Publications by authors named "Ahmad S Abo-Shunnar"
Article Synopsis
- Engineered cationic pyridinium-carboxylate based gemini surfactants (GSs) were synthesized and studied for their interaction with biological membranes, specifically dipalmitoylphosphatidylcholine (DPPC).
- The study utilized two synthetic methods to create various GSs, employing techniques like Brewster angle microscopy and atomic force microscopy to analyze their films' morphology.
- Results showed that INAGS surfactant produced the most hydrophobic and least compressible monolayer, and proximity of the nitrogen atom and carboxylate group in GSs led to aggregation rather than a continuous film.
We report the synthesis and monolayer properties of conventional and gemini surfactants composed of nicotinic acid-based head groups with an emphasis on assessing how chemical structures affect the behavior of monolayers. A combination of Brewster angle microscopy and atomic force microscopy showed that pure hexadecyl nicotinate formed rippled strands in monolayers, and the gemini correspondents with either flexible or rigid organic linkers resulted in lobed-compact domains, which provides a simple method for patterning air-water and solid-air interfaces. The structural differences between conventional and gemini nicotinic acid-based surfactants could be explained by the interplay between line tension (that favors the formation of circular domains), balanced by dipole-dipole repulsion interaction between headgroups, which promotes extended domains.
View Article and Find Full Text PDF