Superprotonic Conductivity of a UiO‐66 Framework Functionalized with Sulfonic Acid Groups by Facile Postsynthetic Oxidation |
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| Authors: | Dr. Won Ju Phang Hyuna Jo Woo Ram Lee Jeong Hwa Song Kicheon Yoo Dr. BongSoo Kim Prof. Chang Seop Hong |
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| Affiliation: | 1. Department of Chemistry, Korea University, Seoul 136‐713 (Korea);2. Photo‐electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 136‐791 (Korea) |
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| Abstract: | Facile postsynthetic oxidation of the thiol‐laced UiO‐66‐type framework UiO‐66(SH)2 enabled the generation of UiO‐66(SO3H)2 with sulfonic acid groups covalently linked to the backbone of the system. The oxidized material exhibited a superprotonic conductivity of 8.4×10?2 S cm?1 at 80 °C and 90 % relative humidity, and long‐term stability of the conductivity was observed. This level of conductivity exceeds that of any proton‐conducting MOF reported to date and is equivalent to the conductivity of the most effective known electrolyte, Nafion. |
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| Keywords: | metal– organic frameworks postsynthetic oxidation proton‐conducting materials sulfonic acid groups thiol groups |
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