1
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Bhardwaj V, Patel AM, Ballabh A. Stimuli responsive gelation of tert-butylacetic acid based LMOGs - applications in remediation of marine oil spills, dye removal and heavy metal sensing. SOFT MATTER 2023; 19:8595-8603. [PMID: 37909072 DOI: 10.1039/d3sm00960b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Tert-butylacetic acid based amides containing a structural backbone, a hydrogen bonding linker and a bulky end group have been synthesized (TBA1-TBA6) and explored for gelation of fuel oils and organic solvents. The importance of the tert-butyl group in driving the assembly towards gelation has been highlighted in our previously reported pivalamide-based phase selective organogelators (PSOGs). Both groups of compounds have been scrutinized and the effect of an additional methylene group in the newly synthesized series of compounds (on the gelation behavior, single crystal structure, non-covalent interactions responsible for gelation, morphology, dye absorption, etc.) were probed. Compounds TBA1-TBA6 were also utilized for sensing heavy metal ions and transition metal ions present in aqueous medium. They display phase-selective gelation of oil in the presence of biphasic systems (oil-sea water) when added in powder form as well as in solution form, and hence, make excellent candidates for containing oil spills in water bodies. Overall, both these libraries form a class of smallest molecules ever employed for successful organogelation behavior.
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Affiliation(s)
- Varsha Bhardwaj
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390002, Gujarat, India.
| | - Ajaykumar M Patel
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390002, Gujarat, India.
| | - Amar Ballabh
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390002, Gujarat, India.
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2
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Sebastian S, Yadav E, Bhardwaj P, Maruthi M, Kumar D, Gupta MK. Facile one-pot multicomponent synthesis of peptoid based gelators as novel scaffolds for drug incorporation and pH-sensitive release. J Mater Chem B 2023; 11:9975-9986. [PMID: 37823277 DOI: 10.1039/d3tb01527k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Infections caused by bacteria are the primary cause of illness and death globally, and antibiotics are the most commonly used medications to treat them. However, there are certain inherent problems in administering these drugs without any changes to their effectiveness. In order to sustain the targeted dosage over time, the use of a biocompatible local drug delivery system using low molecular mass gelators is preferred as a potential approach to reduce its side effects. Low molecular weight organic gelators (LMWOGs) have drawn a lot of attention due to their numerous and varied applications in multiple fields. But nowadays its quite a challenging task to synthesize new types of LMWOGs that can fill the significant gap towards potential applications. In this work, we have explored a multicomponent pathway for the synthesis of a small repertoire of peptoids from simple building blocks by a one-pot Ugi reaction. A variety of novel effective low molecular weight organic gelators have been synthesized, leading to the formation of stable self-assembled aggregates in various solvents such as DMSO, aqueous DMSO, and methanol. Consequently, these aggregates give rise to the creation of organogels and organo/hydrogels. The gels have a minimum gelation concentration (MGC) of 1-2% w/v with high thermal stability. Furthermore, successful encapsulation and release of metronidazole (MZ) were achieved within the gel matrix under physiological pH conditions at 37 °C, ensuring the preservation of its structural and functional properties. The results demonstrated that the release rate of MZ from the organo/hydrogels is contingent on pH, exhibiting a gradual and regulated release in mild alkaline environments. Moreover, the devised system displayed noteworthy antimicrobial efficacy against E. coli, underscoring the potential of these novel low molecular weight organic gels (LMWOGs) as effective drug delivery systems in the pharmaceutical industry. The gel formulations exhibit biocompatibility and negligible cytotoxicity, as evidenced by cell viability studies conducted using the MTT assay.
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Affiliation(s)
- Sharol Sebastian
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
| | - Eqvinshi Yadav
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
| | - Priya Bhardwaj
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Mulaka Maruthi
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan-173 229, Himachal Pradesh, India
| | - Manoj K Gupta
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
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3
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Ohsedo Y. Development of Thixotropic Molecular Oleogels Comprising Alkylanilide Gelators by Using a Mixing Strategy. Gels 2023; 9:717. [PMID: 37754398 PMCID: PMC10529973 DOI: 10.3390/gels9090717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/29/2023] [Accepted: 09/03/2023] [Indexed: 09/28/2023] Open
Abstract
Molecular oleogels have the potential to be used as materials in healthcare applications. However, their design and synthesis are complex, thus requiring simple and effective methods for their preparation. This paper reports on alkylanilides that are low molecular-weight organogelators, which when appropriately mixed with different alkyl chain lengths could result in the formation of mixed molecular gels that exhibit excellent gel-forming ability and mechanical properties. In addition, the single and mixed molecular organogel systems were found to be applicable as single and mixed molecular oleogel systems capable of gelling oils such as olive oil and squalane. This has been found to be true, especially in molecular oleogel systems consisting of squalane, which is used as solvents in healthcare. The mixed squalene-molecular oleogel systems showed an increase in the critical (minimum) gelation concentration from 1.0 to 0.1 wt.% in the single system and an improvement in the thixotropic behavior recovery time. The thixotropic behavior of the molecular oleogels in the mixed system was quantitatively evaluated through dynamic viscoelasticity measurements; however, it was not observed for the single-system molecular oleogels. Scanning electron microscopy of the xerogels suggested that this behavior is related to the qualitative improvement of the network owing to the refinement of the mesh structure. These mixed molecular oleogels, composed of alkylanilides displaying such thixotropic behavior, could be used as candidates for ointment-base materials in the healthcare field.
