Naslov
The Structure of Percolating Lipid Monolayers

Autori
Risović, Dubravko ; Frka, Sanja ; Kozarac, Zlatica

Izvornik
Journal of colloid and interface science (0021-9797) 373 (2012), 1; 116-121

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
lipid monolayers ; lattice structure ; percolation ; fractal ; Brewster angle microscopy ; compressibility ; DPPC ; DPPA ; hexadecanol ; stearic acid

Sažetak
The lattice structure and in plane molecular organization of Langmuir monolayer of amphiphilic material is usually determined from grazing incidence X-ray diffraction (GIXD) or neutron reflectivity. Here we present results of a different approach for determination of monolayer lattice structure based on application of fractal analysis and percolation theory in combination with Brewster angle microscopy. The considerations of compressibility modulus and fractal dimension dynamics provide information on percolation threshold and consequently by application of percolation theory on the lattice structure of a monolayer. We have applied this approach to determine the monolayer lattice structures of single chain and double chain lipids. The compressibility moduli were determined from measured -A isotherms and fractal dimensions from corresponding BAM images. The monolayer lattice structures of stearic acid, 1-hexadecanol, DPPC and DPPA, obtained in this way conform to the corresponding lattice structures determined previously by other authors using GIXD.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Geologija, Kemija

Napomena
Rad je prezentiran na skupu The 1st International Symposium on Colloids and Materials : New Scientific Horizons, održanom od 08.-11.05.2011., Amsterdam, Nizozemska ; Dongyuan Zhao, Julian Eastoe i M. Arturo Lopez-Quintela (ur.).

POVEZANOST RADA