umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Oligomer Electrolytes for Light-Emitting Electrochemical Cells: Influence of the End Groups on Ion Coordination, Ion Binding, and Turn-on Kinetics
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.ORCID-id: 0000-0002-1903-9875
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.ORCID-id: 0000-0003-2495-7037
Visa övriga samt affilieringar
2019 (Engelska)Ingår i: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 11, nr 43, s. 40372-40381Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The electrolyte is an essential constituent of the light-emitting electrochemical cell (LEC), since its operating mechanism is dependent on the redistribution of mobile ions in the active layer. Recent developments of new ion transporters have yielded high-performance devices, but knowledge about the interactions between the ionic species and the ion transporters and the influence of these interactions on the LEC performance is lacking. We therefore present a combined computational and experimental effort that demonstrates that the selection of the end group in a star-branched oligomeric ion transporter based on trimethylolpropane ethoxylate has a paramount influence on the ionic interactions in the electrolyte and thereby also on the performance of the corresponding LECs. With hydroxyl end groups, the the salt is strongly coordinated to the ion transporter, which leads to suppression of ion pairing, but the penalty is a hindered ion release and a slow turn-on for the LEC devices. With methoxy end groups, an intermediate coordination strength is seen together with the formation of contact ion pairs, but the LEC performance is very good with fast turn-on. Using a series of ion transporters with alkyl carbonate end groups, the ion transporter:cation coordination strength is lowered further, but the turn-on kinetics are slower than what is seen for devices comprising the methoxy end-capped ion transporter.

Ort, förlag, år, upplaga, sidor
American Chemical Society (ACS), 2019. Vol. 11, nr 43, s. 40372-40381
Nyckelord [en]
light-emitting electrochemical cells, polymer electrolytes, coordination, binding energy, ion pairing
Nationell ämneskategori
Polymerkemi
Identifikatorer
URN: urn:nbn:se:umu:diva-165349DOI: 10.1021/acsami.9b15233ISI: 000493869700099PubMedID: 31621280OAI: oai:DiVA.org:umu-165349DiVA, id: diva2:1373006
Forskningsfinansiär
Stiftelsen Lars Hiertas MinneeSSENCE - An eScience CollaborationStiftelsen för strategisk forskning (SSF)VetenskapsrådetEnergimyndighetenTillgänglig från: 2019-11-26 Skapad: 2019-11-26 Senast uppdaterad: 2019-11-26Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextPubMed

Personposter BETA

Lindh, E. MattiasEdman, Ludvig

Sök vidare i DiVA

Av författaren/redaktören
Lindh, E. MattiasThordarson, PallEdman, LudvigMindemark, Jonas
Av organisationen
Institutionen för fysik
I samma tidskrift
ACS Applied Materials and Interfaces
Polymerkemi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetricpoäng

doi
pubmed
urn-nbn
Totalt: 43 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf