Small-Angle Neutron Scattering Investigation of Supramolecular Assemblies in Ternary Systems of Alkyldimethylamine Oxide/Cinnamic Acid/Water

Okamura, Hiroshi; Imae, Toyoko; Takagi, Katsuhiko; Sawaki, Yasuhiko; Furusaka, M.

doi:10.1006/jcis.1996.0277

Cited by 20 publications

(30 citation statements)

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“…10 to 14). Okamura et al (25) investigated supramolecular assemblies in ternary systems of alkyldimethyl amine oxide (C n DAO, n=12, 16)/Cinnamic acid/ water by small angle neutron scattering(SANS). The fine structures of molecular assemblies were quantitatively examined for solutions with different mixing ratios.…”

Section: Dao and Odao) It Was Observed That Electrophoretic Mobility Cmentioning

confidence: 99%

Amine Oxides: A Review

2006

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Section: Dao and Odao) It Was Observed That Electrophoretic Mobility Cmentioning

confidence: 99%

Amine Oxides: A Review

2006

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“…Before answering this question, we have to state that it is not clear whether the average aggregation number changes as the racemic nematic system is converted into the intrinsic chiral nematic one. Any change in the average aggregation number, as the racemic amphiphile in the racemic nematic phase is substituted by its L-enantiomer may be investigated by X-ray 5 or neutron 16,17 diffraction studies.…”

Section: The Origin Of the Change Of Mass Density In Racemic Nematic ...mentioning

confidence: 99%

Mass density measurements as a tool to distinguish between micelle size and shape in nematic and chiral nematic phases

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Akpınar

2003

Phys. Chem. Chem. Phys.

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The relative alteration in micelle size and micelle shape brought about by two sets of specific solutes have been investigated by mass density measurements at constant composition and temperature. The mass density of the first set of solutes, phenol, benzene, cyclohexanol and cyclohexane, was measured in the same host phase and found to change in the order: phenol > cyclohexanol > benzene > cyclohexane. The contribution of the solutes to the mass density of the host phase was interpreted to arise from the capability of the hydrophilic group and the hydrophobic part of the solutes to interact with the corresponding region of the host micelle. The second set consisted of racemic amphiphilic mixtures and their enantiomers, decyl-and dodecyl-esters of serine and alanine. It was found that the mass density increases in the serine phases but decreases in the alanine ones as the DL-racemic amphiphiles of the nematic phases were replaced by their L-isomers. These phenomena were shown to arise from a definite arrangement of the head groups in the racemic nematic and intrinsic chiral nematic phases. Furthermore, on the basis of the mass density difference between the achiral/induced chiral nematics and the racemic/intrinsic chiral nematics, a distinction between the induced chiral nematic phases and the intrinsic chiral ones is possible.

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“…The surfaces of Langmuir-Blod-sicular bilayers than on micelles (14,(16)(17)(18)(19) DA cations and by directing aromatic groups to-phase by the Langmuir method are accumulated on solid ward the interior of the aqueous subphase. When the Langmuir substrate, lamellar structures with repeating units are confilm is maintained for long periods at a constant surface pressure, structed.…”

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confidence: 99%