Diketopyrrolopyrrole based polymers for n-type organic electrochemical transistors

Organic electrochemical transistors (OECTs) find applications in biosensing and bioelectronics. Availability of p- and n-type OECT materials with balanced performance is key to the development of OECT-based circuits for performing multiplexing and signal processing functions in bioelectronic devices. However, the performance of n-type OECT materials lags behind the best p-type materials by several orders of magnitude and there is a clear need for the development of new n-type OECT materials. Here, we report a diketopyrrolopyrrole (DPP) based polymer as a potential candidate material for n-type OECTs. We fabricated DPP-based OECTs and report stable operation of the devices in an aqueous electrolyte