Metal‐like Charge Transport in PEDOT(OH) Films by Post‐processing Side Chain Removal from a Soluble Precursor Polymer
Abstract
Herein, a route to produce highly electrically conductive doped hydroxymethyl functionalized poly(3,4‐ethylenedioxythiophene) (PEDOT) films, termed PEDOT(OH) with metal‐like charge transport properties using a fully solution processable precursor polymer is reported. This is achieved via an ester‐functionalized PEDOT derivative [PEDOT(EHE)] that is soluble in a range of solvents with excellent film‐forming ability. PEDOT(EHE) demonstrates moderate electrical conductivities of 20–60 S cm−1 and hopping‐like (i.e., thermally activated) transport when doped with ferric tosylate (FeTos3). Upon basic hydrolysis of PEDOT(EHE) films, the electrically insulative side chains are cleaved and washed from the polymer film, leaving a densified film of PEDOT(OH). These films, when optimally doped, reach electrical conductivities of ≈1200 S cm−1 and demonstrate metal‐like (i.e., thermally deactivated and band‐like) transport properties and high stability at comparable doping levels.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 30, 2022
- Source ID
- 10.1002/anie.202211600
Entities
People
- Abigail A. Advincula
- Amalie Atassi
- Gregory M Su
- Guillaume Freychet
- James F Ponder
- John R Reynolds
- Joshua M. Rinehart
- Shannon K Yee
- Shawn Alan Gregory
Organizations
- Air Force Research Laboratory
- Brookhaven National Laboratory
- Georgia Tech
- Lawrence Berkeley National Laboratory
- Office of Naval Research