Quantifying internal charge transfer and mixed ion-electron transfer in conjugated radical polymers.

Chemical Science
Shaoyang WangJodie L Lutkenhaus

Abstract

Macromolecular radicals are receiving growing interest as functional materials in energy storage devices and in electronics. With the need for enhanced conductivity, researchers have turned to macromolecular radicals bearing conjugated backbones, but results thus far have yielded conjugated radical polymers that are inferior in comparison to their non-conjugated partners. The emerging explanation is that the radical unit and the conjugated backbone (both being redox active) transfer electrons between each other, essentially "quenching" conductivity or capacity. Here, the internal charge transfer process is quantified using a polythiophene loaded with 0, 25, or 100% nitroxide radicals (2,2,6,6-tetramethyl-1-piperidinyloxy [TEMPO]). Importantly, deconvolution of the cyclic voltammograms shows mixed faradaic and non-faradaic contributions that contribute to the internal charge transfer process. Further, mixed ion-electron transfer is determined for the 100% TEMPO-loaded conjugated radical polymer, from which it is estimated that one triflate anion and one propylene carbone molecule are exchanged for every electron. Although these findings indicate the reason behind their poor conductivity and capacity, they point to how these mate...Continue Reading

References

Oct 10, 2008·Journal of the American Chemical Society·Kenichi OyaizuHiroyuki Nishide
Sep 6, 2011·Journal of the American Chemical Society·M SathiyaA K Shukla
May 15, 2013·Physical Chemistry Chemical Physics : PCCP·Ju-Won JeonJodie L Lutkenhaus
Feb 16, 2016·ACS Macro Letters·Nerea CasadoMichel Armand
Aug 2, 2016·Chemical Reviews·Simon MuenchUlrich S Schubert
Jun 24, 2017·Angewandte Chemie·Fei LiJodie L Lutkenhaus
Dec 26, 2017·Journal of the American Chemical Society·Kan SatoKenichi Oyaizu
Feb 13, 2018·Journal of Materials Chemistry. C, Materials for Optical and Electronic Devices·Yiren ZhangChristopher K Ober
Nov 28, 2018·Nature Materials·Shaoyang WangJodie L Lutkenhaus
Jan 29, 2019·ACS Applied Materials & Interfaces·Yuan XieZhongfan Jia
Aug 21, 2019·Nature Materials·Bryan D PaulsenJonathan Rivnay
Jan 18, 2020·ChemSusChem·Jodie LutkenhausGregory D Fuchs
Apr 17, 2020·Nature Materials·Simone FratiniHenning Sirringhaus

❮ Previous
Next ❯

Methods Mentioned

BETA
quartz crystal microbalance
electron paramagnetic resonance

Software Mentioned

EQCM

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.