6533b832fe1ef96bd129af1d
RESEARCH PRODUCT
Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface
Otto AlbrechtW. CummingAndré LaschewskyW. KreuderHelmut Ringsdorfsubject
Polymers and PlasticsChemistryAir water interfaceLiquid crystallineThermotropic crystalExternColloid and Surface ChemistryChemical engineeringLiquid crystalAmphiphileMonolayerddc:540Materials ChemistryMoleculeOrganic chemistryInstitut für ChemiePhysical and Theoretical Chemistrydescription
Calamitic (rod-shaped) and discotic (disc-shaped) thermotropic liquid crystalline (LC) compounds were spread at the air-water interface, and their ability to form monolayers was studied. The calamitic LCs investigated were found to form monolayers which behave analogously to conventional amphiphiles such as fatty acids. The spreading of the discotic LCs produced monolayers as well, but with a behaviour different from classical amphiphiles. The areas occupied per molecule are too small to allow the contact of all hydrophilic groups with the water surface and the packing of all hydrophobic chains. Various molecular arrangements of the discotics at the water surface to fit the spreading data are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-09-17 |