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Affiliation(s)
- Yutaka Ohsedo
- Division of Engineering, Faculty of Engineering, Nara Women's University, Kitauoyahigashi-Machi, Nara 630-8506, Japan
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4
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Ludwig AD, Gorbunova V, Saint‐Jalmes A, Berrée F, Lemiègre L. Alkylboronate β‐Phenylglucoside versus Phenylboronate β‐Alkylglucoside Organogelators. ChemistrySelect 2023. [DOI: 10.1002/slct.202300213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Andreas D. Ludwig
- Univ Rennes Ecole Nationale Supérieure de Chimie de Rennes CNRS ISCR – UMR6226 F-35000 Rennes France
| | - Viktoriia Gorbunova
- Univ Rennes Ecole Nationale Supérieure de Chimie de Rennes CNRS ISCR – UMR6226 F-35000 Rennes France
| | - Arnaud Saint‐Jalmes
- Univ Rennes CNRS IPR (Institut de Physique de Rennes) – UMR 6251 F-35000 Rennes France
| | - Fabienne Berrée
- Univ Rennes Ecole Nationale Supérieure de Chimie de Rennes CNRS ISCR – UMR6226 F-35000 Rennes France
| | - Loïc Lemiègre
- Univ Rennes Ecole Nationale Supérieure de Chimie de Rennes CNRS ISCR – UMR6226 F-35000 Rennes France
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5
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Gelation at oil-water interface by using dimethylcyclohexylamine/fatty acid-based surface-active ionic liquids. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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6
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Ohsedo Y, Sasaki M. Polymeric Hydrogelator-Based Molecular Gels Containing Polyaniline/Phosphoric Acid Systems. Gels 2022; 8:gels8080469. [PMID: 35892728 PMCID: PMC9332760 DOI: 10.3390/gels8080469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 02/04/2023] Open
Abstract
To expand the range of applications of hydrogels, researchers are interested in developing novel molecular hydrogel materials that have affinities for the living body and the ability to mediate electrical signals. In this study, a simple mixing method for creating a novel composite molecular gel is employed, which combines a hydrophilic conductive polymer, a polyaniline/phosphoric acid complex, and a polymer hydrogelator as a matrix. The composite hydrogel showed an improved gel-forming ability; more effective mechanical properties, with an increased strain value at the sol-gel transition point compared to the single system, which may be sufficient for paintable gel; and a better electrochemical response, due to the electrically conducting polyaniline component. These findings demonstrate the applicability of the new composite hydrogels to new potential paintable electrode materials.
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Affiliation(s)
- Yutaka Ohsedo
- Division of Engineering, Faculty of Engineering, Nara Women’s University, Kitauoyahigashi-machi, Nara 630-8506, Japan
- Correspondence:
| | - Mayumi Sasaki
- Graduate School of Human Centered Engineering, Nara Women’s University, Kitauoyahigashi-machi, Nara 630-8506, Japan;
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7
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Ohsedo Y. Stearoylamido-D-Glucamine Hydrogelators for Thixotropic Molecular Gels with Tunable Softness by Chemical Modification. Chem Asian J 2022; 17:e202200461. [PMID: 35703338 DOI: 10.1002/asia.202200461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/09/2022] [Indexed: 11/05/2022]
Abstract
Low-molecular-weight hydrogelators containing stearoyl, glycine, and D-glucamine moieties with or without methyl groups were synthesized to prepare chemically tuned molecular hydrogels. To evaluate the role of hydrogen bonding of hydrogelators in molecular hydrogel formation, the author has newly synthesized hydrogelators with or without methyl groups at their N-H in amide groups, contributing to the hydrogen bond formation in fiber in molecular hydrogels. The obtained hydrogels exhibited improved thixotropic performance with tunable softness, exhibiting pseudo-reversible thixotropic cycles that depended on the methyl substitution positions in the hydrogelators. To change the hydrogen bonds' positions by chemical modification has made it possible to tune the mechanical properties of molecular gels.
