Heptacene isolated after 75 years
By 
Katrina Krämer2017-03-31T13:06:00
Compound made of seven fused benzene rings could find applications in solar cells or light emitting diodes
Seventy-five years after the first failed synthesis, heptacene has now been isolated by researchers in Germany and the US.1 The compound, which consists of seven linearly fused benzene rings, is the longest of the acenes ever made as a pure solid.