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Journal article
Aggregation-induced emission organic metal halide complex for X-ray scintillation
Materials horizons, Vol.11(13), pp.3076-3081
07/01/2024
PMID: 38639053
Web of Science ID: WOS:001205089900001
Abstract
The expanding applications of X-ray scintillation across various areas, from healthcare to security detection call for the development of new-generation scintillators that offer enhanced sensitivity, efficiency, and versatility. Here, we report for the first time the use of organic metal halide complexes with aggregation-induced emission (AIE) for X-ray scintillation, which can be facilely synthesized and processed in the solution phase. By reacting an AIE organic molecule, 4-(4-(diphenylamino) phenyl)-1-(propyl)-pyridinium (TPA-PD) with zinc chloride (ZnCl2) in solution at room temperature, an organic metal halide complex, (TPA-PD)(2)ZnCl2, is produced with a high synthetic yield of 87%. Optical and radioluminescence characterizations find that (TPA-PD)(2)ZnCl2 exhibits bluish-green photoluminescence and radioluminescence peaked at around 450 nm, with a photoluminescence quantum efficiency (PLQE) of 65%, and an absolute light yield of 13423 Photon per MeV. Moreover, short photoluminescence and radioluminescence decay lifetimes are recorded at 1.81 ns and 5.24 ns, respectively. For X-ray scintillation, an excellent response dose-response linearity and a low limit of detection of 80.23 nGy(air) S-1 are obtained for (TPA-PD)(2)ZnCl2. By taking advantage of the high X-ray absorption of metal halides and fast radioluminescence of AIE molecules, our design of covalently bonded organic metal halide complexes opens up new opportunities for the development of high-performance solution-processable scintillators.
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- Title
- Aggregation-induced emission organic metal halide complex for X-ray scintillation
- Publication Details
- Materials horizons, Vol.11(13), pp.3076-3081
- Resource Type
- Journal article
- Publisher
- Royal Society of Chemistry
- Number of pages
- 6
- Identifiers
- WOS:001205089900001; 99381443121006600
- Academic Unit
- Chemistry; Hal Marcus College of Science and Engineering
- Language
- English