A europium-based metal-organic framework as a high-performance X-ray scintillator

Area of Science:

• Materials Science
• Inorganic Chemistry
• Radiochemistry

Background:

• Metal-organic frameworks (MOFs) offer tunable properties for diverse applications.
• Efficient X-ray scintillators are crucial for medical imaging and security.
• Europium-based materials are known for their luminescent properties.

Purpose of the Study:

• To develop a novel europium-based metal-organic framework (Eu-ndc) for X-ray scintillation.
• To evaluate the performance of Eu-ndc as an X-ray scintillator.
• To explore its potential for high-resolution X-ray imaging.

Main Methods:

• Synthesis of a europium-based metal-organic framework (Eu-ndc) using trinuclear Eu3+ clusters and 2,6-naphthalenedicarboxylate linkers.
• Characterization of the material's structural and luminescent properties.
• Testing its performance as an X-ray scintillator, including detection limit and light yield measurements.

Main Results:

• The synthesized Eu-ndc exhibited intense red radioluminescence.
• An ultralow X-ray detection limit of 4.6 μGy s⁻¹ was achieved.
• A high light yield of 16,546 photons per MeV was recorded.
• Flexible scintillation films were fabricated using the Eu-ndc material.

Conclusions:

• Eu-ndc is an efficient X-ray scintillator with superior sensitivity and luminescence.
• The material's properties make it suitable for developing flexible scintillation films.
• Eu-ndc holds promise for advancing high-resolution X-ray imaging technologies.