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Lu T, Chen J, Zhang Q, Zhang M, Li Y, Qi Z. Surfactant-mediated mobility of carbon dots in saturated soil: comparison between anionic and cationic surfactants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:37622-37633. [PMID: 36572776 DOI: 10.1007/s11356-022-24878-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/15/2022] [Indexed: 06/18/2023]
Abstract
Understanding the mobility, retention, and fate of carbon dots (CDs) is critical for the risk management of this emerging carbon material. However, the influences of surfactants on CDs' transport through subsurface media are still poorly understood. Herein, column experiments were conducted to explore the different influences of an anionic surfactant, sodium dodecylbenzene sulfonate (SDBS), and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), on the CDs' transport in water-saturated soil. In the Na+ background electrolyte, both surfactants facilitated the transport of CDs at pH 7.0. The trend stemmed from steric hindrance, a decline in the straining effect, and competitive deposition between CDs and surfactant molecules. Additionally, SDBS increased the electrostatic repulsion of CDs and soil. Interestingly, in the divalent cation background electrolytes (i.e., Ca2+ or Cu2+), SDBS suppressed CDs' mobility, whereas CTAB had the opposite effect. The transport-inhibited effect of SDBS was mainly due to anionic surfactant ion (DBS-) precipitation with metal cations and the formation of adsorbed SDBS-Cu2+/Ca2+-CDs complexes. The enhanced effect of CTAB resulted from the CTAB coating on soil grains, which suppressed the cation bridging between CDs and soil. Furthermore, the magnitude of the SDBS promotion effect was pH-dependent. Surprisingly, CTAB could inhibit CDs' mobility at pH 9.0, owing to the binding cationic surfactant's strong hydrophobicity effect on the soil surface. Moreover, the experimental breakthrough curves of CDs were well described using a two-site transport model. Overall, the observations obtained from this study shed light on the relative mobility of CDs with different surfactants in typical groundwater conditions.
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Affiliation(s)
- Taotao Lu
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Jiuyan Chen
- Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, Hangzhou, 310058, China
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Qiang Zhang
- Ecology Institute of the Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Mengli Zhang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China
| | - Yanxiang Li
- The Testing Center of Shandong Bureau of China Metallurgical Geology Bureau, Jinan, 250014, China
| | - Zhichong Qi
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China.
- Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
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2
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Affiliation(s)
- Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shu-Ting Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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3
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Ullah S, Zhang P, Wang Y, Chen Z, Wang C, Liu C, Xu B. Effect of electrolytes on the interfacial rheological behaviors of N-cocoyl glycinate. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2020.1844736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Sana Ullah
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Pingping Zhang
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Yuzhao Wang
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Zhenghong Chen
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Ce Wang
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Changyao Liu
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
| | - Baocai Xu
- School of Light Industry, Beijing Technology and Business University, Beijing, P. R. China
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4
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Hafidi Z, El Achouri M, O Sousa FF, Pérez L. Antifungal activity of amino-alcohols based cationic surfactants and in silico, homology modeling, docking and molecular dynamics studies against lanosterol 14-α-demethylase enzyme. J Biomol Struct Dyn 2021; 40:7762-7778. [PMID: 33754947 DOI: 10.1080/07391102.2021.1902396] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Fungi are being responsible for causing serious infections in humans and animals. The opportunistic microorganisms provoke environmental contaminations in health and storage facilities to represent a serious concern to health security. The present work investigates the antifungal activity of two amino-alcohols based cationic surfactants such as CnEtOH, CnPrOH (with n = 14 and 16 are the carbon numbers of alkyl chain and EtOH = Ethanol and PrOH = Propanol) against a collection of different Candida species (Candida tropicalis, Candida albicans, Candida auris, Cyberlindnera jadinii, Candida parapsilosis, Candida glabrata and Candida rugosa) respectively. The amino-alcohols based cationic surfactants exhibited good antifungal activity against all Candida strains tested with minimum inhibitory concentrations (MIC) ranging from 0.002 to 0.30 mM. The MIC evaluation shows an increase as a function of the hydrophobicity of all inhibitors against the majority of the Candida strains tested. The different location of the alcoholic OH function in the polar head shows the influence on the availability of N+ responsible for electrostatic interactions with the candidate's cell walls, which remains a very important step in the mode of action of quaternary ammonium cationic surfactants. Hence, a 3D structure of lanosterol 14-α-demethylase enzyme from C. auris was constructed by homology modeling using an online SWISS-MODEL server. The predicted model was analyzed by serval servers. Furthermore, a molecular docking study was carried out to better understand the binding mechanism of lanosterol homologous protein with surfactant ligands. Then, the docked complexes lanosterol-surfactants were refined by the molecular dynamic simulation to analyze their interaction behavior during the simulation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Zakaria Hafidi
- Laboratoire de Physico-Chimie des Matériaux Inorganiques et Organiques, Ecole Normale supérieure-Rabat, Mohammed V University in Rabat, Centre des Sciences des Matériaux, Rabat, Morocco.,Surfactants and Nanobiotechnology Department, IQAC, CSIC, Barcelona, Spain
