LB and LS can be used in fabrication of well controlled surfaces. This can be applied in creating molecular level electronic devices by supramolecular assembly at interfaces. It is also possible to prepare one molecule thin electronic devices from for example graphene, carbon nanotubes and nano- or micro-sized metal particles or rods.
Example of supramolecular optoelectronic devices prepared from π-π –stacking molecules by LS deposition:
Langmuir−Schaeffer Films from a π−π Stacking Perylenediimide Dye: Organization and Charge Transfer Properties
Antti Tolkki, Elina Vuorimaa, Vladimir Chukharev, Helge Lemmetyinen, Petri Ihalainen, Jouko Peltonen, Volker Dehm, and Frank Würthner
Langmuir, 2010, 26 (9), 6630–6637
Conjugated photoactive perylendiimide dyes could be fabricated into optoelectronic devices by sequential LS dipping of the dye molecules from air-water interface. The molecules formed columnar aggregates perpendicular to the surface which displayed charge transfer properties that are did not occur in randomly-oriented film of the same molecule prepared by spin coating.