DOPING OF POLYANILINE AND DERIVATIVES INDUCED BY X-RAY-RADIATION

Thin films of chemically synthesized polyaniline and poly(o-methoxyani line) were exposed to ionizing X-ray radiation and characterized by ra diation induced conductivity measurements, ultraviolet-visible spectro scopy, electron paramagnetic resonance, electrical conductivity and so lubility measurements. Samples irradiated in vacuum or dry Oxygen atmo sphere did not have their electronic spectra changed. However, under h umid atmosphere the energy of the excitonic transition was decreased a nd accompanied by a great conductivity increase. The results indicate that doping of polyaniline can be induced by X-ray radiation which mig ht be of great interest for applications on lithography and microelect ronics.