Synthesis of Thieno[3,4-<italic style="font-style: italic">b</italic>]pyrazine-based Alternating Conjugated Polymers <italic style="font-style: italic">via</italic> Direct Arylation for Near-infrared OLED Applications

Ze-Wang He; Qiang Zhang; Chen-Xi Li; Hong-Ting Han; Yan Lu

doi:10.1007/s10118-022-2661-0

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Synthesis of Thieno[3,4-b]pyrazine-based Alternating Conjugated Polymers via Direct Arylation for Near-infrared OLED Applications

Papers | Updated：2022-01-01

- Synthesis of Thieno[3,4-b]pyrazine-based Alternating Conjugated Polymers via Direct Arylation for Near-infrared OLED Applications
- Chinese Journal of Polymer Science Vol. 40, Issue 2, Pages: 138-146(2022)
- Affiliations：
  
  a.School of Materials Science & Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials & Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
  b.College of Chemistry, Nankai University, Tianjin 300071, China
- Author bio：
  
  luyan@tjut.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 21604063 and 52173010), and the Program for Prominent Young College Teachers of Tianjin Educational Committee.
- DOI：10.1007/s10118-022-2661-0
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Ze-Wang He, Qiang Zhang, Chen-Xi Li, et al. Synthesis of Thieno[3,4-b]pyrazine-based Alternating Conjugated Polymers via Direct Arylation for Near-infrared OLED Applications. [J]. Chinese Journal of Polymer Science 40(2):138-146(2022)
DOI：

Ze-Wang He, Qiang Zhang, Chen-Xi Li, et al. Synthesis of Thieno[3,4-b]pyrazine-based Alternating Conjugated Polymers via Direct Arylation for Near-infrared OLED Applications. [J]. Chinese Journal of Polymer Science 40(2):138-146(2022) DOI： 10.1007/s10118-022-2661-0.

摘要

Abstract

Three alternating conjugated polymers, namely PFTP, PCzTP, and PSiTP, which combine a thieno[3,4-,b,]pyrazine (TP) unit with different benzene-based donor units such as 9,9-dioctylfluorene, 9-heptadecyl-9,H,-carbazole and 5,5-dioctyl-5,H,-dibenzo[,b,d,]silole, were synthesized in good yield (,>,85%) and high molecular weight up to,M,n,=5.82×10,4,via, direct arylation polymerization (DArP). All the resultant polymers exhibit moderate bandgap of about 1.80 eV and strong deep red/near-infrared emitting in the solid state. Among them, the PSiTP-based electroluminescence (EL) devices with an architecture of ITO/PEDOT:PSS/PTAA/emitting layer/TPBi/LiF/Al give the best performance with a maximum luminance of 2543 cd/m,2, at 478 mA/cm,2,. This work expands the application scope of high-performance conjugated polymers which can be synthesized by DArP.

关键词

Keywords

Thieno[34-b]pyrazine Alternating D-A structureDirect arylation polymerizationConjugated polymerOrganic light-emitting diodes

references

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Synthesis of Thieno[3,4-b]pyrazine-based Alternating Conjugated Polymers via Direct Arylation for Near-infrared OLED Applications

DOI：10.1007/s10118-022-2661-0

摘要

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