  We report the observation of superconductivity at 33 K in K-doped
1,2:8,9-dibenzopentacene (C30H18). This is higher than any Tc reported
previously for an organic superconductor besides the alkali-metal doped C60.
This finding provides an indication that superconductivity at much higher
temperature may be possible in such system, if PAHs with longer benzene rings
can be synthesized.
