uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Post-Deposition Polymerization: A Method for Circumventing Processing of Insoluble Conducting Polymers
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.ORCID iD: 0000-0002-0036-9911
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.ORCID iD: 0000-0002-4726-4121
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-5496-9664
Show others and affiliations
(English)Manuscript (preprint) (Other (popular science, discussion, etc.))
Abstract [en]

A method, termed post-deposition polymerization, for the synthesis of conducting polymers is presented, which enables solid state polymerization of oligomeric layers by oxidative polymerization. The method was developed as a general tool for the preparation of conducting polymer layers that allows for industrially viable solution-processing methods to be used for substrate coating. We use trimer building blocks based on 3,4-ethylenedioxythiophene (EDOT) in the processing step, and show that the resulting trimer layer has innate conductivity when oxidized, which presumably is instrumental for successful polymerization of the solid layer. As judged by in situ conductance measurement during oxidative polymerization of the trimer layer, the layer-conductivity is greatly increased as a result of polymerization. Successful solid state polymerization was also confirmed by the irreversible spectral changes, monitored in-situ during polymerization, resulting in signature spectral transitions of conducting polymers from an initial spectrum derived solely from trimer absorption. From the in situ determined mass changes we estimate the swelling during post-deposition polymerization as well as the average polymer length. Electrochemical characterization of the resulting polymer show fast redox conversion as well as non-activated electron transport through the material indicating that the post-deposition polymerization-generated polymer indeed show promising properties. We believe that the post-deposition polymerization method will enable investigations, currently hampered by limited processability, of interesting families of conducting polymer materials.

Keywords [en]
Conducting Polymer, PEDOT, polymerization
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-383028OAI: oai:DiVA.org:uu-383028DiVA, id: diva2:1314518
Available from: 2019-05-09 Created: 2019-05-09 Last updated: 2019-05-16
In thesis
1. Electrochemical Characterizations of Conducting Redox Polymers: Electron Transport in PEDOT/Quinone Systems
Open this publication in new window or tab >>Electrochemical Characterizations of Conducting Redox Polymers: Electron Transport in PEDOT/Quinone Systems
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Organic electrode materials for rechargeable batteries have caught increasing attention since they can be used in new innovative applications such as flexible electronics and smart fabrics. They can provide safer and more environmentally friendly devices than traditional batteries made from metals. Conducting polymers constitute an interesting class of organic electrode materials that have been thoroughly studied for battery applications. They have high conductivity but are heavy relative to their energy storage ability and will hence form batteries with low weight capacity. Quinones, on the other hand, are low weight molecules that participate in electron transport in both animals and plants. They could provide batteries with high capacity but are easily dissolved in the electrolyte and have low conductivity. These two constituents can be combined into a conducting redox polymer that has both high conductivity and high capacity. In the present work, the conducting polymer PEDOT and the simplest quinone, benzoquinone, are covalently attached and form the conducting redox polymer used for most studies in this thesis. The charge transport mechanism is investigated by in situ conductivity measurements and is found to mainly be governed by band transport. Other properties such as packing, kinetics, mass changes, and spectral changes are also studied. A polymerization technique is also analyzed, that allows for polymerization from a deposited layer. Lastly, two different types of batteries using conducting redox polymers are constructed. The thesis gives insight into the fundamental properties of conducting redox polymers and paves the way for the future of organic electronics.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2019. p. 59
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1819
Keywords
Conducting Redox Polymer, PEDOT, Quinone, Charge transport, Conductivity, Organic Battery
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-383026 (URN)978-91-513-0674-2 (ISBN)
Public defence
2019-08-30, Häggsalen, 10132, Ångström, Lägerhyddsvägen 1, Uppsala, 09:15 (English)
Opponent
Supervisors
Available from: 2019-06-10 Created: 2019-05-09 Last updated: 2019-08-23

Open Access in DiVA

No full text in DiVA

Authority records BETA

Sterby, MiaStrietzel, ChristianEmanuelsson, RikardStrömme, MariaSjödin, Martin

Search in DiVA

By author/editor
Sterby, MiaStrietzel, ChristianEmanuelsson, RikardStrömme, MariaSjödin, Martin
By organisation
Nanotechnology and Functional MaterialsSolid State Physics
Nano Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 102 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf