Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging

Kai Feng; Zong-Ji Ye; Wei-Guang Wang; Jia-Ni Huang; Xin Yan; Heng-Yu Cao; Zhi-Sheng Gao; Shu-Man Zhang; Si-Ming Chen; Huan-Huan Li; Ye Tao

doi:10.1007/s10118-026-3784-5

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Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging

RESEARCH ARTICLE | Updated：2026-08-19

- Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-8(2026)
- Affiliations：
  
  a.State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
  b.State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
- Author bio：
  
  iamhhli@njupt.edu.cn (H.H.L.)
  iamytao@njupt.edu.cn (Y.T)
- Funds：
- DOI：10.1007/s10118-026-3784-5
  CLC：
- Received：20 May 2026，
  
  Accepted：14 June 2026，
  
  Online First：19 August 2026，
  
  Published：2026-07
- Accepted：
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Feng, K.; Ye, Z. J.; Wang, W. G.; Huang, J. N.; Yan, X.; Cao, H. Y.; Gao, Z. S.; Zhang, S. M.; Chen, S. M.; Li, H. H.; Tao, Y. Host-guest multiple resonance thermally activated delayed fluorescent copolymer scintillators for X-ray imaging. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3784-5

Kai Feng, Zong-Ji Ye, Wei-Guang Wang, et al. Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging[J/OL]. Chinese Journal of Polymer Science, 2026, 441-8.
Feng, K.; Ye, Z. J.; Wang, W. G.; Huang, J. N.; Yan, X.; Cao, H. Y.; Gao, Z. S.; Zhang, S. M.; Chen, S. M.; Li, H. H.; Tao, Y. Host-guest multiple resonance thermally activated delayed fluorescent copolymer scintillators for X-ray imaging. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3784-5 DOI：

Kai Feng, Zong-Ji Ye, Wei-Guang Wang, et al. Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging[J/OL]. Chinese Journal of Polymer Science, 2026, 441-8. DOI： 10.1007/s10118-026-3784-5.

摘要

Abstract

Polymer-based scintillating materials hold considerable promise for a broad range of applications. However

their development has been constrained primarily by the intrinsically low exciton harvesting efficiency. Herein

we harness a host-guest energy transfer strategy to overcome this limitation. Through a simple radical polymerization

thermally activated delayed fluorescence units bearing a C＝O/N resonance structure are embedded into a pyridine-containing copolymer framework. Using pyridine groups with high triplet energies as the host matrix effectively suppresses aggregation-caused quenching and maintains efficient reverse intersystem crossing process of luminescent thermally activated delayed fluorescence unit for high exciton harvesting. The resulting material exhibits intense photoluminescence and radioluminescence emission at 492 nm. Line-pair and modulation transfer function analyses further validate that the scintillator delivers a spatial resolution of 13.3 lp/mm and a detection limit of 390 nGy/s. X-ray imaging experiments demonstrate that the material can clearly resolve complex internal structures of diverse specimens

confirming its potential for industrial non-destructive testing. This work presents a flexible

high-resolution organic scintillator and paves the way for its deployment in multi-scenario X-ray imaging.

关键词

Keywords

references

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