N.I.Voronkina, K.B.Vodolazhskii, A.V.Tolmachev, B.M. Krasovitskii, N.A. Popova, I.V. Lisova*
Received July 20, 1998
Characteristics of fluorescen€e have been studied for three
oxadiazole derivatives (OXD) incorporated in Langmuir-Blodgett (LB)
films mixed with poly(methylmetacrylate). As the OXD concentration
increases, the monolayer structurization process becomes subdivided
into two stages. At the first one, limited mixing of components in
monolayers occurs while at the second, the dopant is released as a
separate phase of the monolayer. In LB films, molecular aggregates
have been found which are not observed in other phase OXD states (toluenic
solutions, spin-coating and polycrystalline films). Analysis of these
data combined with computer-aided simulation of OXD molecules space
orientation at the air-water interface allowed to present some versions
of their close packings in LB layers.