DataVXAdvanced Optical MaterialsPaper
journal article·2026-01

Water‐Soluble Phosphonium Salts Enable Full‐Color Long‐Lived Phosphorescence in Polymer Matrix for Flexible Display and X‐Ray Imaging

Jiangang Li, Jing Zhang, Yuyang Ju, Zijian Zhou, Shujuan Liu, Yun Ma, Qiang Zhao

Advanced Optical Materials· Volume 14· Issue 2
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Source abstract

Abstract

Abstract The development of doped organic room‑temperature phosphorescent (RTP) polymers is hampered by the physicochemical incompatibility between hydrophilic hosts such as polyvinyl alcohol (PVA) and conventional hydrophobic phosphors. This mismatch triggers severe phase separation and lowers RTP performance. A molecular engineering strategy that addresses this challenge by introducing intrinsically water‑soluble phosphonium salt emitters is presented. The design combines a bromide counterion that enhances intersystem crossing with a bulky alkyl chain that suppresses aggregation‑induced quenching, while also guaranteeing seamless miscibility with PVA. This approach eliminates phase separation and yields highly efficient, full‑color RTP in doped films, with emissions tunable from 427 to 619 nm. The best performer shows an ultralong lifetime of 2.18 s and a quantum yield of 11.63%. Building on these properties, the versatility of the material in two key applications is demonstrated, namely high‑performance flexible displays and high‑resolution X‑ray imaging with a spatial resolution of 11.51 lp mm −1 .
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Research context

Polymers

OpenAlex topics: Luminescence and Fluorescent Materials · Organic Light-Emitting Diodes Research · Luminescence Properties of Advanced Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Flexible Electronics (LoFE) & Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology) Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing 210023 P. R. China

College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing 210023 P. R. China

School of Electronics and Information Technology Nanjing University of Information Science and Technology Nanjing 210044 P. R. China

Funding

Key Technologies Research and Development Program of Anhui Province · National Natural Science Foundation of China

References (39)

Show source-provided references
1. 10.1038/s41467-024-48836-710.1038/s41467-024-48836-7 ↗
2. 10.1002/adom.20240300310.1002/adom.202403003 ↗
3. 10.1002/adma.20250095310.1002/adma.202500953 ↗
4. 10.1002/flm2.2310.1002/flm2.23 ↗
5. 10.1038/s41467-025-59367-010.1038/s41467-025-59367-0 ↗
6. 10.1002/flm2.4310.1002/flm2.43 ↗
7. 10.1038/s41467-025-61714-010.1038/s41467-025-61714-0 ↗
8. 10.1002/agt2.7012410.1002/agt2.70124 ↗
9. 10.1002/adfm.20250281110.1002/adfm.202502811 ↗
10. 10.1038/s41467-019-11749-x10.1038/s41467-019-11749-x ↗
11. 10.1002/adfm.20231406910.1002/adfm.202314069 ↗
12. 10.1021/jacs.1c0811810.1021/jacs.1c08118 ↗
13. 10.1021/acs.accounts.8b0062010.1021/acs.accounts.8b00620 ↗
14. 10.1021/jacs.1c0521310.1021/jacs.1c05213 ↗
15. 10.1021/accountsmr.3c0009010.1021/accountsmr.3c00090 ↗
16. 10.1038/s41467-020-14792-110.1038/s41467-020-14792-1 ↗
17. 10.1038/s41467-023-35930-510.1038/s41467-023-35930-5 ↗
18. 10.1039/D3SC06271F10.1039/D3SC06271F ↗
19. 10.1021/jacs.4c1714210.1021/jacs.4c17142 ↗
20. 10.1021/acsami.4c1624910.1021/acsami.4c16249 ↗
21. 10.1002/adom.20250042810.1002/adom.202500428 ↗
22. 10.1002/adom.20240245210.1002/adom.202402452 ↗
23. 10.1002/lpor.20230070410.1002/lpor.202300704 ↗
24. 10.1002/smll.20240707910.1002/smll.202407079 ↗
25. 10.1021/jacs.4c0888910.1021/jacs.4c08889 ↗
26. 10.1002/smll.20230908110.1002/smll.202309081 ↗
27. 10.1039/D3TC03206J10.1039/D3TC03206J ↗
28. 10.1016/j.cej.2023.14678110.1016/j.cej.2023.146781 ↗
29. 10.1002/adom.20230181210.1002/adom.202301812 ↗
30. 10.1016/j.mtchem.2022.10129710.1016/j.mtchem.2022.101297 ↗
31. 10.1039/D1MH01829A10.1039/D1MH01829A ↗
32. 10.1016/j.matt.2019.08.01610.1016/j.matt.2019.08.016 ↗
33. 10.1002/adom.20190143710.1002/adom.201901437 ↗
34. 10.1039/D4CC03156C10.1039/D4CC03156C ↗
35. 10.1007/s40843-023-2651-610.1007/s40843-023-2651-6 ↗
36. 10.1039/D4SC00161C10.1039/D4SC00161C ↗
37. 10.1002/adfm.20211194110.1002/adfm.202111941 ↗
38. 10.1021/jacs.4c1287210.1021/jacs.4c12872 ↗
39. 10.1002/adma.20250705810.1002/adma.202507058 ↗