Fluorinated Benzyltriphenylphosphonium Manganese-Halide Scintillators for High-Performance Underwater X-ray Imaging.

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-09-29 DOI:10.1021/acs.inorgchem.5c03900

Xin Fang,Shichuan Chen,Zhenjie Huang,Shan-Ci Chen,Mei-Jin Lin

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引用次数: 0

Abstract

Manganese(II)-based organic-inorganic metal halides have emerged as promising candidates for the next generation of high-performance scintillators due to their environmental friendliness. However, their practical application is hindered by poor stability, especially in humid or aqueous environments. In this study, we designed a series of fluorinated benzyltriphenylphosphonium salts by varying the number and position of fluorine atoms on the benzyl group. Using these salts as organic cations, four manganese(II) organic-inorganic metal halides─(BzTPP)2MnBr4, (FBzTPP)2MnBr4, (3,4-2FTPP)2MnBr4, and (3,4,5-3FTPP)2MnBr4─were synthesized. Among them, (FBzTPP)2MnBr4 exhibited the highest photoluminescence quantum yield (PLQY = 99.74%) and photon yield (63,000 photons MeV-1), with a detection limit as low as 83.6 nGy s-1. When combined with PVDF to form flexible films for X-ray imaging, a spatial resolution of 7.15 lp mm-1 was achieved. Notably, fluorine substitution significantly improved the water stability of both crystals and films, enabling clear underwater X-ray imaging. This study demonstrates an effective approach to enhancing the stability and performance of Mn-based scintillators through tailored organic cation design.

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用于高性能水下x射线成像的氟化苯三苯磷卤化锰闪烁体。

锰（II）基有机-无机金属卤化物因其环境友好性而成为下一代高性能闪烁体的有希望的候选者。然而，它们的实际应用受到稳定性差的阻碍，特别是在潮湿或含水环境中。在本研究中，我们通过改变苄基上氟原子的数目和位置，设计了一系列氟化苄基三苯膦盐。以这些盐为有机阳离子，合成了四种锰（II）有机无机金属卤化物──（BzTPP）2MnBr4、（FBzTPP）2MnBr4、（3,4- 2ftpp）2MnBr4和（3,4,5- 3ftpp）2MnBr4──。其中，（FBzTPP）2MnBr4具有最高的光致发光量子产率（PLQY = 99.74%）和光子产率（63,000个光子MeV-1），检测限低至83.6 nGy s-1。当与PVDF结合形成用于x射线成像的柔性薄膜时，实现了7.15 lp mm-1的空间分辨率。值得注意的是，氟取代显著提高了晶体和薄膜的水稳定性，实现了清晰的水下x射线成像。本研究展示了一种通过量身定制的有机阳离子设计来提高锰基闪烁体稳定性和性能的有效方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.