (Pb.)–India, E-Mail: , Phone no. +919501562900
| | - Lalit Sharma
- Department of Applied Sciences & Humanities , Shaheed Bhagat Singh State Technical Campus, Ferozepur–152004 (Pb.)–India , E-Mail:
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Singh N, Sharma L. Novel Carbohydrate Based Non-Ionic Gemini Surfactants with Flexible Spacer as Reverse Micellar Systems for Encapsulation of D- and L-Enantiomers of Some Aromatic α-Amino Acids in n-Hexane. TENSIDE SURFACT DET 2018. [DOI: 10.3139/113.110561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractNovel non-ionic gemini surfactants derived from carbohydrate carrying two hydrophobic tails with varying tail length of C12, C14 and C16, two sugar moiety as head groups, and an α-(CH2)6-flexible spacer have been synthesized. The head group of these gemini surfactants consists of sugar moiety connected to C-6 of tertiary amines. These gemini amphiphiles were explored as reverse micellar systems for encapsulation of some D- and L-enantiomers of aromatic α-amino acids i.e. histidine (His), phenylalanine (Phe), tyrosine (Tyr) and tryptophan (Trp) in n-hexane in the absence of water. It is found that these amino acids are encapsulated in the order of His > Phe > Tyr > Trp, and it is also observed that in almost all cases the D-enantiomers were better encapsulated as compared to the L-enantiomers. In all cases, encapsulation of D- and L-enantiomers of aromatic α-amino acids increased with increase of the hydrophobic chain length of the gemini surfactants.
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Xie H, Lu W, Wang J, Wang W. pH responsive vesicles with tunable size formed by single-tailed surfactants with a dendritic headgroup. RSC Adv 2017. [DOI: 10.1039/c7ra02548c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Vesicles of variable sizes are obtained by changing pH with single-tailed dendritic surfactants.
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Affiliation(s)
- Hongtao Xie
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education
- Xinjiang Uygur Autonomous Region
- College of Chemistry and Chemical Engineering of Xinjiang University
- Urumqi
| | - Wensheng Lu
- Institute of Chemistry
- Chinese Academy of Sciences (ICCAS)
- Beijing 100190
- China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education
- Xinjiang Uygur Autonomous Region
- College of Chemistry and Chemical Engineering of Xinjiang University
- Urumqi
| | - Wei Wang
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education
- Xinjiang Uygur Autonomous Region
- College of Chemistry and Chemical Engineering of Xinjiang University
- Urumqi
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5
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The Thermodynamics of Long-Tail Surfactant Aggregation Driven by Water Addition in Ethanol. J SOLUTION CHEM 2016. [DOI: 10.1007/s10953-015-0426-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Zhao J, Xu X, Dong W, Yu H. Self-assembly of some long-tail surfactants driven by water addition in ethanol. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Sharma L, Saroj, Singh N. Micellar Encapsulation of Some Polycyclic Aromatic Hydrocarbons by Glucose Derived Non-Ionic Gemini Surfactants in Aqueous Medium. TENSIDE SURFACT DET 2014. [DOI: 10.3139/113.110327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Novel glucose-based non-ionic gemini surfactants consisting of two sugar head groups, two hydrophobic tails having chain length of C8, C10, C12, C14, C16, C18 and –CH2-C6H4-CH2– as a rigid spacer were synthesized and investigated for their micellar encapsulation properties. The head groups of the geminis consist of glucose entities (with reducing function blocked in cyclic acetal group) connected through C-6 to tertiary amines. These surfactants were explored for micellar encapsulation of some polynuclear aromatic hydrocarbons (PAHs) viz. fluorene, anthracene, triptycene and pyrene in 20% ethanol–water mixture. Micellar studies revealed that PAHs were encapsulated in the sequence fluorene > anthracene > triptycene > pyrene and the better efficiency of gemini surfactant was dependent on longer alkyl tail but lesser HLB value.