| | - Mohammed El Achouri
- Laboratoire de Physico-Chimie des Matériaux Inorganiques et Organiques, Ecole Normale supérieure-Rabat, Mohammed V University in Rabat, Centre des Sciences des Matériaux, Rabat, Morocco
| | - Francisco F O Sousa
- Surfactants and Nanobiotechnology Department, IQAC, CSIC, Barcelona, Spain.,Graduate Program on Pharmaceutical Innovation, Department of Biological & Health Sciences, Federal University of Amapa, Rodovia Juscelino Kubitschek, Macapa, Amapá, Brazil
| | - Lourdes Pérez
- Surfactants and Nanobiotechnology Department, IQAC, CSIC, Barcelona, Spain
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5
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Ara KZG, Linares-Pastén JA, Jönsson J, Viloria-Cols M, Ulvenlund S, Adlercreutz P, Karlsson EN. Engineering CGTase to improve synthesis of alkyl glycosides. Glycobiology 2020; 31:603-612. [PMID: 33270133 PMCID: PMC8176775 DOI: 10.1093/glycob/cwaa109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 11/14/2022] Open
Abstract
Alkyl glycoside surfactants with elongated carbohydrate chains are useful in different applications due to their improved biocompatibility. Cyclodextrin glucanotransferases can catalyze the elongation process through the coupling reaction. However, due to the presence of a hydrophobic tail, the interaction between an alkyl glycoside acceptor and the active site residues is weaker than the interaction with maltooligosaccharides at the corresponding site. Here we report the mutations of F197, G263 and E266 near the acceptor subsites in the CGTase CspCGT13 from Carboxydocella sp. The results showed that substitutions of both F197 and G263 were important for the binding of acceptor substrate dodecyl maltoside during coupling reaction. The double mutant F197Y/G263A showed enhanced coupling activity and displayed a 2-fold increase of the primary coupling product using γ-cyclodextrin as donor when compared to wildtype CspCGT13. Disproportionation activity was also reduced, which was also the case for another double mutant (F197Y/E266A) that however not showed the corresponding increase in coupling. A triple mutant F197Y/G263A/E266A maintained the increase in primary coupling product (1.8-fold increase) using dodecyl maltoside as acceptor, but disproportionation was approximately at the same level as in the double mutants. In addition, hydrolysis of starch was slightly increased by the F197Y and G263A substitutions, indicating that interactions at both positions influenced the selectivity between glycosyl and alkyl moieties.
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Affiliation(s)
| | | | - Jonas Jönsson
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Maria Viloria-Cols
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden.,Enza Biotech AB, Scheelevägen 22, 22363 Lund, Sweden
| | | | - Patrick Adlercreutz
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Eva Nordberg Karlsson
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
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6
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Machida T, Iwasa T, Taketsugu T, Sada K, Kokado K. Photoinduced Pyramidal Inversion Behavior of Phosphanes Involved with Aggregation‐Induced Emission Behavior. Chemistry 2020; 26:8028-8034. [DOI: 10.1002/chem.202000264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/27/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Takashi Machida
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Takeshi Iwasa
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Tetsuya Taketsugu
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Kazuki Sada
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Kenta Kokado
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- JST-PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
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7
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Fontana A, Guernelli S, Di Crescenzo A, Di Profio P, Palomba F, De Crescentini L, Baschieri A, Amorati R. Cardanol-like co-surfactants solubilized in pegylated micelles keep their antioxidant activity and preserve polyethylene glycol chains from oxidation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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8
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Zhou L, Yue J, Fan Y, Wang Y. Self-Assembly and Chiral Recognition of Chiral Cationic Gemini Surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12924-12933. [PMID: 30339015 DOI: 10.1021/acs.langmuir.8b02599] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Chiral cationic gemini surfactants 1,4-bis(dodecyl- N, N-dimethylammonium bromide)-2,3-butanediol (12-4(OH)2-12) including racemate, mesomer, and two enantiomers were synthesized and their self-assembly in aqueous solution has been comparatively investigated by tensiometry, conductometry, 1H NMR, small-angle neutron scattering, cryogenic transmission electron microscopy, and cryogenic scanning electron microscopy. The chirality at spacer induces different self-assembly behaviors due to the hydrogen-bonding interaction between the hydroxyl groups at the chiral centers. The stereochemistry of the spacer has little effect on the release of the counterions from the surfactant headgroups and on the molecular packing at the air-water interface. The critical micelle concentration (CMC) decreases in the order of racemate > enantiomer > mesomer. Above the CMC, the aggregates of enantiomers transit from small spherical micelles to rodlike and wormlike micelles with increasing concentration, whereas the mesomer and racemate aggregates transform from spherical micelles to rodlike micelles and platelet-like aggregates. The differences may be because the mesomer and racemate molecules mainly form intermolecular hydrogen bonds between the -OH groups, but the enantiomer molecules dominantly form intramolecular hydrogen bonds. Furthermore, it was found that the chiral micelles formed by the enantiomers exhibit enantioselection ability for bilirubin (BR) enantiomers. The recognition capability can be adjusted by the micellar structure, i.e., the rodlike micelles are better than either small spherical micelles or wormlike micelles, which might possess different chiral cavities, controlling BR shape and location. These results demonstrate that the aggregates of chiral gemini surfactants can be used to mimic the chiral recognition in biological membrane.