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Affiliation(s)
- Yutaka Ohsedo
- Division of Engineering, Faculty of Engineering, Nara Women's University, Kitauoyahigashi-machi, Nara, 630-8506, Japan
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8
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Wang Y, Yu X, Fan W, Liu R, Liu Y. Alginate-oil gelator composite foam for effective oil spill treatment. Carbohydr Polym 2022; 294:119755. [DOI: 10.1016/j.carbpol.2022.119755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/02/2022]
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9
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Self-Assembly of Alkylamido Isophthalic Acids toward the Design of a Supergelator: Phase-Selective Gelation and Dye Adsorption. Gels 2022; 8:gels8050285. [PMID: 35621583 PMCID: PMC9140382 DOI: 10.3390/gels8050285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 02/01/2023] Open
Abstract
A new series of 5-alkylamido isophthalic acid (ISA) derivatives with varying single and twin alkyl chain lengths were designed and synthesized as potential supramolecular organogelators. 5-alkylamido ISAs with linear or branched alkyl tail-groups of different lengths were effective gelators for low polarity solvents. In particular, among the presented series, a derivative with a branched, 24 carbon atom tail-group behaves as a “supergelator” with up to twenty organic solvents forming gels that are highly stable over time. The gelation behavior was analyzed using Hansen solubility parameters, and the thermal stability and viscoelastic properties of select gels were characterized. Microscopy, spectroscopy, powder X-ray diffraction, and computer modeling studies were consistent with a hierarchical self-assembly process involving the formation of cyclic H-bonded hexamers via the ISA carboxylic acid groups, which stack into elementary fibers stabilized by H-bonding of the amide linker groups and π–π stacking of the aromatic groups. These new nanomaterials exhibited potential for the phase-selective gelation of oil from oil–water mixtures and dye uptake from contaminated water. The work expands upon the design and synthesis of supramolecular self-assembled nanomaterials and their application in water purification/remediation.
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10
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Bhardwaj V, Ballabh A. A series of multifunctional pivalamide based Low Molecular Mass Gelators (LMOGs) with potential applications in oil-spill remediation and toxic dye removal. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127813] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Genio FAF, Paderes MC. Functional Supramolecular Gels Comprised of Bis‐Urea Compounds and Cosmetic Solvents. ChemistrySelect 2021. [DOI: 10.1002/slct.202102367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Frances Abygail F. Genio
- Institute of Chemistry University of the Philippines Diliman Quezon City 1101 Philippines
- Natural Sciences Research Institute University of the Philippines Diliman Quezon City 1101 Philippines
| | - Monissa C. Paderes
- Institute of Chemistry University of the Philippines Diliman Quezon City 1101 Philippines
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12
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Vibhute AM, Sureshan KM. How Far Are We in Combating Marine Oil Spills by Using Phase-Selective Organogelators? CHEMSUSCHEM 2020; 13:5343-5360. [PMID: 32808717 DOI: 10.1002/cssc.202001285] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Marine oil spills is one of the frequent natural disasters that adversely affect the economy and ecosystem. A variety of methods have been developed to combat marine oil spills. However, none of these methods is ideal and universal for tackling different kinds of oil spills. In addition, most of these methods do not offer the possibility for recovering the spilt oil. There is great interest in developing novel and better methods for combating marine oil spills that allow recovery of the spilt oil. The use of low molecular weight organogelators that can selectively congeal oil from oil-water mixtures have been proposed to be useful for oil spill recovery. From this initial proposal, the area has progressed gradually towards their practical implementation. The advancements and novel concepts in this area are reviewed.
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Affiliation(s)
- Amol M Vibhute
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695551, India
| | - Kana M Sureshan
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695551, India
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13
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14
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Ludwig AD, Saint-Jalmes A, Mériadec C, Artzner F, Tasseau O, Berrée F, Lemiègre L. Boron Effect on Sugar-Based Organogelators. Chemistry 2020; 26:13927-13934. [PMID: 32579731 DOI: 10.1002/chem.202001970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/10/2020] [Indexed: 01/03/2023]
Abstract
The reaction of several alkylglucosides with phenyl boronic acid permitted easy access to a series of alkylglucoside phenyl boronate derivatives. This type of compound has structures similar to those of known benzylidene glucoside organogelators except for the presence of a boronate function in place of the acetal one. Low to very low concentrations of these amphiphilic molecules produced gelation of several organic solvents. The rheological properties of the corresponding soft materials characterized them as elastic solids. They were further characterized by SEM to obtain more information on their morphologies and by SAXS to determine the type of self-assembly involved within the gels. The sensitivity of the boronate function towards hydrolysis was also investigated. We demonstrated that a small amount of water (5 % v/v) was sufficient to disrupt the organogels leading to the original alkylglucoside and phenyl boronic acid; an important difference with the stable benzylidene-based organogelators. Such water-sensitive boronated organogelators could be suitable substances for the preparation of smart soft material for topical drug delivery.
