Search NASA⌕ Search
Home/Archive/DOE OSTI

DOE OSTI · 3028969

Oligoether-Functionalized PEDOT: Combining an EDOT Backbone with Polar Side Chains for Solution Processability and High Electrical Conductivity

Ponder, Jr., James F. [Georgia Institute of Technology, Atlanta, GA (United States); Air Force Institute of Technology, Wright-Patterson AFB, OH (United States)]·Rinehart, Joshua M. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000181112749)·Advincula, Abigail A. [Air Force Institute of Technology, Wright-Patterson AFB, OH (United States); Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000322107178)·Atassi, Amalie [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:000000033218680X)·Gregory, Shawn A. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000210270675)·Jones, Austin L. [Georgia Institute of Technology, Atlanta, GA (United States)]·Freychet, Guillaume [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II); Univ. of Grenoble Alpes, Grenoble (France); Commissariat a l'Energie Atomique (CEA), Grenoble (France). Laboratoire d'Électronique des Technologies de l'Information (Leti)] (ORCID:000000018406798X)·Su, Gregory M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000174958041)·Yee, Shannon K. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000211199938)·Reynolds, John R. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000274174869)
View original source ↗Read source document ↗Export metadata ↓

Abstract

Conjugated polymers functionalized with oligoether (OE)-based side chains are a key class of materials for various organic electronic applications, including transparent electrodes, thermoelectrics, electrochromic displays, and electrochemical transistors. Herein, we report a highly soluble OE-functionalized poly(3,4-ethylenedioxythiophene) (PEDOT) homopolymer, prepared by direct (hetero)arylation polymerization, which allows solution processing to yield films with comparable redox properties to oxidatively polymerized PEDOT. This polymer, PEDOT(OE3), when optimally oxidatively doped, reaches among the highest electrical conductivities of any OE-functionalized polymer and is comparable to more synthetically complex OE-functionalized polymers. X-ray scattering and spectroscopy were utilized to rationalize the transport properties resulting from varying the doping level. Comparison of PEDOT(OE3) to a series of OE-functionalized dioxythiophenes with varying amounts of 3,4-ethylenedioxythiophene units allows for a deeper understanding of structure–property relationships through charge-transport models. Ultimately, PEDOT(OE3) is shown to be a material with exceptional charge-transport properties and is promising for various applications.

Explore related subjects

36 MATERIALS SCIENCE

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Ponder, Jr., James F. [Georgia Institute of Technology, Atlanta, GA (United States); Air Force Institute of Technology, Wright-Patterson AFB, OH (United States)], Rinehart, Joshua M. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000181112749), Advincula, Abigail A. [Air Force Institute of Technology, Wright-Patterson AFB, OH (United States); Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000322107178), Atassi, Amalie [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:000000033218680X), Gregory, Shawn A. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000210270675), Jones, Austin L. [Georgia Institute of Technology, Atlanta, GA (United States)], Freychet, Guillaume [Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II); Univ. of Grenoble Alpes, Grenoble (France); Commissariat a l'Energie Atomique (CEA), Grenoble (France). Laboratoire d'Électronique des Technologies de l'Information (Leti)] (ORCID:000000018406798X), Su, Gregory M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000174958041), Yee, Shannon K. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000211199938), Reynolds, John R. [Georgia Institute of Technology, Atlanta, GA (United States)] (ORCID:0000000274174869). 2026-03-11. Oligoether-Functionalized PEDOT: Combining an EDOT Backbone with Polar Side Chains for Solution Processability and High Electrical Conductivity. https://doi.org/10.1021/acsmaterialslett.5c01567

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

DOE OSTI2026

Cyclic moisture reactivation of calcium sorbents for long duration thermochemical energy storage

The transition to a flexible and reliable energy infrastructure, using electro-thermal energy generation technologies such as geothermal, concentrated solar power, and nuclear, usually demands simultaneous advancement of thermal energy storage (TES) to support on-demand electricity generation and industrial applications while mitigating the inherent intermittency of renewable energy sources and power outages from direct energy generation. Among TES technologies, thermochemical energy storage (TCES) based on calcium looping emerges as a compelling high-power energy storage candidate due to its high reaction enthalpy, compatibility with elevated operating temperatures, and abundance of low-cost materials. However, the long-term durability of calcium-based sorbents for TCES is hindered by surface sintering and particle aggregation, leading to performance degradation over repeated thermal cycles. This study explores a moisture hydration-based strategy to regenerate a degraded calcium sorbent and mitigate performance degradation for long duration TCES. The addition of moisture transforms calcium oxide into calcium hydroxide and produces intercalation water layers, associated with a regenerated surface area and reduced calcium oxide crystallite size. Both these effects are beneficial in restoring the sorbents' reactivity for carbonization. Additionally, an optimized hydration-assisted reactivation protocol balances the recovered energy storage capacity with heating penalty required for moisture removal from hydrated samples, resulting in an enhanced energy storage capacity up to 176% compared to benchmark sorbents that undergo cycling without reactivation after 60 cycles. In conclusion, these results highlight the potential of hydration-assisted reactivation to enhance the long-term performance of TCES, providing an effective pathway to advancing electro-thermal storage technologies.

36 MATERIALS SCIENCE↗