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Affiliation(s)
- Lili Zhou
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | | | | | - Yilin Wang
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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9
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Le Guenic S, Chaveriat L, Lequart V, Joly N, Martin P. Renewable Surfactants for Biochemical Applications and Nanotechnology. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12216] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sarah Le Guenic
- Université d'Artois, UniLasalle, EA7519 - Unité Transformations & Agroressources, F-62408; Béthune
| | - Ludovic Chaveriat
- Université d'Artois, UniLasalle, EA7519 - Unité Transformations & Agroressources, F-62408; Béthune
| | - Vincent Lequart
- Université d'Artois, UniLasalle, EA7519 - Unité Transformations & Agroressources, F-62408; Béthune
| | - Nicolas Joly
- Université d'Artois, UniLasalle, EA7519 - Unité Transformations & Agroressources, F-62408; Béthune
| | - Patrick Martin
- Université d'Artois, UniLasalle, EA7519 - Unité Transformations & Agroressources, F-62408; Béthune
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10
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Voggel M, Meinusch RM, Siewert V, Kunkel M, Wittmann V, Polarz S. Sweet surfactants: packing parameter-invariant amphiphiles as emulsifiers and capping agents for morphology control of inorganic particles. SOFT MATTER 2018; 14:7214-7227. [PMID: 30132500 PMCID: PMC6136268 DOI: 10.1039/c8sm01091a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Surfactants are not only pivotal constituents in any biological organism in the form of phospholipids, they are also essential for numerous applications benefiting from a large, internal surface, such as in detergents, for emulsification purposes, phase transfer catalysis or even nanoparticle stabilization. A particularly interesting, green class of surfactants contains glycoside head groups. Considering the variability of glycosides, a large number of surfactant isomers become accessible. According to established models in surfactant science such as the packing parameter or the hydrophilic lipophilic balance (HLB), they do not differ from each other and should, thus, have similar properties. Here, we present the preparation of a systematic set of glycoside surfactants and in particular isomers. We investigate to which extent they differ in several key features such as critical aggregation concentration, thermodynamic parameters, etc. Analytical methods like isothermal titration calorimetry (ITC), tensiometry, dynamic light scattering (DLS), small angle-X-ray scattering (SAXS), transmission electron microscopy (TEM) and others were applied. It was found that glycosurfactant isomers vary in their emulsification properties by up to two orders of magnitude. Finally, we have investigated the role of the surfactants in a microemulsion-based technique for the generation of zinc oxide (ZnO) nanoparticles. We found that the choice of the carbohydrate head has a marked effect on the shape of the formed inorganic nanocrystals.
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Affiliation(s)
- Michael Voggel
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
| | - Rebecca M. Meinusch
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
| | - Vanessa Siewert
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
| | - Marius Kunkel
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
| | - Valentin Wittmann
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
| | - Sebastian Polarz
- University of Konstanz
, Department of Chemistry
,
Universitätsstraße 10
, 78457 Konstanz
, Germany
.
;
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11
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Paluch E, Piecuch A, Obłąk E, Lamch Ł, Wilk KA. Antifungal activity of newly synthesized chemodegradable dicephalic-type cationic surfactants. Colloids Surf B Biointerfaces 2018; 164:34-41. [PMID: 29413614 DOI: 10.1016/j.colsurfb.2018.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/18/2017] [Accepted: 01/15/2018] [Indexed: 12/16/2022]
Abstract
The studies were aimed to contribute to the elucidation of the relationships between structure of the double-headed cationic surfactants - N,N-bis[3,3'-(dimethylamine)propyl]alkylamide dihydrochlorides and N,N-bis[3,3'-(trimethylammonio)propyl]alkylamide dibromides (alkyl: n-C9H19, n-C11H23, n-C13H27, n-C15H31), which are of particular interest, as they contain a labile amide group in the molecule and their antifungal activity. Therefore, the minimal inhibitory and fungicidal concentrations (MIC and MFC) of dicephalic surfactants against various fungi were tested using standardized methods. Most of the tested fungi were resistant to the Cn(TAPABr)2 compounds. The strongest growth inhibition was caused by Cn(DAPACl)2 series, which MICs ranged from 6.5 to 16 μM. The influence of dicephalic surfactants on Candida albicans biofilm and adhesion to the various surfaces was investigated with crystal violet staining or colony counting. The reduction of fungal adhesion was also observed, especially to the glass surface. One of the compounds (C14(DAPACl)2) caused DNA leakage from C. albicans cells. Further studies showed the impact of dicephalic surfactants on ROS production, accumulation of lipid droplets and filament formation. This study points to the possibility of application of dicephalic surfactants as the surface-coating agents to prevent biofilm formation or as disinfectants. The results give an insight into the possible mechanism of action of newly synthesized dicephalic surfactants in yeast cells.
