Bithiazolidinylidene polymers: synthesis and electronic interactions with transition metal dichalcogenides

We describe the synthesis of electron acceptors consisting of bithiazolidinylidene (BT) derivatives incorporated into solution processible polymers. Novel BT-containing polymers displayed p-doping behavior when in contact with the n-type transition metal dichalcogenide (TMDC) MoS(2). A work function (WF) increase of MoS(2), resulting from contact with BT polymers, was measured by Kelvin probe force microscopy (KPFM), representing the first example of polymer p-doping of MoS(2), which is beneficial for advancing the design of electronically tailored TMDCs.