A study of the layer structure in a calix-8-arene Langmuir-Blodgett film by reflectometry

► X-ray reflectometry measurements made on Langmuir-Blodgett films of calix-8-arene ► Simulations of the reflectivity profile made for three structural models ► Pinched loop conformation of calix-8-arene produced correct thickness and spacing ► Calculated and experimental profiles in excellent agreement for pinched loop ► Profile incompatible with “bowl and chain” and pleated loop conformations.