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Affiliation(s)
- Andreas D Ludwig
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR6226, Université de Rennes, 35000, Rennes, France
| | - Arnaud Saint-Jalmes
- CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Université de Rennes, 35000, Rennes, France
| | - Cristelle Mériadec
- CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Université de Rennes, 35000, Rennes, France
| | - Franck Artzner
- CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Université de Rennes, 35000, Rennes, France
| | - Olivier Tasseau
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR6226, Université de Rennes, 35000, Rennes, France
| | - Fabienne Berrée
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR6226, Université de Rennes, 35000, Rennes, France
| | - Loïc Lemiègre
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR6226, Université de Rennes, 35000, Rennes, France
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15
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Chen J, Boott CE, Lewis L, Siu A, Al-Debasi R, Carta V, Fogh AA, Kurek DZ, Wang L, MacLachlan MJ, Hum G. Amino Acid-Containing Phase-Selective Organogelators: A Water-Based Delivery System for Oil Spill Treatment. ACS OMEGA 2020; 5:18758-18765. [PMID: 32775877 PMCID: PMC7408258 DOI: 10.1021/acsomega.0c01821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/09/2020] [Indexed: 05/05/2023]
Abstract
The simple structural modification of replacing a terminal carboxylic acid with a primary amide group was found to lower the minimum gelation concentration (MGC), by at least an order of magnitude, for a series of N-lauroyl-l-amino acid phase-selective organogelators in decane. The amide-functionalized analogue N-lauroyl-l-alanine-CONH2 was demonstrated to gel a broad range of solvents from diesel to THF at MGCs of 2.5% w/v or less, as well as to produce gels with a higher thermal stability (ca. 30 °C) and enhanced mechanical properties (5 times increase in complex modulus), compared to the carboxylic acid analogue, N-lauroyl-l-alanine-COOH. These improved properties may be due to the additional hydrogen bonding in the primary amide analogue as revealed by SCXRD. Most significantly for this study, the introduction of the primary amide functionality enabled N-lauroyl-l-alanine-CONH2 to form a self-assembled fibrillar network in water. The aqueous network could then actively uptake and rapidly gel decane, diesel, and diluted bitumen ("dilbit") with MGCs of 2.5% w/v or less. This aqueous delivery method is advantageous for oil-remediation applications as no harmful carrier solvents are required and the gel can be easily separated from the water, allowing the oil to be recovered and the gelator recycled.
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Affiliation(s)
- Jun Chen
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Charlotte E. Boott
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Lev Lewis
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Andrew Siu
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Renad Al-Debasi
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Veronica Carta
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Amanda A. Fogh
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Daniel Z. Kurek
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Lilo Wang
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
| | - Mark J. MacLachlan
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Gabriel Hum
- BC
Research Inc., 12920
Mitchell Rd, Richmond BC
V6V 1M8, Canada
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16
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Huda MM, Rai N. Probing Early-Stage Aggregation of Low Molecular Weight Gelator in an Organic Solvent. J Phys Chem B 2020; 124:2277-2288. [PMID: 32105082 DOI: 10.1021/acs.jpcb.9b11865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Md Masrul Huda
- Dave C. Swalm School of Chemical Engineering and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State 39762, Mississippi, United States
| | - Neeraj Rai
- Dave C. Swalm School of Chemical Engineering and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State 39762, Mississippi, United States
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17
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Safieh P, Walls DJ, Frostad JM, Marangoni AG, Mirzaee Ghazani S, Pensini E. Effect of Toluene and Hexane Sorption on the Rheology and Interfacial Properties of Lecithin-Based Emulsion Gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1484-1495. [PMID: 31944124 DOI: 10.1021/acs.langmuir.9b03124] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel sorbent material consisting of a gel made from canola oil and water, emulsified with lecithin, was used to remove two model solvents from water. Sorption capacity was quantified through small-scale batch experiments. The structure and the mechanical properties of the gel were compared with and without added solvent to assess their cohesiveness upon removing contaminants from water. Confocal microscopy showed that the initial gel consisted of water droplets clustered in a canola oil continuous phase. The G' of the gels increased with solvent absorption to a maximum at 33% (v/v) hexane or 24% (v/v) toluene. Larger absorbed volumes led to decreases in G' of the gel. G' for solvent mixtures of 50% toluene and 50% hexane was intermediate between G' measured for the same volumes of pure solvents. Confocal microscopy suggests that the decrease of G' upon addition of large solvent volumes was due to a simple dilution effect. It is hypothesized that the initial increase in storage modulus was caused by changes in the structure of the lecithin films formed at the oil-water interfaces. This hypothesis was evaluated through measurements of interfacial tension, visualization of the interface with optical microscopy, force measurements of a single droplet under compression using a cantilevered-capillary force apparatus, compressional isotherm measurements conducted using a Langmuir trough. The cantilevered-capillary force apparatus and Langmuir trough experiments demonstrated that lecithin films at the canola oil-water interface were rigidified by toluene and hexane addition.