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Affiliation(s)
- E Paluch
- Institute of Genetics and Microbiology, University of Wrocław, Przybyszewskiego 63/77, 51-148 Wrocław, Poland
| | - A Piecuch
- Institute of Genetics and Microbiology, University of Wrocław, Przybyszewskiego 63/77, 51-148 Wrocław, Poland
| | - E Obłąk
- Institute of Genetics and Microbiology, University of Wrocław, Przybyszewskiego 63/77, 51-148 Wrocław, Poland.
| | - Ł Lamch
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
| | - K A Wilk
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland
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12
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Bhadani A, Iwabata K, Sakai K, Koura S, Sakai H, Abe M. Sustainable oleic and stearic acid based biodegradable surfactants. RSC Adv 2017. [DOI: 10.1039/c6ra27036k] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Renewable ester functionalized fatty acid based imidazolium surfactant.
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Affiliation(s)
- Avinash Bhadani
- Department of Pure and Applied Chemistry and Research Institute for Science and Technology
- Tokyo University of Science
- Noda
- Japan
| | - Kazuki Iwabata
- Department of Pure and Applied Chemistry and Research Institute for Science and Technology
- Tokyo University of Science
- Noda
- Japan
| | - Kenichi Sakai
- Department of Pure and Applied Chemistry and Research Institute for Science and Technology
- Tokyo University of Science
- Noda
- Japan
| | - Setsuko Koura
- Department of Applied Chemistry
- Chiba Institute of Technology
- Narashino
- Japan
| | - Hideki Sakai
- Department of Pure and Applied Chemistry and Research Institute for Science and Technology
- Tokyo University of Science
- Noda
- Japan
| | - Masahiko Abe
- Department of Pure and Applied Chemistry and Research Institute for Science and Technology
- Tokyo University of Science
- Noda
- Japan
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13
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Stubenrauch C, Preisig N, Laughlin RG. Phosphine oxide surfactants revisited. Adv Colloid Interface Sci 2016; 230:2-12. [PMID: 26869216 DOI: 10.1016/j.cis.2016.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/05/2016] [Accepted: 01/05/2016] [Indexed: 10/22/2022]
Abstract
This review summarizes everything we currently know about the nonionic surfactants alkyl dimethyl (C(n)DMPO) and alkyl diethyl (C(n)DEPO) phosphine oxide (PO surfactants). The review starts with the synthesis and the general properties (Section 2) of these compounds and continues with their interfacial properties (Section 3) such as surface tension, surface rheology, interfacial tension and adsorption at solid surfaces. We discuss studies on thin liquid films and foams stabilized by PO surfactants (Section 4) as well as studies on their self-assembly into lyotropic liquid crystals and microemulsions, respectively (Section 5). We aim at encouraging colleagues from both academia and industry to take on board PO surfactants whenever possible and feasible because of their broad variety of excellent properties.
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14
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Sharma R, Kamal A, Mahajan RK. A quantitative appraisal of the binding interactions between an anionic dye, Alizarin Red S, and alkyloxypyridinium surfactants: a detailed micellization, spectroscopic and electrochemical study. SOFT MATTER 2016; 12:1736-49. [PMID: 26727388 DOI: 10.1039/c5sm02667a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The interactions of an anionic redox-active dye Alizarin Red S (ARS) with novel N-hydroxyethyl-3-alkyloxypyridinium surfactants 1-(2-hydroxyethyl)-3-(tetradecyloxy)pyridinium bromide, [HEC14OPyBr], and 1-(2-hydroxyethyl)-3-(hexadecyloxy)pyridinium bromide, [HEC16OPyBr], were investigated in an aqueous solution for the first time with an attempt to obtain comprehensive knowledge of oppositely charged dye-surfactant mixed systems. Different state-of-the-art techniques viz. conductivity, surface tension (ST), UV-visible spectroscopy, cyclic voltammetry (CV), linear sweep voltammetry (LSV), potentiometry, dynamic light scattering (DLS) and (1)H-NMR analysis have been employed. The presence of ARS decreases the critical micelle concentration (cmc) of alkyloxypyridinium surfactants as the ARS monomers behave as aromatic counterions. A combined analysis of the techniques revealed the existence of cation-π, π-π stacking, H-bonding, electrostatic and hydrophobic interactions among ARS and alkyloxypyridinium surfactants. A quantitative appraisal of the process of interaction among ARS and alkyloxypyridinium surfactants has been made in terms of various micellar, binding and electrochemical parameters evaluated using ST, UV-visible and voltammetric measurements. Also, the results extracted from (1)H-NMR and voltammetric measurements indicate that the catechol moiety of ARS is involved in the binding mechanism among ARS and alkyloxypyridinium surfactants.
