Lysander Presser

1 Introduction Organic electronics have emerged as a transformative field at the interface of chemistry, physics, and materials science, driving the development of flexible, scalable, and cost-effective technologies [1-3]. Devices such as organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs), and organic photovoltaics (OPVs) rely on functional π-conjugated materials with precisely defined electronic structure and solid-state organization [4, 5].

Abstract The bromine-lithium exchange-borylation-Suzuki sequence efficiently furnishes phenothiazine-terephthalonitrile donor-acceptor dyads and triads in high yields. In contrast to most phenothiazine-acceptor conjugates the title compounds are ligated in p-position to the phenothiazine nitrogen atom. Moreover, the acceptors are either directed linked or ligated by an arylene bridge and p-anisyl N-substituents on the phenothiazine are chosen to lock the tricycle into an intra-configuration.