Recent advances in metal-organic frameworks for X-ray detection

Abstract

Metal-organic frameworks (MOFs) are a class of fascinating supramolecular crystalline materials that have been widely developed for catalysis, gas storage, illumination, drug delivery/cytoprotection, and so on. Recently, MOFs have been found to have potential applications in X-ray detection due to their high sensitivity, fast response time, high absorption coefficient, and radiation stability. In this review, we present an overview on the fundamental mechanism of using MOFs for X-ray scintillation. We further discuss the recent developments in X-ray detection based on indirect X-ray scintillation and direct X-ray conversion. Finally, we provide a summary and a perspective on the future of this promising research field.

Mechanochemical Synthesis of Cuprous Complexes for X-ray Scintillation and Imaging

“…Figure a also presents a schematic diagram illustrating the X-ray imaging process, where the sample is placed between the scintillator film and the X-ray source, and X-ray images of the samples are captured using a digital camera. , Measured using the slanted edge method with a 1 mm thick tungsten metal plate, the actual spatial resolution was determined to be 6.8 lp mm –1 at the modulation transfer function MTF = 0.2 (Figure S7). Furthermore, as depicted in Figure b, the X-ray exposure contrast image of a circuit board is distinctly visible. Furthermore, X-ray radiography can be applied to opaque capsules to obtain an X-ray image of its internal content, as evidenced by the clear X-ray image of the inner metallic spring in Figure c.…”

Designing scintillating coordination polymers using a dual-ligand synthetic approach

“…Here we note that reports of scintillating (or autoluminescent) compounds containing phen, terpy, and ndc have been reported. 6,35 The electronic origin of this phenomenon was not explored here, yet we note the blueprint for preparing these materials a priori is being developed.…”

A hollow NaBiF4:Tb nanoscintillator with ultra-weak afterglow for high-resolution X-ray imaging

“…[37][38][39][40] X-Ray imaging is achieved by converting penetrated X-rays with different energies into visible light through a scintillation layer, and then a camera is used for optical amplification and imaging. 41,42 As shown in Fig. 4c, the bio-tissues of a bullfrog with different angles were clearly observed in the XEOL image.…”