The spreading behavior of a new type of chiral compound, namely a series of optically active macrocycloamides ((P)-(-)-1, (P,P)-(+)-2, (P,P,P)-(+)-3, and (P,P,P,P)-(+)-4) consisting of the helical chiral unit 1,12- dimethylbenzo[c]phenanthrene-5,8-dicarboxylate, and dianiline derivatives, on the water surface was investigated by measuring surface pressure (π)-area (A) isotherms, with the aim of producing a new type of chiral Langmuir- Blodgett film. Among the four compounds investigated, (P)-(-)-1 and (P,P)- (+)-2 formed condensed monolayers. Moreover, the monolayer of (P)-(-)-1 could be successively transferred onto solid supports by both downward and upward strokes, yielding Y-type LB films. An optically active LB film based on helical chirality was produced for the first time. The properties of the chiral LB film are discussed.
ASJC Scopus subject areas
- Colloid and Surface Chemistry