Unprecedented Radiation Resistant Thorium-Binaphthol Metal-Organic Framework

Journal of the American Chemical Society
Sara E GilsonPeter C Burns

Abstract

A thorium-organic framework (TOF-16) containing hexameric secondary building units connected by functionalized binaphthol linkers was synthesized, characterized, and irradiated to probe its radiation resistance. Radiation stability was examined using γ-rays and 5 MeV He2+ ions to simulate α particles. γ-irradiation of TOF-16 to an unprecedented 4 MGy dose resulted in no apparent bulk structural damage visible by X-ray diffraction. To further probe radiation stability, we conducted the first He2+ ion irradiation study of a metal-organic framework (MOF). Diffraction data indicate onset of crystallinity loss upon approximately 15 MGy of irradiation and total loss of crystallinity upon exposure to approximately 25 MGy of He2+ ion irradiation. The high radiation resistance observed suggests MOFs can withstand radiation exposure at doses found in nuclear waste streams and highlights the need for a systematic approach to understand and eventually design frameworks with exceptional radiation resistance.

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Citations

Sep 23, 2020·Chemistry : a European Journal·Jian LinJian-Qiang Wang
Jun 17, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiang-Jing Gao, He-Gen Zheng
Jun 25, 2021·Chemical Science·Corey R MartinNatalia B Shustova
Jul 22, 2021·Chemical Communications : Chem Comm·Zhaofa ZhengJian-Qiang Wang
Jan 7, 2021·ACS Applied Materials & Interfaces·Huangjie LuJian-Qiang Wang
Oct 16, 2021·Journal of the American Chemical Society·Sara E GilsonPeter C Burns

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