Instead of using sulfated molecules or the fairly big Buckminster fullerenes recently it became possible to synthesize crystals from the hydrocarbon picene and phenanthrene. Doping the crystal picene and phenanthrene with alkali metals such as potassium or rubidium and annealing for several days leads to superconductivity with transition temperatures up to .
Instead of using sulfated molecules or large Buckminster fullerenes, it is now possible to synthesize crystals from the hydrocarbons picene and phenanthrene. Doping these crystals with alkali metals like potassium or rubidium and annealing them for several days leads to superconductivity with transition temperatures up to .