| Autor: |
Maya Dvolaitzky, Marie Alice Guedeau-Boudeville |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
New Trends in Physics and Physucal Chemistry of Polymers ISBN: 9781461278580 |
| DOI: |
10.1007/978-1-4613-0543-9_8 |
| Popis: |
The four possible stereomers of a chiral surfactant with two asymmetric centers within the polar head group have been synthesized and their absolute configuration determined by X-ray diffraction. One of the diastereomers exhibits a chiral discrimination when spread on water interface: the monolayer racemic film undergoes a phase transition from a liquid-expanded towards a liquid-condensed phase upon compression, while the pure enantiomers only have a liquid-expanded phase, as revealed by the measured pressure-area isotherms. The transition pressure-composition diagram indicates that heterochiral interactions are favored. Our results are compared to predictions of Andelman and de Gennes1 based upon a statistical model. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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