Texture features of long-chain fatty acid monolayers at high pH of the aqueous subphase

Circularly Polarized Lanthanide Luminescence from Langmuir–Blodgett Films Formed from Optically Active and Amphiphilic EuIII‐Based Self‐Assembly Complexes

“…The Langmuir films of 1 3 Eu and 2 3 Eu were identified by monitoring the pressure-area isotherms; where the exponential increase in surface pressure indicated transition from liquid-expanded phases to liquid-condensed and solid phases, as shown in Figure 3. 39 These films were seen to collapse at 34 mN m 40,41 and are in agreement with the complexes remaining intact at the air-water interface with supramolecular organization of 1 3 Eu and 2 3 Eu, as monolayers. Excellent stability properties were exhibited by films of both complexes with no pressure decrease observed on keeping the films at the liquid-condensed phase for an extended period of time (>1 hour, inset Figure 3).…”

The effect of fatty acid surfactants on the uptake of ozone to aqueous halogenide particles

“…Since these mixed component films were well defined in composition, these results cannot be directly compared to our qualitative results on mixed films. Some other studies have related the effectiveness of fatty acids to act as barriers for phase transfer to the nature of the head group (polarity), the pH and the temperature (Barnes, 1997;Johann and Vollhardt, 1999;Latif and Brimblecombe, 2004), parameters which have also a strong impact on the phase state properties of the monolayers.…”

Langmuir monolayers and Langmuir–Blodgett films of 1-acyl-1,2,4-triazoles

“…A number of publications deal with fatty acids at the air-water interface that have different numbers of carbon atoms. Besides fatty acids of 12 [1,4,5], 14 [1,[6][7][8][9][10][11][12], 16 [6][7][8][9], and 18 [1,6,9,[13][14][15][16][17] carbon atoms, which are investigated with respect to their Langmuir isotherms and to their compression on the water surface up to the film collapse of the monolayer, also fatty acids that have odd numbers of carbon atoms, e.g. from C15 to C21 [6,[18][19][20][21][22][23], or more than 18 carbon atoms, e.g.…”