Influence of the molecular weight and size distribution of PSS on mixed ionic-electronic transport in PEDOT:PSS

• DOI: 10.1039/d2py00271j
• Publication Date: 2022-03-22T15:41:10Z
• Authors: Chun-Yuan Lo; Yuhang Wu; Elorm Awuyah; Dilara Meli; Dan My Nguyen; Ruiheng Wu; Bohan Xu; Joseph Strzalka; Jonathan Rivnay; David C. Martin; Laure V. Kayser
• Keywords: 01 natural sciences; 0104 chemical sciences

The commercially available polyelectrolyte complex poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is ubiquitous in organic and hybrid electronics. As such, it has often been used as a benchmark material for fundamental studies the development of new electronic devices. Yet, most on PEDOT:PSS have focused its conductivity dry environments, with less consideration given to ion transport, coupled ionic-electronic charge storage properties aqueous environments. These are essential applications bioelectronics (sensors, actuators), devices, electrochromic displays. Importantly, past mixed transport neglected consider how molecular structure PSS affects transport. Herein, we therefore investigated effect weight size distribution morphology both overall performance electrochemical transistors (OECTs). Using reversible addition-fragmentation chain transfer (RAFT) polymerization two different agents, six samples monomodal, narrow (