Langmuir-Blodgett (LB) multilayers were prepared from poly(N-vinyl-N'-
alkylimidazolium bromide)s synthesised using long-chain alkyl bromides
. In X-ray reflection experiments the best multilayers displayed five
orders of Bragg peaks. The derived bilayer spacings and an FTIR study
of selected films indicate that these LB multilayers have Y-type struc
tures in which the long alkyl side chains interdigitate.