Langmuir-Blodgett films of random copolymers of fluoroalkyl(meth)acrylate and methacrylic acid: fabrication and X-ray diffraction study

Langmuir-Blodgett (LB) films of amphiphilic fluorinated copolymers were fabricated and studied by X-ray diffraction. Although these films exhibit poor interlayer periodicity, they possess a uniform thickness even in the case of very thin films of one bilayer (22 A). This feature was used to obtain complex LB structures (superlattices) with alternation of copolymer and fatty acid bilayers. X-ray diffraction data proved the regular periodic organization of these structures and allowed us to calculate the electron density distribution across the superlattices.