Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport

Yu-Ze Wang; Xiao-Yan Zhang; Ze-Zhou Liang; You-Bing Mu; Zhi-Yuan Zhao; Jie-Yu Wang; Jian Pei; Yun-Qi Liu; Xiao-Bo Wan

doi:10.1007/s10118-026-3709-3

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Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport

RESEARCH ARTICLE | Updated：2026-08-31

- Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport
- Chinese Journal of Polymer Science Vol. 44, Issue 9, Pages: 2972-2981(2026)
- Affiliations：
  
  a.Key Laboratory of Flexible Optoelectronic Materials and Technology, Ministry of Education, School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, China
  b.Beijing National Laboratory for Molecular Sciences, the Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  c.Institute of Chemistry Chinese Academy of Sciences, Beijing 100080, China
- Author bio：
  
  muyb@jhun.edu.cn (Y.B.M.)
  zhaozhiyuan@iccas.ac.cn (Z.Y.Z.)
  wanxb@jhun.edu.cn (X.B.W.)
- Funds：
- DOI：10.1007/s10118-026-3709-3
  CLC： [M
- Received：29 December 2025，
  
  Revised：2026-03-23，
  
  Accepted：14 April 2026，
  
  Online First：20 July 2026，
  
  Published：05 September 2026
- Accepted：
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Wang, Y. Z.; Zhang, X. Y.; Liang, Z. Z.; Mu, Y. B.; Zhao, Z. Y.; Wang, J. Y.; Pei, J.; Liu, Y. Q.; Wan, X. B. Pyrimidoisoindigo-based polymers for ambipolar charge transport. Chinese J. Polym. Sci. 2026, 44, 2972–2981

Yu-Ze Wang, Xiao-Yan Zhang, Ze-Zhou Liang, et al. Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2972-2981.
Wang, Y. Z.; Zhang, X. Y.; Liang, Z. Z.; Mu, Y. B.; Zhao, Z. Y.; Wang, J. Y.; Pei, J.; Liu, Y. Q.; Wan, X. B. Pyrimidoisoindigo-based polymers for ambipolar charge transport. Chinese J. Polym. Sci. 2026, 44, 2972–2981 DOI： 10.1007/s10118-026-3709-3.

Yu-Ze Wang, Xiao-Yan Zhang, Ze-Zhou Liang, et al. Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2972-2981. DOI： 10.1007/s10118-026-3709-3.

摘要

Two new polymers based on thiophene-flanked pyrimidoisoindigo (T-PymII) were synthesized by copolymerizing it with thiophene and 3

4-difluorothiophene; both polymers exhibited ambipolar transport properties: P(PymII-TTT) was dominated by hole transport

while P(PymII-T-2FT-T) was dominated by electron transport.

Abstract

Two pyrimidoisoindigo-based polymers were synthesized by copolymerizing thiophene-flanked pyrimidoisoindigo (T-PymII) with thiophene (T) or 3

4-difluorothiophene (2FT)

and their structure–property correlations were investigated. Although both polymers exhibited ambipolar transport properties

P(PymII-TTT) was dominated by hole transport

while P(PymII-T-2FT-T) was dominated by electron transport. Among them

the highest hole mobility up to 1.66×10

−2

·V

−1

·s

−1

was observed for P(PymII-TTT)

while the highest electron mobility of 6.37×10

−3

·V

−1

·s

−1

was observed for P(PymII-T-2FT-T). AFM and GIWAXS analyses revealed that their poor morphology and crystallinity may account for their inferior performance. Therefore

further side-chain engineering is needed t

o improve the crystallinity of PymII-based polymers.

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references

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