Formation of Chiral Interdigitated Multilayers at the Air-Liquid Interface Through Acid-Base Interactions
- 20 December 1996
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 274 (5295) , 2046-2049
- https://doi.org/10.1126/science.274.5295.2046
Abstract
Thin interdigitated films composed of a long-chain, water-insoluble chiral acid (p -pentadecylmandelic acid of absolute configuration R ) and a water-soluble chiral base (phenylethylamine, R′ ) were constructed at the air-solution interface. The ( R, R′ ) structure was characterized to near-atomic resolution by grazing-incidence x-ray diffraction (GIXD). The two diastereomeric systems, ( R, R′ ) and ( R, S′ ), demonstrate similar surface pressure-molecular area isotherms, but their structures are completely different on the molecular level, as monitored by GIXD. Complementary data on these two architectures were provided by atomic force microscopy.Keywords
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