General Description 2,7-Dihexylbenzo[ lmn ][3,8]phenanthroline-1,3,6,8(2 H ,7 H )-tetrone is a low-molecular weight perylene derivative which is used as a n-type organic semiconductor in field-effect transistors (FETs). They have high electron mobilities and very good on/off current ratios even in the presence of air. They also possess good mechanical properties and good chemical resistance to a wide range of solvents. Application Used as an n-type semiconducting material in organic printed electronics.