Pulsed laser deposition of crystal polyaniline thin films

Thin films of polyaniline (PBT), a kind of polyheterocyclic compound with h ydrogen function groups, were deposited by KrF excimer ablation in a vacuum chamber. The laser pulse fluence was selected at 2 J cm(-2) with a pulse d uration of 25 ns. The polymer used in our experiments bears the basic struc ture and frame of many polyheterocyclic compound ramifications. The deposit ion of such a polymer should be helpful for future research when other kind s of function radicals are attached to polyaniline to realise different app lications. The structural and topographic properties of the deposited thin films were analysed by atomic force microscope and X-ray diffraction. The d eposited thin films were observed to have good crystal properties and be co mposed of crystalline cubes with a uniform size of 0.1 mu m. (C) 2000 Elsev ier Science S.A. All rights reserved.