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Affiliation(s)
- Renu Sharma
- Department of Chemistry, UGC-Centre for Advanced Studies-I, Guru Nanak Dev University, Amritsar-143005, India.
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15
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Fontana A, Guernelli S, Zaccheroni N, Zappacosta R, Genovese D, De Crescentini L, Riela S. Micellization properties of cardanol as a renewable co-surfactant. Org Biomol Chem 2015. [PMID: 26223697 DOI: 10.1039/c5ob01059d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim to improve the features of surfactant solutions in terms of sustainability and renewability we propose the use of hydrogenated natural and sustainable plant-derived cardanol as an additive to commercial surfactants. In the present study we demonstrated that its addition, in amounts as high as 10%, to commercial surfactants of different charge does not significantly affect surfactant properties. Conversely, the presence of hydrogenated cardanol can strongly affect spectrophotometric determination of CMC if preferential interactions with the dyes used take place. This latter evidence may be profitably exploited in surfactant manufacturing by considering that the concurrent presence of a rigid organic molecule such as Orange OT and 10% hydrogenated cardanol decreases the CMC of CTAB up to 65 times.
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Affiliation(s)
- Antonella Fontana
- Dipartimento di Farmacia, Università"G. d'Annunzio", Via dei Vestini 31, 66100 Chieti, Italy.
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Bazylińska U, Zieliński W, Kulbacka J, Samoć M, Wilk KA. New diamidequat-type surfactants in fabrication of long-sustained theranostic nanocapsules: Colloidal stability, drug delivery and bioimaging. Colloids Surf B Biointerfaces 2015; 137:121-32. [PMID: 26164204 DOI: 10.1016/j.colsurfb.2015.06.043] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/15/2015] [Accepted: 06/22/2015] [Indexed: 01/10/2023]
Abstract
We report a new theranostic nanoformulation to transport both chemotherapeutic and imaging agents for successfully exterminating cancer cells. This strategy is based on encapsulation of colchicine (cytostatic drug) and coumarin-6 (fluorescent biomarker) in oil-core nanocarriers stabilized by diamidequat-type surfactants - N,N-dimethyl-N,N-bis[2-(N-alkylcarbamoyl) ethyl]ammonium methylsulfates (2xCnA-MS, n=8,10,12), and fabricated by the nanoprecipitation technique. The surfactants were synthesized using a technologically viable methodology and characterized. The potential of the encapsulated theranostic cargoes was evaluated in cytotoxicity studies as well as in imaging of intracellular localization, accumulation and distribution of cargoes delivered to well characterized human cancer cell lines - doxorubicin-sensitive breast (MCF-7/WT), alveolar basal epithelial (A549) and skin melanoma (MEWO) - performed by confocal laser scanning microscopy (CLSM). Backscattered profiles obtained by the turbidimetric technique were applied to evaluate physical stability of the obtained nanosystems. DLS measurements confirmed the particle diameter to be below 200nm, while AFM - its morphology and shape. Doppler electrophoresis provided a highly positive ζ-potential. UV-vis was applied to determine the encapsulation efficiencies (ca. 90%), and release profiles. The study demonstrates that the soft cationic diamidequat-type surfactants are suitable for the stabilization of theranostic nanodispersions, and they can constitute a new functional class of stabilizers of nanoparticles and have a progressive impact onto development of formulations. Furthermore, our results demonstrate excellent biocompatibility of the studied long-sustained monodisperse oil-core nanocapsules, stabilized by 2xCnA-MS, which makes them promising for cell imaging.
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Affiliation(s)
- Urszula Bazylińska
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50370 Wroclaw, Poland
| | - Wojciech Zieliński
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50370 Wroclaw, Poland
| | - Julita Kulbacka
- Department of Medical Biochemistry, Medical University of Wroclaw, Chałubińskiego 10, 50-368 Wroclaw, Poland
| | - Marek Samoć
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50370 Wroclaw, Poland
| | - Kazimiera A Wilk
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50370 Wroclaw, Poland.
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17
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Teixeira RS, Cova TF, Silva SM, Oliveira R, do Vale MLC, Marques EF, Pais AA, Veiga FJ. Novel serine-based gemini surfactants as chemical permeation enhancers of local anesthetics: A comprehensive study on structure–activity relationships, molecular dynamics and dermal delivery. Eur J Pharm Biopharm 2015; 93:205-13. [DOI: 10.1016/j.ejpb.2015.02.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 02/10/2015] [Accepted: 02/26/2015] [Indexed: 11/25/2022]
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18
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Rahman ML, Yusoff MM, Kumar S. Synthesis and photoswitching properties of liquid crystals derived from myo-inositol. RSC Adv 2014. [DOI: 10.1039/c4ra05568c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new myo-inositol-based liquid crystal can be used for the creation of optical storage devices. The dark area is the UV-irradiated area forming a disordered isotropic phase, whereas the bright area protected from the light by using a mask remains in the ordered phase.
