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Saroj, Sharma L. Influence of Nature of Spacer and Hydrocarbon Chain Length on Micellar Encapsulation of Polynuclear Aromatic Hydrocarbons by Carbohydrate Derived
Non‐Ionic
Gemini Surfactants in Aqueous Ethanol Medium. J SURFACTANTS DETERG 2020. [DOI: 10.1002/jsde.12446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Saroj
- Bipin Tripathi Kumaon Institute of Technology Dwarahat Almora 263653 Uttarakhand India
| | - Lalit Sharma
- Shaheed Bhagat Singh Technical Campus Ferozepur 152004 Punjab India
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Singh N, Sharma L. Synthesis of Carbohydrate Derived Non-ionic Gemini Surfactants and Study of Their Micellar and Reverse Micellar Behavior - A Review. LETT ORG CHEM 2019. [DOI: 10.2174/1570178616666190123124727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Gemini surfactants (gemini) are a distinct class of amphiphiles having more than one hydrophobic tail and hydrophilic head group connected via a spacer. These surfactants usually have better surface active properties than corresponding conventional surfactant of equal chain length. Depending upon the nature of charge on head group, these geminis may be cationic or anionic. If there is no charge on head group, the geminis are termed as non-ionic. Carbohydrate derived gemini surfactants carry sugar moiety linked with each of the conventional surfactants, which are further connected by spacer. The sugar moiety was found to enhance the aggregation tendencies. Moreover, due to the presence of sugar moiety, these surfactants are non-toxic and biodegradable. Due to chiral nature of sugar moiety, these surfactants can be used for chiral recognition of some chiral drugs in order to improve their aqueous solubility. Non-ionic surfactants are more important than ionic surfactants as in the latter case, due to repulsion among the same charged head group, aggregation does not take place readily. However, in case of non-ionic surfactants, the head group carries no charge, so there is no repulsion, thus micelle forms easily and at low concentration. The only repulsive forces among head groups are due to hydration shell formed by solvent molecules.
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Affiliation(s)
- Nirmal Singh
- Post Graduate Department of Chemistry, R.S.D. College, Ferozepur City - 152002 (Pb.), India
| | - Lalit Sharma
- Department of Applied Sciences and Humanities, Shaheed Bhagat Singh State Technical Campus, Ferozepur - 152004 (Pb.), India
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Singh N, Sharma L. Novel Carbohydrate Based Non-Ionic Gemini Surfactants with Flexible Spacer as Reverse Micellar Systems for Encapsulation of D- and L-Enantiomers of Some Aromatic α-Amino Acids in n-Hexane. TENSIDE SURFACT DET 2018. [DOI: 10.3139/113.110561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractNovel non-ionic gemini surfactants derived from carbohydrate carrying two hydrophobic tails with varying tail length of C12, C14 and C16, two sugar moiety as head groups, and an α-(CH2)6-flexible spacer have been synthesized. The head group of these gemini surfactants consists of sugar moiety connected to C-6 of tertiary amines. These gemini amphiphiles were explored as reverse micellar systems for encapsulation of some D- and L-enantiomers of aromatic α-amino acids i.e. histidine (His), phenylalanine (Phe), tyrosine (Tyr) and tryptophan (Trp) in n-hexane in the absence of water. It is found that these amino acids are encapsulated in the order of His > Phe > Tyr > Trp, and it is also observed that in almost all cases the D-enantiomers were better encapsulated as compared to the L-enantiomers. In all cases, encapsulation of D- and L-enantiomers of aromatic α-amino acids increased with increase of the hydrophobic chain length of the gemini surfactants.
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Sharma L, Saroj, Singh N. Reverse Micellar Encapsulation of d- and l-Enantiomers of Some Aromatic α-Amino Acids and Nucleobases by Glucose-Derived Non-ionic Gemini Surfactants in Neat n-Hexane. J SURFACTANTS DETERG 2014. [DOI: 10.1007/s11743-014-1595-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Novel glucose derived non-ionic gemini surfactants as reverse micellar systems for encapsulation of d- and l-enantiomers of some aromatic α-amino acids in n-hexane. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0107-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Amphiphilk carbohydrates as a tool for molecular recognition in organized systems. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/bfb0119260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Affiliation(s)
- Miloslav Cerný
- Department of Organic Chemistry, Faculty of Science, Charles University, Albertov 2030, 12840 Prague, Czech Republic
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Maunier V, Boullanger P, Lafont D, Chevalier Y. Synthesis and surface-active properties of amphiphilic 6-aminocarbonyl derivatives of d-glucose. Carbohydr Res 1997. [DOI: 10.1016/s0008-6215(96)00336-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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