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Zhou X, Wang G, Lei T. Self-Assembly of Trisiloxane-Tailed Sugar Surfactant in Aqueous Solution. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.700352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xiyang Zhou
- a Department of Chemistry and Chemical Engineering , LuLiang University , Luliang , China
| | - Guoyong Wang
- b China Research Institute of Daily Chemical Industry , Taiyuan , Shanxi , China
| | - Tao Lei
- c Taiyuan University of Science and Technology , Taiyuan , Shanxi , China
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Wang G, Li G. The Micelle-to-Vesicle Phase Transition in Dilute Aqueous Solution from Undecylamine Induced by Metal(II) ion (Cu2+). TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.110077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
A metal(II) ion (Cu2+)-induced vesicle phase was prepared from a mixture of n-undecylamine and CuCl2 in aqueous solution. Cu2+-ligand coordination with n-undecylamine results in the formation of molecular bilayers because Cu2+ can firmly bind to the amine groups of n-undecylamine which reduced the area of the head-group. In this system, no counterions in aqueous solution exist because of the Cu2+-ligand coordination, and the bilayer membranes are not shielded by salts. The vesicles were determined by transmission electron microscopy (TEM) images and dynamic light scattering (DLS) measurements.
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Affiliation(s)
- G. Wang
- Department of Chemistry, Shanxi University, Taiyuan Shanxi, 030006, P.R. China
- China Research Institute of Daily Chemical Industry, Taiyuan Shanxi, 030001, P.R. China
| | - G. Li
- China Research Institute of Daily Chemical Industry, Taiyuan Shanxi, 030001, P.R. China
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Zhou X, Xue J, Wang G, Lei T. Cu 2+-Induced Vesicle Formation. J DISPER SCI TECHNOL 2013. [DOI: 10.1080/01932691.2011.648458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Matsuoka K, Chiba N, Yoshimura T. Aggregation properties of supralong-chain surfactants with double or triple quaternary ammonium head groups. J Colloid Interface Sci 2012; 379:72-7. [PMID: 22608149 DOI: 10.1016/j.jcis.2012.04.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 04/13/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
Abstract
Double or triple quaternary ammonium head groups were designed to improve the solubility of supralong alkyl chain surfactants. In the surfactant head group, quaternary ammonium groups are connected by an ethylene spacer. Micellar shapes of divalent surfactants [C(n)H(2n)(+1)N(+)(CH(3))(2)-(CH(2))(2)-N(+)(CH(3))(3) 2Br(-): C(n)-2Am (n=18, 20, and 22)] and trivalent surfactants [C(n)H(2n)(+1)N(+)(CH(3))(2)-(CH(2))(2)-N(+)(CH(3))(2)-(CH(2))(2)-N(+)(CH(3))(3) 3Br(-): C(n)-3Am (n=18, 20, and 22)] were studied in aqueous solutions by means of dynamic light scattering (DLS) and transmission electron microscopy (TEM). Changes in the surfactant concentration have a small influence on the apparent hydrodynamic radii (r(h)) of the molecular aggregates in both surfactant series. Average values of r(h) of aggregates are 60-90 nm for C(n)-2Am (n=18, 20, and 22) and 2-40 nm for C(n)-3Am (n=18, 20, and 22). TEM micrographs showed that aggregates of C(n)-2Am (n=18, 20, and 22) typically formed rod-like micelles. In contrast, trivalent surfactants of C(n)-3Am (n=18, 20, and 22) formed spherical (C(18)-3Am) or ellipsoidal micelles (C(20)-3Am and C(22)-3Am). Moreover, the degree of micellar counterion binding for these surfactants was determined by using a bromide ion-selective electrode, which indicated relatively high values (0.8-0.9) for C(n)-2Am (n=18, 20, and 22) and more common values (0.5-0.8) for C(n)-3Am (n=18, 20, and 22). The size of the aggregates is closely related to the degree of counterion binding.
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Affiliation(s)
- Keisuke Matsuoka
- Department of Physical Chemistry, Showa Pharmaceutical University, Machida, Tokyo, Japan.