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Affiliation(s)
- Md Lutfor Rahman
- Faculty of Industrial Sciences & Technology
- Universiti Malaysia Pahang
- Kuantan, Malaysia
| | - Mashitah Mohd Yusoff
- Faculty of Industrial Sciences & Technology
- Universiti Malaysia Pahang
- Kuantan, Malaysia
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Chauhan V, Singh S, Kamboj R, Mishra R, Kaur G. Synthesis, micellization properties, and cytotoxicity trends of N-hydroxyethyl-3-alkyloxypyridinium surfactants. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3083-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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22
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Baum R, Boos J, Carey E, Catanoiu G, Engelskirchen S, Feucht B, Laupheimer M, Porada J, Schüler F, Szymanski L, Zauser D, Stubenrauch C. Colloid and Interfacial Chemistry at Stuttgart University. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.110129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The research work carried out in our group can be referred to as “Colloid and Interfacial Chemistry”. We subdivide this rather broad research area into four main topics which are covered by the projects presented in this overview. The surfaces we study are surfactant-loaden water-air surfaces, the films are mainly free-standing thin foam films of less than 100 nm thickness, and the foams are 3D aqueous foams whose stability and drainage we investigate. As regards the topic “Complex Fluids” we study lyotropic liquid crystalline phases and microemulsions. In the past, we were able to establish two new tuning parameters for the formation and destruction of lyotropic liquid crystals, while current research focuses on the lyotropic mesomorphism of new surfactants and of surfactant mixtures. Apart from lyotropic liquid crystals microemulsions are a central theme in the group. Due to their unique properties and fascinating structure variety microemulsions offer a great potential as templates for the synthesis of new functional materials, which is a further research topic in our group. These studies involve the gelation of and the polymerisation in microemulsions preserving their nanostructure to create high surface area polymers. Currently, we also use microemulsions as tailor-made nano-compartmented reaction media. The studied reactions are either enzyme-catalysed conversions of substrates or the reduction of metal salts to synthesize mono- or bimetallic nanoparticles. In this context we focus on bicontinuous and water-in-oil droplet microemulsions. Last but not least we also synthesize new surfactant structures such as inositol-based surfactants and explore the properties.
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Affiliation(s)
- R. Baum
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - J. Boos
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - E. Carey
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - G. Catanoiu
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - S. Engelskirchen
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - B. Feucht
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - M. Laupheimer
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - J. Porada
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - F. Schüler
- School of Electrical, Electronic & Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - L. Szymanski
- School of Chemical & Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | | | - C. Stubenrauch
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
- School of Chemical & Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
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Silva SG, Alves C, Cardoso AMS, Jurado AS, Pedroso de Lima MC, Vale MLC, Marques EF. Synthesis of Gemini Surfactants and Evaluation of Their Interfacial and Cytotoxic Properties: Exploring the Multifunctionality of Serine as Headgroup. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201396] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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26
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Novel ethoxylated inositol derivatives – Hybrid carbohydrate/oligoethylene oxide surfactants. J Colloid Interface Sci 2012; 371:82-8. [DOI: 10.1016/j.jcis.2011.12.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 12/17/2011] [Accepted: 12/19/2011] [Indexed: 11/17/2022]
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27
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Goreti Silva S, Fernandes RF, Marques EF, do Vale MLC. Serine-Based Bis-quat Gemini Surfactants: Synthesis and Micellization Properties. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101118] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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28
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Brito RO, Silva SG, Fernandes RMF, Marques EF, Enrique-Borges J, do Vale MLC. Enhanced interfacial properties of novel amino acid-derived surfactants: Effects of headgroup chemistry and of alkyl chain length and unsaturation. Colloids Surf B Biointerfaces 2011; 86:65-70. [PMID: 21493048 DOI: 10.1016/j.colsurfb.2011.03.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Accepted: 03/15/2011] [Indexed: 11/25/2022]
Abstract
Amino acid-derived surfactants have increasingly become a viable biofriendly alternative to petrochemically based amphiphiles as speciality surfactants. Herein, the Krafft temperatures and critical micelle concentrations (cmc) of three series of novel amino acid-derived surfactants have been determined by differential scanning microcalorimetry and surface tension measurements, respectively. The compounds comprise cationic molecules based on serine and tyrosine headgroups and anionic ones based on 4-hydroxyproline headgroups, with varying chain lengths. A linear dependence of the logarithm of cmc on chain length is found for all series, and in comparison to conventional ionic surfactants of equal chain length, the new amphiphiles present lower cmc and lower surface tension at the cmc. These observations highlight their enhanced interfacial performance. For the 18-carbon serine-derived surfactant the effects of counterion change and of the presence of a cis-double bond in the alkyl chain have also been investigated. The overall results are discussed in terms of headgroup and alkyl chain effects on micellization, in the light of available data for conventional surfactants and other types of amino acid-based amphiphiles reported in the literature.
