Poly(phenylacetylene)(PPA) Langmuir Blodgett(LB) multilayer films were prepared and applied to the field of a separation funtional photoreceptor as a charge generation layer for the first time.From the π A curve

it was found that the PPA monolayer has anisotropies and relaxation of surface pressure.TEM photograph showed the orientation and arrangement of PPA chains in the multilayers.Investigations of transfer ratios and XPS indicated that the deposition of multilayers is uniform.Using PPA LB mutilayer films as a charge generation layer

the photoreceptor exhibited surface potential(V0)=1345V

percentage of potential discharge after one second exposure(△V1s)=65.05% and half decay time(t1/2)=0.58s.its photoconductivities are much better than those of the photoreceptor using PPA coating film.