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Effect of Purification Solvent on Polymer Impurities and Device Performance AITranslate

Shunsuke Kodama; Junpei Kuwabara; Xin Jiang; Iori Fukushima; Takaki Kanbara;
Advanced Technology Research & Development Center (Shimodate), Hitachi Chemical Co., Ltd.; University of Tsukuba; University of Tsukuba;Advanced Technology Research & Development Center, Hitachi Chemical Co., Ltd.; University of Tsukuba
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Publisher: ACS
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Abstract AITranslate

Poly(arylamine)s were synthesized by polycondensation of 4-n-octylaniline with 4,4′-dibromobiphenyl using the Buchwald–Hartwig aryl amination. Both the NH and the Br end groups were properly modified upon addition of an end-capping reagent in an appropriate ratio. The synthesized polymers contained many impurities, such as Pd, Br, and Cl, which decrease organic light-emitting diode performance. An investigation to reduce the impurities in the polymer showed that the purification solvent plays the key role in reducing the concentration of impurities in the polymer; purification with a nonchlorinated solvent, anisole, provided a highly pure poly(arylamine) even with a simple purification procedure. Moreover, the highly purified polymer material improved carrier mobility in hole-only devices.

KeyWords AITranslate

poly(arylamine) Buchwald−Hartwig aryl amination impurity in polymer purification solvent hole injection material Show More
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Basic Information:

DOI：https://doi.org/10.1021/acsapm.9b00385

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Citation Information:

Poly(arylamine)s were synthesized by polycondensation of 4-n-octylaniline with 4,4′-dibromobiphenyl using the Buchwald–Hartwig aryl amination. Both the NH and the Br end groups were properly modified upon addition of an end-capping reagent in an appropriate ratio. The synthesized polymers contained many impurities, such as Pd, Br, and Cl, which decrease organic light-emitting diode performance. An investigation to reduce the impurities in the polymer showed that the purification solvent plays the key role in reducing the concentration of impurities in the polymer; purification with a nonchlorinated solvent, anisole, provided a highly pure poly(arylamine) even with a simple purification procedure. Moreover, the highly purified polymer material improved carrier mobility in hole-only devices.

quote

GB/T 7714-2015 [1] Shunsuke Kodama, Junpei Kuwabara, Xin Jiang, et al. ACS Applied Polymer Materials, 2019(1). DOI:10.1021/acsapm.9b00385.
MLA [1] Shunsuke Kodama, et al., ACS Applied Polymer Materials, no. 1, 2019, https://doi.org/10.1021/acsapm.9b00385.
APA [1] Shunsuke Kodama, Junpei Kuwabara, Xin Jiang, Iori Fukushima, & Takaki Kanbara. (2019). ACS Applied Polymer Materials(1). https://doi.org/10.1021/acsapm.9b00385
IEEE [1] Shunsuke Kodama, Junpei Kuwabara, Xin Jiang, Iori Fukushima, and Takaki Kanbara, ACS Applied Polymer Materials, no. 1, 2019, doi: 10.1021/acsapm.9b00385. keywords: {poly(arylamine);Buchwald−Hartwig aryl amination;impurity in polymer;purification solvent;hole injection material;Show More}