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Superprotonic Conductivity of a UiO-66 Framework Functionalized with Sulfonic Acid Groups by Facile Postsynthetic Oxidation
- Authors
- Phang, Won Ju; Jo, Hyuna; Lee, Woo Ram; Song, Jeong Hwa; Yoo, Kicheon; Kim, BongSoo; Hong, Chang Seop
- Issue Date
- 20-4월-2015
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- metal-organic frameworks; postsynthetic oxidation; proton-conducting materials; sulfonic acid groups; thiol groups
- Citation
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.54, no.17, pp.5142 - 5146
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
- Volume
- 54
- Number
- 17
- Start Page
- 5142
- End Page
- 5146
- ISSN
- 1433-7851
- 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 x 10(-2) S cm(-1) at 80 degrees 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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