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Affiliation(s)
- Rodrigo O Brito
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, No 687, P-4169-007 Porto, Portugal
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Novel class of non-ionic monocatenary and bolaform alkylglycoside surfactants. Synthesis by microwave-assisted glycosylation and olefin cross-metathesis or by ‘click-chemistry’: physicochemical studies. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.115] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Mixtures of n-dodecyl-beta-D-maltoside and hexaoxyethylene dodecyl ether--surface properties, bulk properties, foam films, and foams. Adv Colloid Interface Sci 2010; 155:5-18. [PMID: 20080225 DOI: 10.1016/j.cis.2009.12.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Accepted: 12/20/2009] [Indexed: 11/23/2022]
Abstract
Mixtures of the two non-ionic surfactants hexaoxyethylene dodecyl ether (C(12)E(6)) and n-dodecyl-beta-D-maltoside (beta-C(12)G(2)) were studied with regard to surface properties, bulk properties, foam films, and foams. The reason for studying a mixture of an ethylene oxide (C(i)E(j)) and a sugar (C(n)G(m)) based surfactant is that despite being non-ionic, these two surfactants behave quite differently. Firstly, the physico-chemical properties of aqueous solutions of C(n)G(m) surfactants are less temperature-sensitive than those of C(i)E(j) solutions. Secondly, the surface charge density q(0) of foam films stabilized by C(n)G(m) surfactants is pH insensitive down to the so-called isoelectric point, while that of foam films stabilized by C(i)E(j) surfactants changes linearly with the pH. The third difference is related to interaction forces between solid surfaces. Under equilibrium conditions very high forces are needed to expel beta-C(12)G(2) from between thiolated gold surfaces, while for C(12)E(6) low loads are sufficient. Fourthly, the adsorption of C(12)E(6) and beta-C(12)G(2) on hydrophilic silica and titania, respectively, is inverted. While the surface excess of C(12)E(6) is large on silica and negligible on titania, beta-C(12)G(2) adsorbs very little on silica but has a large surface excess on titania. What is the reason for this different behaviour? Under similar conditions and for comparable head group sizes, it was found that the hydration of C(i)E(j) surfactants is one order of magnitude higher but on average much weaker than that of C(n)G(m) surfactants. Moreover, C(n)G(m) surfactants possess a rigid maltoside unit, while C(i)E(j) surfactants have a very flexible hydrophilic part. Indeed, most of the different properties mentioned above can be explained by the different hydration and the head group flexibilities. The intriguing question of how mixtures of C(i)E(j) and C(n)G(m) surfactants would behave arises organically. Thus various properties of C(12)E(6)+beta-C(12)G(2) mixtures in aqueous solution have been studied with a focus on the 1:1 mixture. The results are compared with those of the single surfactants and are discussed accordingly.
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31
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Blunk D, Bongartz N, Stubenrauch C, Gärtner V. Syntheses, amphitropic liquid crystallinity, and surface activity of new inositol-based amphiphiles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:7872-7878. [PMID: 19518126 DOI: 10.1021/la900664r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Carbohydrates are interesting starting materials for scientific and industrial syntheses as they allow a versatile chemistry. Moreover, they are of natural origin and environmentally benign. During the past few years, inositol, a rather "exotic" carbohydrate, and its derivatives have gained increasing attention. Here, we describe the syntheses of new regiochemically defined inositol monoethers and monoesters as well as regioisomeric inositol ester mixtures and investigate their amphitropic liquid crystallinity. Furthermore, first results on their surface activity in aqueous solutions are given and compared with classical sugar surfactants.
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Affiliation(s)
- Dirk Blunk
- Universitat zu Koln, Institut fur Organische Chemie, Greinstrasse 4, 50939 Koln, Germany.
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32
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Towards novel efficient monomeric surfactants based on serine, tyrosine and 4-hydroxyproline: synthesis and micellization properties. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Takahashi S, Ikkai Y, Sakamoto K, Rodríguez Abreu C, Aramaki K. Preparation of rectangular and 2D-hexagonal mesostructured silica at neutral conditions using poly(oxyethylene) cholesteryl ethers and a water-soluble silica precursor. J Colloid Interface Sci 2009; 335:70-6. [PMID: 19419730 DOI: 10.1016/j.jcis.2009.02.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2008] [Revised: 02/25/2009] [Accepted: 02/27/2009] [Indexed: 12/01/2022]
Abstract
We report on the fabrication of hybrid organic-inorganic mesostructured materials from aqueous solutions of a series of poly(oxyethylene) cholesteryl ethers (ChEO(n), where n is the number of oxyethylene units) with a water-soluble silica precursor, tetra(2-hydroxyethyl) orthosilicate (THEOS) at a neutral pH condition. ChEO10 and ChEO15 form rectangular and 2D-hexagonal mesostructures, respectively, as detected by Small-Angle X-ray Scattering (SAXS) measurements. On the other hand, disordered structures (showing nevertheless a correlation length) are observed with longer hydrophilic chain surfactants, such as ChEO20, ChEO24 and ChEO30. Highly ordered mesostructures cannot be obtained at neutral pH when THEOS is substituted with a conventional silica precursor, tetraethyl orthosilicate (TEOS). The structural evolution from initial disordered micellar solutions is dependent on both surfactant and THEOS concentrations. It is also found that the silica mesostructures obtained from ChEO10 and ChEO15 templates are the same as those of the liquid crystalline phases formed in aqueous mixtures of the corresponding surfactant.
