An epoxy based polymer with nonlinear optical azo chromophores was des
igned to contain anionic groups to induce water solubility and self as
sembly. Using this polyanion with a polycation, multilayers were prepa
red on a glass substrate by alternating adsorption from dilute aqueous
solutions. The azo chromophores in the confined layer of the polyanio
n in the multilayer films self-assemble into a noncentrosymmetric alig
nment and demonstrate second order optical nonlinearity (d(33) = 19 pm
/V).