Modular Synthesis and Electronic and Hole‐Transport Properties of Monodisperse Oligophenothiazines

Monodisperse oligophenothiazines are rapidly synthesized in good yields by use of Suzuki arylation. These well defined oligomers reveal both highly fluorescence and low oxidation potentials. As a consequence of intense electronic coupling as supported by cyclic voltammetry a selected trimer shows hole-transport properties in a hole-conductor-only set-up of a diode with relatively low on-set voltage.