Meta-linked Phenoselenazine-based Conjugated Polymers for Efficient Room-temperature Phosphorescence

Shan-Hui Gao; Zhi-Qiang Cheng; Xiao-Fu Wu; Hui Tong; Li-Xiang Wang

doi:10.1007/s10118-025-3517-1

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Meta-linked Phenoselenazine-based Conjugated Polymers for Efficient Room-temperature Phosphorescence

RESEARCH ARTICLE | Updated：2026-03-26

- Meta-linked Phenoselenazine-based Conjugated Polymers for Efficient Room-temperature Phosphorescence
- Chinese Journal of Polymer Science Vol. 44, Issue 4, Pages: 980-987(2026)
- Affiliations：
  
  a.State Key Laboratory of Polymer Science and Technology, 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：
  
  chemtonghui@ciac.ac.cn (H.T.)
  lixiang@ciac.ac.cn (L.X.W.)
- Funds：
- DOI：10.1007/s10118-025-3517-1
  CLC：
- Received：30 October 2025，
  
  Revised：2025-11-26，
  
  Accepted：28 November 2025，
  
  Online First：23 January 2026，
  
  Published：05 April 2026
- Accepted：
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Gao, S. H.; Cheng, Z. Q.; Wu, X. F.; Tong, H.; Wang, L. X. Meta-linked phenoselenazine-based conjugated polymers for efficient room-temperature phosphorescence. Chinese J. Polym. Sci. 2026, 44, 980–987

Shan-Hui Gao, Zhi-Qiang Cheng, Xiao-Fu Wu, et al. Meta-linked Phenoselenazine-based Conjugated Polymers for Efficient Room-temperature Phosphorescence[J]. Chinese Journal of Polymer Science, 2026, 44(4): 980-987.
Gao, S. H.; Cheng, Z. Q.; Wu, X. F.; Tong, H.; Wang, L. X. Meta-linked phenoselenazine-based conjugated polymers for efficient room-temperature phosphorescence. Chinese J. Polym. Sci. 2026, 44, 980–987 DOI： 10.1007/s10118-025-3517-1.

Shan-Hui Gao, Zhi-Qiang Cheng, Xiao-Fu Wu, et al. Meta-linked Phenoselenazine-based Conjugated Polymers for Efficient Room-temperature Phosphorescence[J]. Chinese Journal of Polymer Science, 2026, 44(4): 980-987. DOI： 10.1007/s10118-025-3517-1.

摘要

By employing meta-linking strategy to enhance the contribution of the Se atom to the highest occupied molecular orbital (HOMO) and to improve spin-orbit coupling

phenoselenazine-based conjugated polymers achieve bright room-temperature phosphorescence with phosphorescence quantum yields up to 21.4% in film states.

Abstract

Pure organic room-temperature phosphorescent (RTP) polymers possess good processability and flexibility over small molecular crystals. However

most of RTP polymers reported so far are based on non-conjugated polymers

and achieving efficient phosphorescent emission in RTP conjugated polymers (CPs) remains a significant challenge. Herein

we developed two RTP CPs (P(PSeZPh-

-Ph) and P(P

SeZPh-

-Ph)) by linking the phenoselenazine units with the para- and meta-phenylene units

respectively

to form the conjugated main chains. The phenylene linker with different lingking mode manipulates the effictive

-conjugation of the polymer backbones. Comparing with the para-linked P(PSeZPh-

-Ph)

meta-linked P(PSeZPh-

-Ph) exhibit the decreased effective

-conjugation and the enhanced contribution of selenium atoms to the frontier orbitals

leading to the larger spin-orbit coupling (SOC) constants and the accelerated phosphorescence radiative decay process. The P(PSeZPh-

-Ph) achieves a phosphorescence quantum yield of 21.4% in doped polystyrene films

which is among the highest efficiencies reported to date for pure organic RTP CPs. These CPs are applied to construct phosphorescent film sensors for oxygen detection with the high quenching constants (

) up to 14.80 kPa

–1

and low detection of limit of 0.84 ppm

demostrating the potential for application in oxygen film sensors.

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