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Affiliation(s)
- Peter Safieh
- School of Engineering , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Daniel J Walls
- Chemical and Biological Engineering Department , University of British Columbia , 2332 Main Mall , Vancouver , British Columbia V6T 1Z4 , Canada
- Food Science , University of British Columbia , 2332 Main Mall , Vancouver , British Columbia V6T 1Z4 , Canada
| | - John M Frostad
- Chemical and Biological Engineering Department , University of British Columbia , 2332 Main Mall , Vancouver , British Columbia V6T 1Z4 , Canada
- Food Science , University of British Columbia , 2332 Main Mall , Vancouver , British Columbia V6T 1Z4 , Canada
| | - Alejandro G Marangoni
- Food Science Department , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Saeed Mirzaee Ghazani
- Food Science Department , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Erica Pensini
- School of Engineering , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
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18
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González-Fernández R, Álvarez D, Crochet P, Cadierno V, Menéndez MI, López R. Catalytic hydration of cyanamides with phosphinous acid-based ruthenium( ii) and osmium( ii) complexes: scope and mechanistic insights. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00523a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The catalytic hydration of cyanamides to ureas has been accomplished employing, for the first time, homogeneous catalysts, i.e. the phosphinous acid complexes [MCl2(η6-p-cymene)(PMe2OH)] (M = Ru, Os).
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Affiliation(s)
- Rebeca González-Fernández
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - Daniel Álvarez
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
| | - Pascale Crochet
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - Victorio Cadierno
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC)
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- Facultad de Química
| | - M. Isabel Menéndez
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
| | - Ramón López
- Departamento de Química Física y Analítica
- Universidad de Oviedo
- E-33006 Oviedo
- Spain
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19
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Pathak NP, Rajkamal, Yadav S. A gelator–starch blend for dry powder based instant solidification of crude oil at room temperature. Chem Commun (Camb) 2020; 56:2999-3002. [DOI: 10.1039/c9cc09943c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A sugar based organogelator and natural polymer blend has been found to be useful for the ultrafast, room temperature solidification of crude oil in a dry powder form.
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Affiliation(s)
- Navendu P. Pathak
- Department of Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad
- India
| | - Rajkamal
- Department of Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad
- India
| | - Somnath Yadav
- Department of Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad
- India
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20
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Zhang T, Zhang C, Che X, Bai B, Li M, Wang H. Benzohydrazide Derivatives: Gelation and Application in Oil Spill Recovery. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-9089-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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21
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Safieh P, Pensini E, Marangoni A, Lamont K, Ghazani SM, Callaghan-Patrachar N, Strüder-Kypke M, Peyronel F, Chen J, Rodriguez BM. Natural emulsion gels and lecithin-based sorbents: A potential treatment method for organic spills on surface waters. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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Prieto Kullmer C, Ta D, Chen CY, Cieker CJ, Annunziata O, Dzyuba SV. Hexadecyl-Containing Organic Salts as Novel Organogelators for Ionic, Eutectic, and Molecular Liquids. ACS OMEGA 2019; 4:9400-9406. [PMID: 31460030 PMCID: PMC6647963 DOI: 10.1021/acsomega.9b00038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 05/09/2019] [Indexed: 06/10/2023]
Abstract
The incorporation of a hexadecyl group on imidazolium, pyridinium, and pyrrolidinium scaffolds produces low-molecular-weight ionic organogelators that can gel several types of ionic liquids, deep eutectic solvents (DESs), and several molecular organic solvents. Minimum gelator concentrations fall in the 0.9-15.0% (w/v) range, with the lower end of the gelator concentrations observed in the gelation of DESs. On the basis of polarized optical microscopy, differential scanning calorimetry, and X-ray data, crystallization of these salts appear to produce high-surface-area crystals, which generate sufficiently stable three-dimensional networks that are capable of trapping the solvent molecules. Importantly, the nature of the fluid component of the gel appears to have a profound effect on the morphology of the crystallized organogelators. On the other hand, the organogelators appeared to modulate phase transitions of the liquids.
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Affiliation(s)
- Cesar
N. Prieto Kullmer
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Daniel Ta
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Christian Y. Chen
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Christopher J. Cieker
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Onofrio Annunziata
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Sergei V. Dzyuba
- Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, Texas 76129, United States
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23
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Safiullina AS, Ziganshina SA, Lyadov NM, Klimovitskii AE, Ziganshin MA, Gorbatchuk VV. Role of water in the formation of unusual organogels with cyclo(leucyl-leucyl). SOFT MATTER 2019; 15:3595-3606. [PMID: 30964502 DOI: 10.1039/c9sm00465c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The key role of water in the formation of cyclo(leucyl-leucyl) organogels was demonstrated. The conditions required for preparation of previously unknown gels with aliphatic hydrocarbons at room temperature were determined. Cyclo(leucyl-leucyl) self-assembles to form different structures depending on the medium used. The molecular organization of gels was studied by the methods of microscopy, spectroscopy and X-ray powder diffractometry. The organogel of cyclo(leucyl-leucyl) can reversibly change volume during the heating/cooling cycle. We showed the possibility of practical application of cyclo(leucyl-leucyl) for water purification. The results obtained give a new insight into the mechanism of gelation with cyclo(dipeptide)-based low-molecular-weight gelators and may be useful for the preparation of new physical gels.
