Preparation of polyperinaphthalene thin films by excimer laser ablation

A novel method for film formation of polyperinaphthalene (PPN), one of the low dimensional conducting polymers, is proposed. It is found that excimer laser ablation (ELA) of mixture targets of PTCDA with Co particles (PTCDA/Co) with 308nm (XeCl) at a fluence more than 0.8J cm -2 pulse -1 leads to produce effectively fragments without anhydride groups of PTCDA. FT-IR and Raman spectroscopy reveals that ELA of PTCDA/Co enables us to obtain better-defined PPN films with electric conductivity of ∼1x10 -2 Scm -1 on a substrate at 300°C.