n. (context organic chemistry English) Any polycyclic aromatic hydrocarbon containing a rectilinear arrangement of fused benzene rings.
The acenes or polyacenes are a class of organic compounds and polycyclic aromatic hydrocarbons made up of linearly fused benzene rings. The larger representatives have potential interest in optoelectronic applications and are actively researched in chemistry and electrical engineering. Pentacene has been incorporated into organic field-effect transistors, reaching charge carrier mobilities as high as 5 cm/Vs.
The first 7 unsubstituted members are listed in table 1.
Number of rings
78.11 g/ mol
128.17 g/ mol
178.23 g/ mol
228.29 g/ mol
278.35 g/ mol
328.41 g/ mol
378.46 g/ mol
The last members, hexacene and heptacene, are very reactive and have only been isolated in a matrix. However, bis(trialkylsilylethynylated) versions of hexacene and heptacene have been isolated as crystalline solids.