Improving X-ray Scintillating Merits of Zero-Dimensional Organic-Manganese(II) Halide Hybrids via Enhancing the Ligand Polarizability for High-Resolution Imaging

Luminescent metal halides have been exploited as a new class of X-ray scintillators for security checks, nondestructive inspection, and medical imaging. However, the charge traps and hydrolysis vulnerability are always detrimental to the three-dimensional ionic structural scintillators. Here, the two zero-dimensional organic-manganese(II) halide coordination complexes 1-Cl and 2-Br were synthesized for improvements in X-ray scintillation. The introduction of a polarized phosphine oxide can help to increase the stabilities, especially the self-absorption-free merits of these Mnbased hybrids. The X-ray dosage rate detection limits reached up to 3.90 and 0.81 mu Gyair/s for 1-Cl and 2-Br, respectively, superior to the medical diagnostic standard of 5.50 mu Gyair/s. The fabricated scintillation films were applied to radioactive imaging with high spatial resolutions of 8.0 and 10.0 lp/mm, respectively, holding promise for use in diagnostic X-ray medical imaging.

Automated summary

Two zero-dimensional organic-manganese(II) halide coordination complexes, 1-Cl and 2-Br, were synthesized to improve X-ray scintillation. The introduction of a polarized phosphine oxide increased the stabilities, particularly the self-absorption-free merits, of these Mn-based hybrids. The X-ray dosage rate detection limits for 1-Cl and 2-Br reached 3.90 and 0.81 mu Gyair/s, respectively, surpassing the medical diagnostic standard of 5.50 mu Gyair/s. The fabricated scintillation films demonstrated high spatial resolutions of 8.0 and 10.0 lp/mm, respectively, making them promising for use in diagnostic X-ray medical imaging.