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Affiliation(s)
- Aisylu S Safiullina
- A.M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlevskaya ul. 18, Kazan, 420008, Russia.
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24
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Zhang J, Liu J, Tong C, Chen S, Zhang B, Zhang B, Song J. Smart Materials for Environmental Remediation Based on Two-Component Gels: Room-Temperature-Phase-Selective Gelation for the Removal of Organic Pollutants Including Nitrobenzene/O-Dichlorobenzene, and Dye Molecules from the Wastewater. NANOSCALE RESEARCH LETTERS 2019; 14:42. [PMID: 30707315 PMCID: PMC6358627 DOI: 10.1186/s11671-019-2865-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
Novel two-component gel systems based on aliphatic acid-hydroxy/base interaction were developed as smart materials for environmental remediation. The G1-A16 gelator could be used directly as a powder form to selectively gel aromatic solvents (nitrobenzene and o-dichlorobenzene) from their mixtures with wastewater (containing 0.5 M sodium nitrate and 0.5 M sodium sulfate) via a simple shaking strategy at room temperature without employing co-solvents and a heating-cooling process. Meanwhile, the two-component gel system can efficiently remove the toxic dyes from the aqueous solution. The dominant factors that drive gelation in the case of the gelator and nitrobenzene or water have been studied using FT-IR, 1H NMR, and XRD. Overall, our research provides an efficient two-component approach for facilely tuning the properties of one-component gel for the realization of high-performance functionalities of gels. At the same time, our study demonstrates potential industrial application prospect in removing pollutants efficiently (such as aromatic solvents and toxic dye removal).
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Affiliation(s)
- Jing Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072 China
- Renai College of Tianjin University, Tianjin, 301636 China
| | - Jiahui Liu
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Ciqing Tong
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Shipeng Chen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072 China
| | - Baohao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072 China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072 China
| | - Jian Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350 China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072 China
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25
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Chen A, Samankumara LP, Garcia C, Bashaw K, Wang G. Synthesis and characterization of 3-O-esters of N-acetyl-d-glucosamine derivatives as organogelators. NEW J CHEM 2019. [DOI: 10.1039/c9nj00630c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fourteen glycolipids were synthesized; all alkyl esters were organogelators. The hexanoate was a phase-selective gelator for oil in water.
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Affiliation(s)
- Anji Chen
- Department of Chemistry and Biochemistry
- Old Dominion University
- Norfolk
- USA
| | | | - Consuelo Garcia
- Department of Chemistry and Biochemistry
- Old Dominion University
- Norfolk
- USA
| | - Kristen Bashaw
- Department of Chemistry and Biochemistry
- Old Dominion University
- Norfolk
- USA
| | - Guijun Wang
- Department of Chemistry and Biochemistry
- Old Dominion University
- Norfolk
- USA
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26
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Podder D, Chowdhury SR, Nandi SK, Haldar D. Tripeptide based super-organogelators: structure and function. NEW J CHEM 2019. [DOI: 10.1039/c8nj05578e] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The peptide based super-gelators are highly soluble in non-toxic organic solvent ethanol, the solution is easy to handle and just by spraying the ethanol solution over an oil–water mixture it is able to form an organogel at room temperature.
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Affiliation(s)
- Debasish Podder
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur – 741246
- India
| | - Srayoshi Roy Chowdhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur – 741246
- India
| | - Sujay Kumar Nandi
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur – 741246
- India
| | - Debasish Haldar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur – 741246
- India
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27
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Boul PJ, Rasner D, Thaemlitz CJ. Constitutionally Dynamic Oil Well Construction Fluids–Metalloaminal Chemistry. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter J. Boul
- Aramco Research Center, Houston, Texas 77084, United States
| | - Diana Rasner
- Aramco Research Center, Houston, Texas 77084, United States
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28
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Peveler WJ, Packman H, Alexander S, Chauhan RR, Hayes LM, Macdonald TJ, Cockcroft JK, Rogers S, Aarts DGAL, Carmalt CJ, Parkin IP, Bear JC. A new family of urea-based low molecular-weight organogelators for environmental remediation: the influence of structure. SOFT MATTER 2018; 14:8821-8827. [PMID: 30346465 PMCID: PMC6256360 DOI: 10.1039/c8sm01682h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Gelation processes grant access to a wealth of soft materials with tailorable properties, in applications as diverse as environmental remediation, biomedicine and electronics. Several classes of self-assembling gelators have been studied and employ non-covalent bonds to direct assembly, but recently attention has come to focus on how the overall shape of the gelator molecule impacts its gelation. Here we study a new sub-family of low molecular weight organogelators and explore how steric rearrangement influences their gelation. The gels produced are characterised with X-ray diffraction and small-angle neutron scattering (SANS) to probe their ex situ and in situ gelation mechanisms. The best examples were then tested for environmental remediation applications, gelling petrol and oils in the presence of water and salts.
