Boosting the Performance of PEDOT:PSS Based Electronics Via Ionic Liquids

Abstract

The conducting polymer poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) offers superior advantages in electronics due to its remarkable combination of high electrical conductivity, excellent biocompatibility, and mechanical flexibility, making it an ideal material among electronic skin, health monitoring, and energy harvesting and storage. Nevertheless, pristine PEDOT:PSS films exhibit limitations in terms of both low conductivity and stretchability, while conventional processing techniques cannot enhance these properties simultaneously, facing the dilemma that highly conductive interconnected PEDOT:PSS domains are susceptible to tensile strain. Via modifying PEDOT:PSS with ionic liquids (ILs), not only a synergistic enhancement of the electrical and mechanical properties can be achieved, but also the requirements for the printable bioelectronic are satisfied. In this comprehensive review, we have undertaken the task of providing a thorough examination of the mechanisms and applications of ILs as modifiers for PEDOT:PSS. First, the theoretical mechanisms governing the interactions between ILs and PEDOT:PSS is discussed detailly. Then, we have reviewed the enhanced properties and the elucidation of the underlying mechanisms achieved through the incorporation of ILs. Next, specific applications of ILs‐modified PEDOT:PSS relevant to bioelectronic devices are presented. Lastly, we offer a concise summary and engage in a discussion regarding the opportunities and challenges in this exciting field.This article is protected by copyright. All rights reserved

PEDOT:Nafion for Highly Efficient Supercapacitors

“…It is clear that even though the presence of PSS is beneficial from the point of view of polymer processing, since it allows PEDOT to be dispersed under aqueous conditions, its presence has a deteriorating effect on polymer’s conductivity. Consequently, looking for a more effective counterion for PEDOT is one of the challenges of organic electronics . Nafion is a copolymer in the form of a tetrafluoroethylene hydrophobic backbone containing highly hydrophilic sulfonate groups .…”

“…Consequently, looking for a more effective counterion for PEDOT is one of the challenges of organic electronics. 21 Nafion is a copolymer in the form of a tetrafluoroethylene hydrophobic backbone containing highly hydrophilic sulfonate groups. 13 As a water-soluble ionomer with high ionic conductance, Nafion has been commonly used in proton conducting membranes.…”