X-ray and neutron scattering from spread monolayers and lb films

Abstract

The use of X-ray and neutron scattering techniques for the study of spread films and deposited Langmuir Blodgett (LB) films are discussed The implications for LB deposition of reflectivity results from docosanoic acid films spread on cadmium chloride solution are discussed. Recent X-ray reflectivity studies of spread films of three phthalocyanine derivatives are used to explain the shapes of their surface pressure-surface area isotherm: and their deposition properties. Neutron reflectivity from 4 cyano 4n-pentyl terphenyl have shown the possibility of monolayer to multilayer transition: on the aqueous subphase surface. Other types of scattering measurement and their future applications are briefly discussed.