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Matovic NJ, Hayes PY, Penman K, Lehmann RP, De Voss JJ. Polyunsaturated Alkyl Amides from Echinacea: Synthesis of Diynes, Enynes, and Dienes. J Org Chem 2011; 76:4467-81. [DOI: 10.1021/jo200289f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicholas J. Matovic
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Patricia Y. Hayes
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Kerry Penman
- Integria Healthcare, 35 Miles Platting Road, Eight Mile Plans Queensland 4113, Australia
| | - Reginald P. Lehmann
- Integria Healthcare, 35 Miles Platting Road, Eight Mile Plans Queensland 4113, Australia
| | - James J. De Voss
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
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Wang H, Miao W, Liu H, Zhang X, Du X. Molecular Assemblies of 4-(Hexadecyloxy)-N-(pyridinylmethylene)anilines at the Air−Water Interface and Cu(II)-Promoted Vesicle Formation via Metal Coordination. J Phys Chem B 2010; 114:11069-75. [DOI: 10.1021/jp1059352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haibo Wang
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, and School of Chemistry and Technology, Zhanjiang Normal University, Zhanjiang 524048, P. R. China
| | - Wangen Miao
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, and School of Chemistry and Technology, Zhanjiang Normal University, Zhanjiang 524048, P. R. China
| | - Huijin Liu
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, and School of Chemistry and Technology, Zhanjiang Normal University, Zhanjiang 524048, P. R. China
| | - Xianfeng Zhang
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, and School of Chemistry and Technology, Zhanjiang Normal University, Zhanjiang 524048, P. R. China
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, and School of Chemistry and Technology, Zhanjiang Normal University, Zhanjiang 524048, P. R. China
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15
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Fan H, Zhu X, Gao L, Li Z, Huang J. The Photodimerization of a Cinnamoyl Moiety Derivative in Dilute Solution Based on the Intramolecular Chain Interaction of Gemini Surfactant. J Phys Chem B 2008; 112:10165-70. [DOI: 10.1021/jp8017666] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiming Fan
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xiaoming Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Lining Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Zichen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Jianbin Huang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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Takahashi M, Inafuku KI, Miyagi T, Oku H, Wada K, Imura T, Kitamoto D. Efficient preparation of liposomes encapsulating food materials using lecithins by a mechanochemical method. J Oleo Sci 2007; 56:35-42. [PMID: 17693697 DOI: 10.5650/jos.56.35] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In order to evaluate to the feasibility of using lecithins for nanocapsules including functional food materials, liposomes were prepared from different commercially available lecithins (SLP-WHITE, SLP-PC70 and PL30S) by the Bangham method, and their physicochemical properties were examined by using a confocal laser scanning microscopy (CLSM) and the measurements of trapping efficiency. There was little difference in the trapping efficiency among the three types of liposomes. In all cases, the trapping efficiency clearly increased with an increase of the lecithin concentration up to 10 wt % , and the maximum efficiency reached at approximately 15%. CLSM observation showed the particle size of liposomes prepared from SLP-WHITE is significantly smaller than that prepared from other lecithins. In addition, liposomal solution prepared from SLP-WHITE remained well dispersed for at least 30 days, while two other liposomal solutions showed a phase separation due to aggregation and/or fusion of liposomes. These results indicated that SLP-WHITE is the most appropriate for the preparation of stable liposomes with well dispersed among the lecithins tested. SLP-WHITE liposomes were then prepared by the mechanochemical method using a homogenizer and microfluidizer, aiming at improving the preparation efficiency and liposome stability. The particle size of the prepared SLP-WHITE liposomes decreased with increasing inlet pressure and the number of processed cycles, and reached between 73 and 123 nm based on the measurement using dynamic light scattering. Moreover, freeze-fracture transmission electron microscopy revealed that the prepared liposomes are small unilamellar vesicles (SUV) with a diameter of approximately 100 nm. The extract of Curcuma longa Linn. (Ukon), which contains curcumins as a functional food material, was then subjected to the mechanochemical method with SLP-WHITE to give liposomes including the functional materials. Interestingly, the trapping efficiency of the liposomes for curcumins was found to reach over 85%. From these results, the present mechanochemical method is very likely to allow us to efficiently prepare stable and functional liposomes from the low-cost lecithin. The method may thus have a potential for manufacturing practical nanocapsules, which serves as a novel carrier of functional food materials.
