Interfacial Properties in Langmuir Monolayers and LB Films of DPPC with Partially Fluorinated Alcohol (F8H7OH)

Two-Component Langmuir Monolayers and LB Films of DPPC with Partially Fluorinated Alcohol (F8H9OH)

“…5 , as a function of π . The ordered domain ratio for the entire compositions here increases monotonically with increasing π and finally reaches 90 at 30 mN m 1 , which is the same behavior as the F8H7OH and F8H11OH systems 11,20 . Therefore, this result supports the evidence of no fluidizing effect of F8H9OH on DPPC monolayers.…”

“…The calculated x and Δε are listed in Table 1, where the values for the other binary systems of DPPC/F8HmOH are also listed for comparison purpose 11,12,20 . The x value for all the systems except for m 5 is quite larger in magnitude in the small X F8HmOH region.…”

“…The formation of surface micelles is often observed in the LB film for partially fluorinated compounds 17,18,38 . Therefore, the key factors to form the 2D micelle are considered to be a weak van der Waals interaction between the fluorocarbons 20 and a further reclining fluorocarbon moieties at the linkage CF 2 -CH 2 . Considering the fact that no micelle is formed for F8H5OH and F8H11OH 11,12 , this result suggests that the stability of surface micelles strongly depends on the total hydrophobic chain length and/or the degree of fluorination in hydrophobic chains.…”

“…The miscibility between the two components was systematically investigated on macro/nanoscale. Furthermore, compared to the previous data for the binary DPPC/F8HmOH systems 11,12,20 , we describe a relationship between the fluorination degree in F8HmOH and interaction with DPPC monolayers.…”

Supramolecular Architecture and Electrical Properties of a Perylene Derivative in Physical Vapor Deposited Films

“…Therefore, a broad range of application is based on perylene thin films, such as light-emitting diodes (LEDs), 9 transistors, 10 solar cells 8 and a variety of sensors for detecting dopamine, 11 pesticides, 7 and metallic ions 12,13 . Langmuir, 14,15 Langmuir-Blodgett (LB), 16,17 Layer-by-Layer (LbL), 16,18 spin-coating, 19,20 casting 21,22 and physical vapor deposition (PVD) 10,23 techniques are the most frequently applied in the fabrication of organic-based nanostructured films. In particular, PVD is one of the most common deposition technologies of small organic molecules, displaying high control on the supramolecular architecture of the films 24,25 Indeed, the molecular organization plays an important role and mediates the electrical and optical properties of the films toward optimization of the device performance 26 .…”