phosphepines. The Pd-catalyzed direct arylation allows the introduction of various
substituents, which tune the absorption/emission in the visible range as well as the redox
properties. All those modifications were rationalized through DFT calculations. The physical
properties of ambipolar phosphepine with diphenylamino substituents inspired us to use it
as a semiconductor in p-type organic field-effect transistors (OFETs).