Energetics and structures of the tilted phases of fatty acid Langmuir monolayers

Abstract

Langmuir monolayers are monomolecular deep films composed of amphiphilic molecules which are typically confined to a water/air interface in a bi-dimensional structure.

Heads or tails: Nanostructure and molecular orientations in organised erucamide surface layers

“…Such molecular tilting has been previously observed in surfactant bilayers [36]. This interpretation is also consistent with a recent study by Toledano et al [49] which observed tilted phases in fatty acid Langmuir monolayers at large molecular areas. The -cis double bond (C13-C14) in the erucamide molecular structure could also contribute to "kinking" and thus an overall shorter chain length than that for a fully stretched saturated hydrocarbon chain [48].…”

Controllable-assembled functional monolayers by the Langmuir–Blodgett technique for optoelectronic applications

“…Temperature is also an essential factor affecting the phase transition process. 51,57,58,[64][65][66][67] Temperature can affect the phase change of the film by influencing the energy exchange process; temperature favors the diffusive motion of molecular particles and intermolecular interactions. For example, the transition area of the ''plateau'' involves a special process in which a transformation process from one phase to another exists, and temperature can accelerate this process.…”