Synonyms:40 Thinner;50 Thinner; 80 Thinner; Aliph. compds., hydrocarbons; Aliph. hydrocarbons;Aliph. hydrocarbons, C³1; Alkyl compounds; C³1 hydrocarbons; Exx-Print 588D; Exxon Naphtha 6; Farbasol; Hydrocarbon;LAUS; Lactol Spirits; MCS 1238; Satd. aliph. hydrocarbons; Satd. hydrocarbons;Saturated hydrocarbons; Solvent H 0
99% *data from raw suppliers
The study investigates the hierarchical self-assembly of semifluorinated alkanes (SFAs) at the air/water interface, focusing on three specific molecules: F12H12 (perfluoro(dodecyl)dodecane), F12H20 (perfluoro(dodecyl)eicosane), and F11H1-core-H12 (1,4-dibromo-2-((perfluoroundecyl)methoxy)-5-(dodecyloxy)benzene). These molecules are known for their unique properties due to the strong incompatibility between their fluorocarbon and hydrocarbon blocks, leading to local phase separation and the formation of stable Langmuir monolayers. The researchers used neutron reflectivity, scanning force microscopy (SFM), and Kelvin probe force microscopy (KPFM) to analyze the molecular orientation, packing, and morphology of these monolayers. The study found that all three SFAs form surface micelles, but with different morphologies and packing configurations. F12H12 forms circular or spherical cap micelles, F12H20 forms hexagonal and elongated micelles, while F11H1-core-H12 forms elongated, ribbon-like micelles. The molecular orientation and packing were influenced by the symmetry of the F- and H-block lengths and the presence of an aromatic core in F11H1-core-H12. The results highlight how chemical modifications can tailor the hierarchical self-assembly of SFAs, with potential applications in molecular interfacial film stabilization for colloidal systems.
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