Recent advances in the mixed systems of bolaamphiphiles and oppositely charged conventional surfactants

Yan, Yun; Lu, Tiecheng; Huang, Jianbin

doi:10.1016/j.jcis.2009.04.082

Cited by 50 publications

(34 citation statements)

References 101 publications

(154 reference statements)

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“…The dimeric features of these surfactants make them useful as coatings on smooth solid materials, where one end is attached to the surface of electrodes, polyelectrolyte, or nanoparticles, whereas the other headgroup is used for solubilization in water and for interactions with solutes [300]. The development of synthetic routes for novel bolaform surfactants [301][302][303][304][305] makes it possible to obtain diverse surfactant architectures and self-assembled structures. Those structures show a diverse range of morphologies, ranging from nanofibers [306,307] and nanotubes [308,309] to vesicles [310,311].…”

Section: Bolaform Surfactantsmentioning

confidence: 99%

The formation of host–guest complexes between surfactants and cyclodextrins

Valente

Söderman

2014

Advances in Colloid and Interface Science

183

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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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Section: Bolaform Surfactantsmentioning

confidence: 99%

The formation of host–guest complexes between surfactants and cyclodextrins

Valente

Söderman

2014

Advances in Colloid and Interface Science

183

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“…The hydrophobic tail of compound BA has no double bonds, which would allow the formation of monolayer vesicles, where the OH-end group would be directed to the inside of the vesicle and the N group to the outside. Due to its long hydrocarbon chain, BA can arrange itself in a U-shape, reported in the literature for similar molecules [35,36].…”

Section: Synthesismentioning

confidence: 82%

Synthesis and study of the complex formation of a cationic alkyl-chain bola amino alcohol with DNA: in vitro transfection efficiency

et al. 2015

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Recent studies point out that bolaamphiphiles can be used in non-viral gene therapy. Due to their bipolar character, they may span a membrane and thus stabilize or destabilize it, which could be relevant for DNA transfer across a biological membrane. Since there are only very few studies on bolaamphiphile application in DNA transfection, it is difficult to assess whether they will bring additional advantages to the class of non-viral vectors. A bolaamphiphile with a hydrophobic chain of 22 carbon atoms with trimethylammonium and hydroxyl groups at each end was synthesised

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“…5. According to Yan et al [37], bipolar nature of amphiphilic is mostly responsible for multilamellar vesicles. In the present study, the hydrophobicity of fatty acids mediates the close arrangement with biosurfactants molecule or it may be due to the non-ionic nature of biosurfactants leads to the layer-by-layer formation resulting with multilayer structures.…”

Section: Discussionmentioning

confidence: 99%

“…Till date, vesicle formation is generally initiated under in vitro conditions by mixing two or three components (fatty acids, lipids, proteins, carbohydrates and surface-active components) in aqueous or organic media in the presence of external stimulants like temperature and agitation and internal stimulants like, pH, volume, nature of the solvent, etc. In most of the cases, packing parameter P is identified as an important factor significantly related with the formation and stability of vesicles [37].…”

Section: Introductionmentioning

confidence: 99%