The influence of high pressure and shear strains on some electrophysical properties of polyphthalocyanines

The influence of high pressure and shear strain on conductivity G and capacitance C of non-metallic polyphthalocyanines with different macromolecule lengths and degrees of crosslinking have been studied. Both the G and C of the polymers was found to increase with compression. Similar phenomena were observed during the simultaneous action of high pressure and shear strain on the polyphthalocyanines (PPC). However, in the latter case, the change in G necessitates a lower pressure than for a single compression. Spectral studies show that the effect of pressure and strain of loaded samples on their electrophysical properties is not connected with the chemical structure of the PPCs, but is evidently due to a change in the average separation between regions of continuous conjugation. It was shown that the dimensions of these regions may be increased by preliminary thermal treatment of the PPC.