Study of pressure and temperature dependence of electrical properties in new intrinsic semiconducting polyacene quinone radical polymer

We have synthesized several new polyacene quinone radical co-polymers first by condensation and experimentally found a kink at about 1.1 kbar on plots of log d.c. conductivity versus the square root of external pressure in a range from 0.1 to 10 kbar; a possibility of application of Motto's T^1/4 law to higher temperature region of 290-400 K; and a analogue trends of change between d.c. conductivity and spin concentration, with mole fraction of 4,4′(hexafluoroisopropylidene diphthalic anhydride (HFDA) introduced for improving the stability of properties, a plots of log didactic constant versus the square root of pressure not fully obeying the linear relationship expected by Pchl. Here we've given the reasonable explanation of these experimental results.