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Affiliation(s)
- William J. Peveler
- Division of Biomedical Engineering
, School of Engineering
, University of Glasgow
, Rankine Building
,
Glasgow G12 8LT
, UK
.
| | - Hollie Packman
- Department of Earth Science and Engineering
, South Kensington Campus, Imperial College
,
London
, SW7 2AZ
, UK
| | - Shirin Alexander
- Energy Safety Research Institute (ESRI)
, Swansea University
, New Bay Campus
,
Swansea
, SA1 8EN
, Wales
, UK
| | - Raamanand R. Chauhan
- Department of Chemistry
, Physical and Theoretical Chemistry Laboratory
, University of Oxford
,
South Parks Road
, Oxford
, OX1 3QZ
, UK
| | - Lilian M. Hayes
- Department of Chemistry
, University College London
,
20 Gordon Street
, London
, WC1H 0AJ
, UK
| | - Thomas J. Macdonald
- Department of Chemistry
, University College London
,
20 Gordon Street
, London
, WC1H 0AJ
, UK
| | - Jeremy K. Cockcroft
- Department of Chemistry
, University College London
,
20 Gordon Street
, London
, WC1H 0AJ
, UK
| | - Sarah Rogers
- ISIS-STFC
, Rutherford Appleton Laboratory
,
Chilton
, Oxon OX11 0QX
, UK
| | - Dirk G. A. L. Aarts
- Department of Chemistry
, Physical and Theoretical Chemistry Laboratory
, University of Oxford
,
South Parks Road
, Oxford
, OX1 3QZ
, UK
| | - Claire J. Carmalt
- Department of Chemistry
, University College London
,
20 Gordon Street
, London
, WC1H 0AJ
, UK
| | - Ivan P. Parkin
- Department of Chemistry
, University College London
,
20 Gordon Street
, London
, WC1H 0AJ
, UK
| | - Joseph C. Bear
- Department of Chemical and Pharmaceutical Sciences
, Kingston University
, Kingston upon Thames
,
Surrey
, KT1 2EE
, UK
.
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29
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Rosa Nunes D, Raynal M, Isare B, Albouy PA, Bouteiller L. Organogel formation rationalized by Hansen solubility parameters: improved methodology. SOFT MATTER 2018; 14:4805-4809. [PMID: 29808203 DOI: 10.1039/c8sm00562a] [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
An organogel is obtained when a low molar mass compound forms a network of anisotropic fibres in a liquid that is therefore transformed into a macroscopic solid. Various approaches have been proposed to correlate organogel formation and Hansen solubility parameters. These approaches are well adapted to specific experimental datasets but lack universality. A general method to determine the gelation domain from the solubility data of low molecular weight gelators is here reported.
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Affiliation(s)
- Danilo Rosa Nunes
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, F-75005 Paris, France.
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30
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Chen A, Okafor IS, Garcia C, Wang G. Synthesis and self-assembling properties of 4,6−O-benzylidene acetal protected D-glucose and D-glucosamine β−1,2,3−triazole derivatives. Carbohydr Res 2018; 461:60-75. [DOI: 10.1016/j.carres.2018.02.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 02/17/2018] [Accepted: 02/17/2018] [Indexed: 12/17/2022]
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31
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Synthesis and studies on gelation ability of phenol based maleate amphiphile and its application in nutraceutical release. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.08.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Ohsedo Y, Oono M, Saruhashi K, Watanabe H, Miyamoto N. New composite thixotropic hydrogel composed of a polymer hydrogelator and a nanosheet. ROYAL SOCIETY OPEN SCIENCE 2017; 4:171117. [PMID: 29308249 PMCID: PMC5750016 DOI: 10.1098/rsos.171117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
A composite gel composed of a water-soluble aromatic polyamide hydrogelator and the nanosheet Laponite®, a synthetic layered silicate, was produced and found to exhibit thixotropic behaviour. Whereas the composite gel contains the gelator at the same concentration as the molecular gel made by the gelator only, the composite gel becomes a softer thixotropic gel compared to the molecular gel made by the gelator only. The reason for this could be that bundles of polymer gelator may be loosened and the density of the polymer network increased in the presence of Laponite.
