Metal–organic frameworks as optically stimulated luminescence dosimeter

• Published in: Journal of radioanalytical and nuclear chemistry 2024-11, Vol.333 (11), p.5949-5956
• Main Authors: Joshi, Shailesh, Panda, Madhusmita, Annalakshmi, O., Srinivas, C. Venkata, Venkatraman, B.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Dosimeters; Fading; Hadrons; Heavy Ions; Inorganic Chemistry; Ionizing radiation; Luminescence; Metal-organic frameworks; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Radiation dosage
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-024-09761-7

Metal–organic frameworks (MOF) have been vigorously investigated as hybrid materials in recent decades due to their exceptional structural versatility and applications in diverse fields. The development of novel MOFs for radiation detection and luminescence-based dosimetry is the latest topic of interest. In this contribution, we have synthesized and characterized a Uranyl MOF, which shows an optically stimulated luminescence (OSL) phenomenon induced by ionizing radiation. OSL dosimetric studies were carried out on Uranyl MOF, which revealed that MOF has a linear dose–response up to 100 Gy with a 1.1 Gy minimum detection dose. It also shows good reusability, around 30% fading in one day, very low fading beyond one day to 30 days, and decent radiation stability (stable up to 10 kGy). Preliminary dosimetry results are promising and show that Uranyl MOF can be utilized in the field of low-dose radiation processing applications in the future.