Solution-Processable Hole-Transporting Polymers: Synthesis, Doping Study and Crosslinking Induced by UV-Irradiation or Huisgen-Click Cycloaddition
Caldera-Cruz E, Zhang K, Tsuda T, Tkachov R, Beryozkina T, Kiriy N, Voit B, Kiriy A (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 9
Article Number: 2101379
Journal Issue: 7
Abstract
A pair of hole-conducting polymers comprising 3,6-linked carbazole and meta-linked anisole derivatives having solubilizing moieties to enable their solution processability, and complementarily reactive side-groups (azide and alkyne) for cross-linking, are synthesized and characterized. The polymers can be cross-linked either by thermal annealing at relatively low temperatures in the 85–110 °C range, or by UV irradiation. A general applicability of the latter for a photolithographic patterning of the hole conducting polymer is proven. The polymers have an ionization potential (IP) of 5.8 eV, close to the IP of a small molecule hole-conductor tris(4-carbazoyl-9-ylphenyl)amine (TCTA). In combination with a strong dopant hexacyano-trimethylene-cyclopropane (CN6CP), but not with commercial 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), the polymers can be efficiently p-doped to increase their conductivity by 5–6 orders of magnitude, as measured in devices with a lateral setup. Taken together, these characteristics suggest that the synthesized polymers are promising candidates for their use in solution-processable organic light-emitting diodes as hole-injection layer and hole-transporting layer materials, which will be verified in the upcoming work.
Involved external institutions
Leibniz-Institut für Polymerforschung Dresden e. V.
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
Ural Federal University B.N. Yeltsin
Russian Federation (RU)
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
Ural Federal University B.N. Yeltsin
Russian Federation (RU)
How to cite
APA:
Caldera-Cruz, E., Zhang, K., Tsuda, T., Tkachov, R., Beryozkina, T., Kiriy, N.,... Kiriy, A. (2022). Solution-Processable Hole-Transporting Polymers: Synthesis, Doping Study and Crosslinking Induced by UV-Irradiation or Huisgen-Click Cycloaddition. Advanced Materials Interfaces, 9(7). https://dx.doi.org/10.1002/admi.202101379
MLA:
Caldera-Cruz, Enrique, et al. "Solution-Processable Hole-Transporting Polymers: Synthesis, Doping Study and Crosslinking Induced by UV-Irradiation or Huisgen-Click Cycloaddition." Advanced Materials Interfaces 9.7 (2022).
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