Influence of phenazine structure on polaron formation in polyaniline: in situ electron spin resonance-ultraviolet/visible-near-infrared spectroelectrochemical study

The Journal of Physical Chemistry. B
Evgenia DmitrievaLothar Dunsch

Abstract

The role of the phenazine structure in the stabilization of charged states in polyaniline was studied by in situ electron spin resonance (ESR)-UV/vis-near-infrared (NIR) spectroelectrochemistry of polyaniline and the copolymers of aniline and a phenazine derivative (3,7-diamino-5-phenylphenazinium chloride, phenosafranine). It is shown that the copolymer can be prepared by electropolymerization, and its structure was confirmed by mass spectrometry and IR spectroscopy. The electrochemistry of polyaniline and its copolymer pointed to preferred stabilization of a polaron pair in the charged states at the initial charge transfer reaction instead of polarons that are formed by equilibrium reaction at higher electrode potentials. A second polaron pair is detected for higher doped states of the polymer films. A mechanism of the formation of charged states in polyaniline and their equilibrium is given. It is shown that in situ ESR-UV/vis-NIR spectroelectrochemistry is the method of choice to differentiate between polarons and polaron pairs in their potential-dependent formation. Thus, by this in situ spectroelectrochemical method the influence of phenazine structure on the formation of polarons in aniline polymers and copolymers can be...Continue Reading

References

Mar 15, 1990·Physical Review. B, Condensed Matter·R P McCallA J Epstein
Sep 28, 1987·Physical Review Letters·S StafströmA G MacDiarmid
Feb 5, 1997·Chemical Reviews·Petr NovákOtto Haas
May 12, 2006·The Journal of Physical Chemistry. B·Miroslava TrchováGordana Cirić-Marjanović
Feb 13, 2007·The Journal of Physical Chemistry. B·Gordana Cirić-MarjanovićJaroslav Stejskal
Oct 9, 2007·The Journal of Physical Chemistry. B·Andreas PetrLothar Dunsch
Mar 18, 2008·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Gustavo M do NascimentoMarcia L A Temperini
Apr 15, 2008·Analytica Chimica Acta·Ulrich LangeVladimir M Mirsky

❮ Previous
Next ❯

Citations

Jan 1, 2014·ACS Applied Materials & Interfaces·Miroslava TrchováJaroslav Stejskal
Oct 13, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ines R MoraesLothar Dunsch
Aug 21, 2015·Physical Chemistry Chemical Physics : PCCP·Mika A TamskiMark E Newton
May 5, 2011·The Journal of Physical Chemistry. B·Evgenia Dmitrieva, Lothar Dunsch
Mar 19, 2021·Physical Chemistry Chemical Physics : PCCP·Veinardi SuendoAchmad Rochliadi
Aug 29, 2019·ACS Omega·Michal BláhaJaroslav Stejskal

❮ Previous
Next ❯

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.