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Affiliation(s)
- Shun Takahashi
- Shiseido Research Center, 2-2-1, Hayabuchi, Tsuzuki-ku, Yokohama 224-0025, Japan
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Jia L, Moylan SL, Liang YL, Daniels ES, Klein A. Synthesis of Oligo-β-Alanine-Based Surfactant via Cobalt-Catalyzed Carbonylation and Surface Activity Study. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2008. [DOI: 10.1080/10601320802594709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Tessendorf R, Strey R, Stubenrauch C. Microemulsions with alkyldimethyl phosphine oxides and alkyldiethyl phosphine oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:11390-11398. [PMID: 18816015 DOI: 10.1021/la802333a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Alkyldimethyl phosphine oxides (C n DMPO) as well as alkyldiethyl phosphine oxides (C n DEPO) with chain lengths of n = 10 (decyl), 12 (dodecyl), and 14 (tetradecyl) were synthesized and purified to study how the formation of microemulsions depends on the size of the headgroup and on the length of the alkyl chain. For that purpose, equal amounts of water and n-octane were taken and surfactant was added to solubilize the two solvents. The resulting fish-shaped phase diagrams for C 10DEPO, C 12DEPO, and C 14DEPO show that the longer the hydrophobic chain the more efficient the surfactant. Simultaneously, the extension of the lamellar phase (L alpha) shifts toward lower total mass fractions gamma of the surfactant, i.e., the tendency to form lyotropic liquid crystals (LCs) increases. These trends are well-known for nonionic alkyl ethylene oxides and can thus be interpreted accordingly. What is astonishing, however, is the significant influence the size of the short side chains has. Replacing two methyl groups by two ethyl groups leads to a drastic drop of the three-phase region toward lower temperatures, while the efficiency remains nearly unchanged. Moreover, the tendency to form LCs decreases significantly.
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Affiliation(s)
- Renate Tessendorf
- University College Dublin, School of Chemical and Bioprocess Engineering, Centre for Synthesis and Chemical Biology (CSCB), SFI-Strategic Research Cluster in Solar Energy Conversion, Belfield, Dublin 4, Ireland
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Queneau Y, Chambert S, Besset C, Cheaib R. Recent progress in the synthesis of carbohydrate-based amphiphilic materials: the examples of sucrose and isomaltulose. Carbohydr Res 2008; 343:1999-2009. [DOI: 10.1016/j.carres.2008.02.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Revised: 02/05/2008] [Accepted: 02/06/2008] [Indexed: 10/22/2022]
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37
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Catanoiu G, Gärtner V, Stubenrauch C, Blunk D. New ethoxylated inositol surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:12802-12805. [PMID: 18027978 DOI: 10.1021/la702596a] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Carbohydrates are an attractive class of starting materials for organic syntheses because they are of natural origin, environmentally friendly, and highly functionalized, in this way promoting a sustainable chemistry. A somewhat exotic but nevertheless readily available family of carbohydrates allowing a fascinating chemistry are inositols (cyclohexane-1,2,3,4,5,6-hexols), which we currently use for the synthesis of new surfactants. In our previous work, we reported on the synthesis of a number of new regiochemically defined myo-inositol ethers and esters and studied their surface activity in aqueous solution as well as their ability to form thermotropic liquid crystals. It turned out that the hydrophilicity of the myo-inositol head group alone does not ensure sufficient water solubility of these surfactants. To improve the water solubility, we increased the inositol head group by the introduction of a tri(ethylene oxide) unit. The resulting surfactant is the first representative of a new class of inositol-based surfactants (CiEjIk) that combine the properties of classical sugar surfactants (CnGm) and oligo(ethylene oxide) alkyl ether surfactants (CiEj).
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Affiliation(s)
- Gabriela Catanoiu
- Universität zu Köln, Institut für Organische Chemie, Greinstrasse 4, 50939 Köln, Germany
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38
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Blunk D, Tessendorf R, Buchavzov N, Strey R, Stubenrauch C. Purification, Surface Tensions, and Miscibility Gaps of Alkyldimethyl and Alkyldiethylphosphine Oxides. J SURFACTANTS DETERG 2007. [DOI: 10.1007/s11743-007-1030-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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