Swelling of a cluster phase in Langmuir monolayers containing semi-fluorinated phosphonic acids

Semi-fluorinated phosphonic acids form stable nanoscale clusters in Langmuir–Blodgett and self-assembled monolayers

“…8c) as shown previously. 21 The size of these clusters is slightly larger than those measured for the rest of the series of semi-fluorinated phosphonic acids. Table 1 summarizes the size of the clusters measured using RCF and cross-section analysis for the semi-fluorinated phosphonic acids shown in Fig.…”

“…In previous work, we found that LB monolayers of F8H11PO 3 (Fig. 1), transferred onto mica, exhibited monodisperse clusters 21 with a characteristic size of $30 nm. Structures with similar length scales have been observed in LB or solution-cast films of other partially-fluorinated compounds as well.…”

“…The synthesis of the semi-fluorinated phosphonic acid F8H11PO 3 was described previously. 21 The other semi-fluorinated molecules were prepared using analogous strategies and methods.…”

Organophosphonates as anchoring agents onto metal oxide-based materials: synthesis and applications

“…First, clusters of semi-uorinated nonadecylphosphonic acid (F 8 H 11 PO 3 ) were obtained by the Langmuir Blodgett method and then hexadecylphosphonic acid was progressively added. 142 This new acid penetrated clusters of semi-uorinated acid and swelled it since a critical concentration was reached. Beyond this concentration, hexadecylphosphonic acid segregated in a new graed solid phase.…”

Effect of the fluorination degree of hydrophobic chains on the monolayer behavior of unsaturated diacylphosphatidylcholines bearing partially fluorinated 9-octadecynoyl (stearoloyl) groups at the air–water interface

“…It is noted that the low contrast in BAM images is interpreted as reflecting low monolayer density, e.g., LE monolayers, and/or a small difference in the refractive index between lipids and water. Because the difference in the refractive index between fluorocarbons and water is much smaller than that between hydrocarbons and water, fluorinated lipid monolayers are known to sometimes show low contrast in BAM images [45]. Accordingly, the slightly bright phase for DF 8 StPC might reflect to some extent the characteristic optical properties of fluorinated lipid monolayers.…”