Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit

Yu-Yue Gao; Kai-Yuan Zhang; Shu-Meng Wang; Hui Tong; Jun Liu

doi:10.1007/s10118-024-3123-7

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Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit

RESEARCH ARTICLE | Updated：2024-08-06

- Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit
- Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit
- 高分子科学（英文版） 2024年42卷第8期页码：1029-1037
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  liujun@ciac.ac.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 22135007 and 52073281).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-024-3123-7.
- DOI：10.1007/s10118-024-3123-7
  中图分类号：
- 收稿：2024-01-28，
  
  修回：2024-03-09，
  
  录用：2024-03-11，
  
  网络首发：2024-04-25，
  
  纸质出版：2024-08-01
- Accepted：
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Gao, Y. Y.; Zhang, K. Y.; Wang, S. M.; Tong, H.; Liu, J. Highly red emissive conjugated homopolymers based on double B←N bridged bipyridine unit. Chinese J. Polym. Sci. 2024, 42, 1029–1037

Yu-Yue Gao, Kai-Yuan Zhang, Shu-Meng Wang, et al. Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit[J]. Chinese Journal of Polymer Science, 2024, 42(8): 1029-1037.
Gao, Y. Y.; Zhang, K. Y.; Wang, S. M.; Tong, H.; Liu, J. Highly red emissive conjugated homopolymers based on double B←N bridged bipyridine unit. Chinese J. Polym. Sci. 2024, 42, 1029–1037 DOI： 10.1007/s10118-024-3123-7.

Yu-Yue Gao, Kai-Yuan Zhang, Shu-Meng Wang, et al. Highly Red Emissive Conjugated Homopolymers Based on Double B←N Bridged Bipyridine Unit[J]. Chinese Journal of Polymer Science, 2024, 42(8): 1029-1037. DOI： 10.1007/s10118-024-3123-7.

摘要

In this manuscript

a series of new organoboron conjugated homopolymers based on double B←N bridged bipyridine (BNBP) unit are designed and synthesized. All these polymers exhibit deep-red emission (

max

650 nm) with high fluorescence efficiency (

ca. 0.6) in solution. The polymers can be used as the emitters in solution processed OLEDs with decent device performance.

Abstract

Conjugated homopolymers based on six-member rings

e.g.

polyfluorene

always exhibit blue emission and conjugated homopolymers based on five-member rings

e.g.

polythiophene

can give red emission with low efficiency. In this work

we report a series of new conjugated homopolymers based on six-member r

ings with high-efficiency deep-red emission. The repeating units of the red light emitting homopolymers are double B←N bridged bipyridine (BNBP) with the boron atoms functionalized with diphenyl

borafluorene

and 2

7-di-

tert

-butyl-borafluorene groups

respectively. The relationship between the chemical structures and the opto-electronic properties of the monomers and the homopolymers has been systematically studied. The three polymers emit pure red light (

max

=656 nm) or deep red light (

max

=693 nm) with fluorescence quantum efficiency in solution higher than 60%. The polymers can be used as the emitters in solution-processed organic light-emitting diodes with red emission and decent device performance. This work indicates a new strategy to design highly efficient light emitting conjugated polymers.

关键词

Keywords

references

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