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Affiliation(s)
- Yutaka Ohsedo
- Department of Life, Environment and Materials Science, Fukuoka Institute of Technology, 3-30-1, Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
- Comprehensive Research Organization, Fukuoka Institute of Technology, 3-30-1, Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
- Global Innovation Center, Kyushu University, 6-1 Kasuga-koen Kasuga-city, Fukuoka 816-8580, Japan
| | - Masashi Oono
- Nissan Chemical Industries, Ltd., 2-10-1 Tsuboinishi, Funabashi, Chiba 274-8507, Japan
| | - Kowichiro Saruhashi
- Nissan Chemical Industries, Ltd., 2-10-1 Tsuboinishi, Funabashi, Chiba 274-8507, Japan
| | - Hisayuki Watanabe
- Global Innovation Center, Kyushu University, 6-1 Kasuga-koen Kasuga-city, Fukuoka 816-8580, Japan
- Nissan Chemical Industries, Ltd., 2-10-1 Tsuboinishi, Funabashi, Chiba 274-8507, Japan
| | - Nobuyoshi Miyamoto
- Department of Life, Environment and Materials Science, Fukuoka Institute of Technology, 3-30-1, Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
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33
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Removal of organic solvents/oils using carbon aerogels derived from waste durian shell. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.06.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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34
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Ohsedo Y, Saruhashi K, Watanabe H, MIyamoto N. Synthesis of an electronically conductive hydrogel from a hydrogelator and a conducting polymer. NEW J CHEM 2017. [DOI: 10.1039/c7nj02412f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polymer hydrogelator mixed with a water-soluble electronically conductive polymer exhibits thixotropy due to the hydrogelator although each component at low concentrations does not exhibit this behaviour.
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Affiliation(s)
- Yutaka Ohsedo
- Department of Life
- Environment and Materials Science
- Fukuoka Institute of Technology
- Fukuoka 811-0295
- Japan
| | | | - Hisayuki Watanabe
- Global Innovation Center
- Kyushu University
- Kasuga-citya Fukuoka 816-8580
- Japan
- Nissan Chemical Industries
| | - Nobuyoshi MIyamoto
- Department of Life
- Environment and Materials Science
- Fukuoka Institute of Technology
- Fukuoka 811-0295
- Japan
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35
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Ohsedo Y, Oono M, Saruhashi K, Watanabe H, Miyamoto N. Thixotropic stiff hydrogels from a new class of oleoyl-d-glucamine-based low-molecular-weight gelators. RSC Adv 2017. [DOI: 10.1039/c7ra07244a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of tripartite compounds comprising oleoyl, amino acid and d-glucamine moieties form stiff molecular hydrogels with strong thixotropic properties.
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Affiliation(s)
- Yutaka Ohsedo
- Department of Life, Environment and Materials Science
- Fukuoka Institute of Technology
- Fukuoka 811-0295
- Japan
- Comprehensive Research Organization
| | | | | | - Hisayuki Watanabe
- Global Innovation Center
- Kyushu University
- Fukuoka 816-8580
- Japan
- Nissan Chemical Industries, Ltd
| | - Nobuyoshi Miyamoto
- Department of Life, Environment and Materials Science
- Fukuoka Institute of Technology
- Fukuoka 811-0295
- Japan
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36
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Hou X, Butz J, Chen J, Wang ZD, Zhao JX, Shiu T, Chu QR. Low molecular weight organogelators derived from threefold symmetric tricarbamates. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.11.104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Kesava Raju CS, Pramanik B, Ravishankar R, Chalapathi Rao PV, Sriganesh G. Xylitol based phase selective organogelators for potential oil spillage recovery. RSC Adv 2017. [DOI: 10.1039/c7ra06898k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Xylitol based cost effective and easily synthesizable phase selective gelators were developed for strong gelation ability for different crude oils, wide range of refinery products and reported for their potential application in oil spillage recovery.
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Affiliation(s)
| | - Bhaskar Pramanik
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
| | - Raman Ravishankar
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
| | | | - Gandham Sriganesh
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
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38
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Yang H, Zhang S, Liu K, Fang Y. Calix[4]arene-based low molecular mass gelators to form gels in organoalkoxysilanes. RSC Adv 2016. [DOI: 10.1039/c6ra22731g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Organoalkoxysilanes-based molecular gels for melting-free deposition molding, potential smart materials for 3D printing.
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Affiliation(s)
- Hui Yang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Shaofei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
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39
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Kesava Raju CS, Pramanik B, Kar T, Rao PVC, Choudary NV, Ravishankar R. Low molecular weight gels: potential in remediation of crude oil spillage and recovery. RSC Adv 2016. [DOI: 10.1039/c6ra10462b] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A molecular gelator which has strong gelation ability for different crude oils (light to heavy crudes), and a wide range of refinery products is reported for the first time for its potential application in oil spillage/recovery.
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Affiliation(s)
| | | | - Tanmoy Kar
- Hindustan Petroleum Green R&D Center (HPGRDC)
- Bangalore
- India
| | | | | | | |
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40
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Rajkamal R, Pathak NP, Chatterjee D, Paul A, Yadav S. Arabinose based gelators: rheological characterization of the gels and phase selective organogelation of crude-oil. RSC Adv 2016. [DOI: 10.1039/c6ra21109g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Detailed characterizations, including rheological studies of new triazolyl arabinoside based organogelators which are effective for PSOG of crude-oil are reported.
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Affiliation(s)
- Rajkamal Rajkamal
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad – 826004
- India
| | - Navendu Prakash Pathak
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad – 826004
- India
| | - Debnath Chatterjee
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad – 826004
- India
| | - Abhijit Paul
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad – 826004
- India
| | - Somnath Yadav
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad – 826004
- India
| |
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