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
- Host-Guest Multiple Resonance Thermally Activated Delayed Fluorescent Copolymer Scintillators for X-ray Imaging
- Chinese Journal of Polymer Science 2026年44卷页码：1-8
- 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：
  
  This study was financially supported in part by the National Natural Science Foundation of China (Nos. 22322106 and 62288102), the Basic Research Program of Jiangsu (No. BK20243057), the U35 Strong Foundation Program of Nanjing, and the Hua Li Talents Program of Nanjing University of Posts and Telecommunications.;The authors declare no interest conflict.Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3784-5.The data supporting the findings of this study are available from the corresponding author upon reasonable request.
- DOI：10.1007/s10118-026-3784-5
  中图分类号：
- 收稿：2026-05-20，
  
  录用：2026-06-14，
  
  网络首发：2026-08-19，
  
  纸质出版：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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