Functionalized Higher Acenes:Hexacene and Heptacene

摘要

The electronic properties of pentacene are exceptionally well-known,making it a common benchmark in the field of organic electronics.Higher acenes,however,remain virtually unknown.Hexacene has received some crystallographic attention and appears in the solid state to follow a homologous series with tetracene and pentacene;however,there was insufficient data to actually solve and refine the structure.Its low stability,combined with poor solubility,has made its preparation and study difficult.Heptacene is even less well understood.Of the few reported syntheses,all have been called into question.The only characterization data reported to date are a combustion analysis and a UV-vis spectrum with estimated NIR bands.