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Hydrophilic Conjuga...
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Filate, Tadele Tamenu,1994Addis Ababa University,Chalmers tekniska högskola,Chalmers University of Technology,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden; Department of Chemistry, Addis Ababa University, PO Box 33658, Addis Ababa, Ethiopia
(author)
Hydrophilic Conjugated Polymers for Sustainable Fabrication of Deep-Red Light-Emitting Electrochemical Cells
- Article/chapterEnglish2024
Publisher, publication year, extent ...
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John Wiley & Sons,2024
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LIBRIS-ID:oai:research.chalmers.se:77a3243f-e554-4a6c-a4ce-2e57cfc962e0
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https://research.chalmers.se/publication/538812URI
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https://doi.org/10.1002/admt.202301696DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-218034URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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It is crucial to develop functional electronic materials that can be processed from green solvents to achieve environmentally sustainable and cost-efficient printing fabrication of organic electronic devices. Here, the design and cost-efficient synthesis of two hydrophilic and emissive conjugated polymers, TQ-OEG and TQ2F-OEG, are presented, which are rendered hydrophilic through the grafting of oligo(ethylene glycol) (OEG) solubilizing groups onto the thiophene-quinoxaline conjugated backbone and thereby can be processed from a water:ethanol solvent mixture. It is shown that the introduction of the OEG groups enables for a direct dissolution of salts by the neat polymer for the attainment of solid-state ion mobility. These properties are utilized for the design and development of light-emitting electrochemical cells (LECs), the active materials of which can be solution cast from a water:ethanol-based ink. It is specifically shown that such an LEC device, comprising an optimized blend of the TQ2F-OEG emitter and a Li salt as the active material positioned between two air-stabile electrodes, delivers deep-red emission (peak wavelength = 670 nm) with a radiance of 185 µW m−2 at a low drive voltage of 2.3 V. This study contributes relevant information as to how polymers and LEC devices can be designed and fabricated to combine functionality with sustainability.
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Tang, ShiUmeå universitet,Institutionen för fysik,Umeå University(Swepub:umu)shta0002
(author)
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Wolkeba, Zewdneh Genene,1983Chalmers tekniska högskola,Chalmers University of Technology,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden(Swepub:cth)zewdneh
(author)
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Edman, Ludvig,1967-Umeå universitet,Institutionen för fysik,Umeå University(Swepub:umu)lued0001
(author)
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Mammo, W.Addis Ababa University,Department of Chemistry, Addis Ababa University, PO Box 33658, Addis Ababa, Ethiopia
(author)
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Wang, Ergang,1981Chalmers tekniska högskola,Chalmers University of Technology,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden(Swepub:cth)ergang
(author)
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Addis Ababa UniversityChalmers tekniska högskola
(creator_code:org_t)
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In:Advanced Materials Technologies: John Wiley & Sons9:32365-709X
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