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Affiliation(s)
- Makoto Takahashi
- The United Graduate School of Agricultural Science, Kagoshima University, JAPAN
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17
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Trabelsi H, Szönyi S, Reuter P, Wehrli E, Geribaldi S. Synthesis and Vesicle Formation of Ethyl 2-[2′-(F-alkyl)ethyl] 2-alkyl Malonic Acid Disodium Salts. Supramol Chem 2006. [DOI: 10.1080/10610270108039791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- H. Trabelsi
- a Laboratoire de Chimie des Matériaux Organiques et Métalliques, Faculté des Sciences , Université de Nice-Sophia Antipolis , Parc Valrose, 06108, NICE Cedex, 2, France
| | - S. Szönyi
- b Laboratoire 3S, Centre de Recherche , 7 rue de l'Industrie, 98000, Monaco (Principality of Monaco)
| | - P. Reuter
- c Zentralinstitut für Biomezdizimische Tecknik, Abteilung Biomaterialien, Universität Ulm , 89069, ULM, Germany
| | - E. Wehrli
- d ETH-Zürich, Service Elektronenmikroscopie , LVF B34, 8092, Zürich, Switzerland
| | - S. Geribaldi
- a Laboratoire de Chimie des Matériaux Organiques et Métalliques, Faculté des Sciences , Université de Nice-Sophia Antipolis , Parc Valrose, 06108, NICE Cedex, 2, France
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Influence of copper(II) ions on the structure and properties of octodecyl propylenediamine vesicles. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2005.11.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jaeger DA, Zeng X, Apkarian RP. Shamrock surfactants: synthesis and characterization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:10427-10432. [PMID: 15544369 DOI: 10.1021/la0481391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two types of a new class of surfactants with three headgroups, which possess the general structure 1, have been prepared. Within structure 1, a central headgroup is connected to two flanking headgroups by hydrocarbon chains. The term "shamrock" is used to describe surfactants of structure 1, denoting their triple-headed character and reflecting the fact that shamrocks have leaflets in groups of three. The major lipophilic character of shamrock surfactants is provided by the two hydrocarbon chains linking the three headgroups and not by long-chain alkyl groups appended to the linking hydrocarbon chains or the headgroups. The new surfactants are 2a (2,2,15,15,28,28-hexamethyl-2,15,28-triazonianonacosane triiodide), 2b (2,2,15,15,28,28-hexamethyl-2,15,28-triazonianonacosane trichloride), 3a (O,O'-di-[10-(N,N,N-tripropylammonio)decyl]phosphorodithioate bromide), and 3b (O,O'-di-[10-(N,N,N-tributylammonio)decyl]phosphorodithioate bromide). Compound 14 (2,2,9,9,16,16-hexamethyl-2,9,16-triazoniaheptadecane triiodide) was prepared for comparison with 2a. Surfactants 2 and 3 were characterized in water by measurement of their Krafft temperatures and critical aggregation concentrations, and their aggregates were studied by 1H NMR spectroscopy, dynamic laser light scattering, and phase-contrast optical microscopy. Aqueous 2b was also studied by cryo-etch high-resolution scanning electron microscopy, which revealed irregularly shaped cells containing a complex matrix of surfactant. Coacervates were observed by optical microscopy upon the hydration of 2 and 3.
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Affiliation(s)
- David A Jaeger
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, USA.
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Mohanty A, Dey J. Spontaneous formation of vesicles and chiral self-assemblies of sodium N-(4-dodecyloxybenzoyl)-L-valinate in water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:8452-8459. [PMID: 15379460 DOI: 10.1021/la035958x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel N-acylamino acid surfactant, sodium N-(4-dodecyloxybenzoyl)-L-valinate (SDLV), has been synthesized. The aggregation behavior of the surfactant in aqueous solution has been studied by surface tension, fluorescence probe, microscopy, and dynamic light scattering (DLS) techniques. The amphiphile has a very low critical aggregation concentration (cac). These studies have suggested formation of large bilayer structures in water. The mean apparent hydrodynamic radius, RH, of the self-assemblies in dilute aqueous solution obtained from DLS measurements confirmed formation of large aggregates. The FT-IR spectra of the amphiphile have indicated strong intermolecular amide hydrogen bonding in the self-assemblies in aqueous solution. The microenvironment of the fluorescence probes is highly nonpolar and viscous in nature. The circular dichroism (CD) spectra of SDLV were recorded in water and in a 1:1 water-methanol mixture. The CD spectra have indicated the presence of chiral aggregates in aqueous solution above the cac. The microstructure of the aggregates has been studied by use of optical and transmission electron microscopy. Both types of micrographs have shown the presence of a variety of morphologies including giant spherical vesicles, tubules, twisted ribbons, and helical strands in aqueous solutions.
