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Superprotonic Conductivity of a UiO‐66 Framework Functionalized with Sulfonic Acid Groups by Facile Postsynthetic Oxidation
Author(s) -
Phang Won Ju,
Jo Hyuna,
Lee Woo Ram,
Song Jeong Hwa,
Yoo Kicheon,
Kim BongSoo,
Hong Chang Seop
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201411703
Subject(s) - conductivity , sulfonic acid , nafion , electrolyte , chemistry , covalent bond , relative humidity , inorganic chemistry , chemical engineering , polymer chemistry , organic chemistry , electrochemistry , electrode , engineering , physics , thermodynamics
Facile postsynthetic oxidation of the thiol‐laced UiO‐66‐type framework UiO‐66(SH) 2 enabled the generation of UiO‐66(SO 3 H) 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.