Spectral characterization of?-Cyclodextrin : Triton X-100 complexes

Smith, Vonda K.; Ndou, Thilivhali T.; Peña, Arsenio Muñoz de la; Warner, Isiah M.

doi:10.1007/bf01061077

Cited by 67 publications

(40 citation statements)

References 23 publications

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“…After this maximum the shift difference levels off. Similar observations, in particular upfield changes of β-CD cavity proton resonance in the presence of Triton X-100 surfactants, were reported by Smith et al (9).…”

Section: Nmr Chemical Shift and Resonance Peak Shapessupporting

confidence: 72%

“…Interactions between cyclodextrin and nonionic surfactants have been studied previously using methods such as fluorescence (8,9), nuclear magnetic resonance (9), calorimetric titrations (10,11), and surface tension (12)(13)(14). Most of these studies indicate that an interaction occurs with the hydrophobic part of the surfactants.…”

Section: Fig 1 Structural Formulae and 1 H Nmr Spectra (At 27mentioning

confidence: 98%

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Interaction between a Novel Gemini Surfactant and Cyclodextrin: NMR and Surface Tension Studies

Abrahmsén-Alami

Alami

Eastoe

et al. 2002

Journal of Colloid and Interface Science

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Section: Nmr Chemical Shift and Resonance Peak Shapessupporting

confidence: 72%

Section: Fig 1 Structural Formulae and 1 H Nmr Spectra (At 27mentioning

confidence: 98%

Interaction between a Novel Gemini Surfactant and Cyclodextrin: NMR and Surface Tension Studies

Abrahmsén-Alami

Alami

Eastoe

et al. 2002

Journal of Colloid and Interface Science

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“…For this reason this approach is rarely used for surfactant-cyclodextrin association processes [227,228]. The relation used is…”

Section: Modelling Cd:s Association At Pre-micelle Concentrationsmentioning

confidence: 99%

The formation of host–guest complexes between surfactants and cyclodextrins

Valente

Söderman

2014

Advances in Colloid and Interface Science

184

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Cyclodextrins are able to act as host molecules in supramolecular chemistry with applications ranging from pharmaceutics to detergency. Among guest molecules surfactants play an important role with both fundamental and practical applications. The formation of cyclodextrin/surfactant host-guest compounds leads to an increase in the critical micelle concentration and in the solubility of surfactants. The possibility of changing the balance between several intermolecular forces, and thus allowing the study of, e.g., dehydration and steric hindrance effects upon association, makes surfactants ideal guest molecules for fundamental studies. Therefore, these systems allow for obtaining a deep insight into the host-guest association mechanism. In this paper, we review the influence on the thermodynamic properties of CD-surfactant association by highlighting the effect of different surfactant architectures (single tail, double-tailed, gemini and bolaform), with special emphasis on cationic surfactants. This is complemented with an assessment of the most common analytical techniques used to follow the association process. The applied methods for computation of the association stoichiometry and stability constants are also reviewed and discussed; this is an important point since there are significant discrepancies and scattered data for similar systems in the literature.In general, the surfactant-cyclodextrin association is treated without reference to the kinetics of the process. However, there are several examples where the kinetics of the process can be investigated, in particular those where volumes of the CD cavity and surfactant (either the tail or in special cases the head group) are similar in magnitude.This will also be critically reviewed.

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“…In addition, accumulation of surfactants can cause fouling of the ion source, and may limit the sensitivity in electrospray ionization-mass spectrometry [9][10][11]. (v) Surfactant monomers in the running buffer will more likely form inclusion complexes with host molecules [12]. Therefore, competitive binding of free surfactant monomers with host molecules will interfere with hostguest interaction of the analyte, and may result in poor separations.…”

Section: Introductionmentioning

confidence: 98%

Novel anionic copolymerized surfactants of mixed achiral and chiral surfactants as pseudostationary phases for micellar electrokinetic chromatography

et al. 2004

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One disadvantage of amino acid-based chiral selectors for micellar electrokinetic chromatography (MEKC) is that either they have very low solubility or are insoluble at acidic pHs. In order to increase solubilities at lower pHs, we have synthesized a highly water-soluble achiral surfactant and copolymerized it with an amino acid-based chiral surfactant. These two surfactants were polymerized either separately or at various molar rations of binary solutions, yielding pure molecular or copolymerized surfactant (CoPS), respectively. All surfactants were characterized by use of several analytical techniques prior to using them as novel pseudostationary phases in MEKC. The chromatographic performance of the CoPS in MEKC was tested with chiral and achiral analytes. The highly soluble sulfate head group significantly increased the solubility of amino acid-based CoPS over a wide range of pH. Three chiral binaphthyl derivatives were tested and each surfactant system was found to have different selectivity.

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Spectral characterization of?-Cyclodextrin : Triton X-100 complexes

Cited by 67 publications

References 23 publications

Interaction between a Novel Gemini Surfactant and Cyclodextrin: NMR and Surface Tension Studies

Interaction between a Novel Gemini Surfactant and Cyclodextrin: NMR and Surface Tension Studies

The formation of host–guest complexes between surfactants and cyclodextrins

Novel anionic copolymerized surfactants of mixed achiral and chiral surfactants as pseudostationary phases for micellar electrokinetic chromatography

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