Efficient Organic D‐π‐A Scintillators for Temperature‐Adaptive X‐Ray Imaging DOI
Jing Sun,

Meijuan Ding,

Huili Ma

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

Abstract Achieving highly efficient organic scintillators for X‐ray imaging remains a significant challenge, primarily owing to the inherent difficulty in facilitating rapid radiative decays of both singlet and triplet excitons. To address this limitation, novel design strategy is introduced that incorporated fluorine atoms modify π‐bridge D‐π‐A molecules, thereby fine‐tuning their electronic structures photophysical properties. The emitters, namely 1FAT 2FAT, show excellent thermally activated delayed fluorescence (TADF), aggregation‐induced (AIDF), room temperature phosphorescence (RTP) excited by ultraviolet light varying with surrounding environments. Notably, doped PMMA film exhibites intense emission across broad range from 77 363 K, showcasing its adaptability diverse thermal conditions. More importantly, 1FAT@PMMA exhibits radioluminescence performance under excitation low detection limit 62.27 nGy s −1 high spatial resolution over 20 lp mm . This study introduces fundamental developing efficient, temperature‐adaptive scintillators, significantly expanding potential applications flexible, stretchable detectors advanced technologies.

Language: Английский

Efficient Organic D‐π‐A Scintillators for Temperature‐Adaptive X‐Ray Imaging DOI
Jing Sun,

Meijuan Ding,

Huili Ma

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

Abstract Achieving highly efficient organic scintillators for X‐ray imaging remains a significant challenge, primarily owing to the inherent difficulty in facilitating rapid radiative decays of both singlet and triplet excitons. To address this limitation, novel design strategy is introduced that incorporated fluorine atoms modify π‐bridge D‐π‐A molecules, thereby fine‐tuning their electronic structures photophysical properties. The emitters, namely 1FAT 2FAT, show excellent thermally activated delayed fluorescence (TADF), aggregation‐induced (AIDF), room temperature phosphorescence (RTP) excited by ultraviolet light varying with surrounding environments. Notably, doped PMMA film exhibites intense emission across broad range from 77 363 K, showcasing its adaptability diverse thermal conditions. More importantly, 1FAT@PMMA exhibits radioluminescence performance under excitation low detection limit 62.27 nGy s −1 high spatial resolution over 20 lp mm . This study introduces fundamental developing efficient, temperature‐adaptive scintillators, significantly expanding potential applications flexible, stretchable detectors advanced technologies.

Language: Английский

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