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Affiliation(s)
- Ashok Mohanty
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721 302
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Krishnan RSG, Thennarasu S, Mandal AB. Self-Assembling Characteristics of A New Nonionic Gemini Surfactant. J Phys Chem B 2004. [DOI: 10.1021/jp037554j] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Sathiah Thennarasu
- Chemical Laboratory and Organic Chemistry Division, Central Leather Research Institute, Adyar, Chennai-600020, India
| | - Asit Baran Mandal
- Chemical Laboratory and Organic Chemistry Division, Central Leather Research Institute, Adyar, Chennai-600020, India
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Study of Discocytes, oblates and organized particles in vesicles of Schiff base amphiphile-3-cyano-N-benzylidene 4′-(hexadecylamino) benzylamine. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00294-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hemakanthi G, Dhathathreyan A. Fusion of Vesicles in Manganese Complex of a Single-Chain Schiff Base Amphiphile—3-Cyano-N-Benzylidene Hexadecylamine. J Colloid Interface Sci 2002; 253:393-6. [PMID: 16290869 DOI: 10.1006/jcis.2002.8532] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2001] [Accepted: 06/14/2002] [Indexed: 11/22/2022]
Abstract
A single-chain amphiphile containing a rigid Schiff base segment, 3-cyano-N-benzylidene hexadecylamine (CNBHB) in the polar head group was synthesized and studied for its vesicle-forming properties. The dependence of the aggregation behavior of the vesicles as such and in the presence of manganese ions were studied as a function of temperature using differential scanning calorimetry and turbidity measurements. Transmission electron microscopy (TEM) was used to analyze the morphology of the vesicles, showed interesting features with fusion of regular structures, and were quite stable. In the presence of manganese ions, fusion of vesicles takes place. This could be due to the metal ions that are bound to the surface of the vesicles that cause a partial destruction of the hydration shell on the surface of the vesicles. The reduction in the hydration force could thus be responsible for the fusion.
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Affiliation(s)
- G Hemakanthi
- Chemical Lab, CLRI, Adyar, Chennai 600 020, India
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Renouf P, Hebrault D, Desmurs JR, Mercier JM, Mioskowski C, Lebeau L. Synthesis and surface-active properties of a series of new anionic gemini compounds. Chem Phys Lipids 1999. [DOI: 10.1016/s0009-3084(99)00003-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Hattori N, Yoshino A, Okabayashi H, O'Connor CJ. Conformational Analysis of (Phenylenedimethylene)bis(n-octylammonium)dibromides in Aqueous Solution. Conformational Change upon Micellization. J Phys Chem B 1998. [DOI: 10.1021/jp9814202] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Norikatsu Hattori
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan, and Department of Chemistry, The University of Auckland, PB 92019 Auckland, New Zealand
| | - Akihiro Yoshino
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan, and Department of Chemistry, The University of Auckland, PB 92019 Auckland, New Zealand
| | - Hirofumi Okabayashi
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan, and Department of Chemistry, The University of Auckland, PB 92019 Auckland, New Zealand
| | - Charmian J. O'Connor
- Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan, and Department of Chemistry, The University of Auckland, PB 92019 Auckland, New Zealand
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Schenning APHJ, de Bruin B, Feiters MC, Nolte RJM. Molekulare Golfbälle: Vesikel aus schalenförmigen Wirtmolekülen. Angew Chem Int Ed Engl 1994. [DOI: 10.1002/ange.19941061545] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Krafft MP, Giulieri F, Riess JG. Supramolecular assemblies from single-chain perfluoroalkylated phosphorylated amphiphiles. Colloids Surf A Physicochem Eng Asp 1994. [DOI: 10.1016/0927-7757(93)02681-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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