Ym. Koo et al., MONOLAYERS OF POLYMERIZABLE LIQUID-CRYSTAL AND IN-SITU INTERFACIAL POLYMERIZATION AT THE AIR-WATER-INTERFACE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 294, 1997, pp. 399-402
The pi-A isotherm and transfer characteristics of polymerizable liquid
crystals spread at the air-water interface were investigated. The lim
iting areas of n-[(4-cyano-4'-biphenyl)oxy] alkyl vinyl ether (CN-n-M)
homologues series of n = 8, 10, and 11 were about 10, 13, and 17 Angs
trom(2)/molecule respectively, and smaller than the area of hydrophili
c cyanobiphenyl group. All the CN-n-M formed apparently stable monolay
ers and the transferred type of pure CN-11-M monolayer on the hydrophi
lic surface was Z-type for the first several layers. The monolayer of
a mixture with poly(amic acid) salts at 25 mN/m was polymerized by UV-
irradiation.