Superprotonic conductivity of a uio-66 framework functionalized with sulfonic acid groups by facile postsynthetic oxidation

Won Ju Phang; Hyuna Jo; Woo Ram Lee; Jeong Hwa Song; Kicheon Yoo; Bongsoo Kim; Chang Seop Hong

doi:10.1002/anie.201411703

Superprotonic conductivity of a uio-66 framework functionalized with sulfonic acid groups by facile postsynthetic oxidation

Won Ju Phang, Hyuna Jo, Woo Ram Lee, Jeong Hwa Song, Kicheon Yoo, Bongsoo Kim, Chang Seop Hong

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

340 Citations (Scopus)

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. Decorated for honorable conductivity: The postsynthetic oxidation of a thiol-laced UiO-66-type framework generated sulfonic acid groups covalently linked to the backbone of the system (see picture; green circles are Zrpound;O nodes). The oxidized material exhibited stable superprotonic conductivity of 8.4×10^-2 S cm^-1 at 80 °C and 90 % relative humidity.

Original language	English
Pages (from-to)	5142-5146
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	54
Issue number	17
DOIs	https://doi.org/10.1002/anie.201411703
Publication status	Published - 2015 Apr 20

Keywords

metal-organic frameworks
postsynthetic oxidation
proton-conducting materials
sulfonic acid groups
thiol groups

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1002/anie.201411703

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title = "Superprotonic conductivity of a uio-66 framework functionalized with sulfonic acid groups by facile postsynthetic oxidation",

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. Decorated for honorable conductivity: The postsynthetic oxidation of a thiol-laced UiO-66-type framework generated sulfonic acid groups covalently linked to the backbone of the system (see picture; green circles are Zrpound;O nodes). The oxidized material exhibited stable superprotonic conductivity of 8.4×10-2 S cm-1 at 80 °C and 90 % relative humidity.",

keywords = "metal-organic frameworks, postsynthetic oxidation, proton-conducting materials, sulfonic acid groups, thiol groups",

author = "Phang, {Won Ju} and Hyuna Jo and Lee, {Woo Ram} and Song, {Jeong Hwa} and Kicheon Yoo and Bongsoo Kim and Hong, {Chang Seop}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

month = apr,

day = "20",

doi = "10.1002/anie.201411703",

language = "English",

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T1 - Superprotonic conductivity of a uio-66 framework functionalized with sulfonic acid groups by facile postsynthetic oxidation

AU - Phang, Won Ju

AU - Jo, Hyuna

AU - Lee, Woo Ram

AU - Song, Jeong Hwa

AU - Yoo, Kicheon

AU - Kim, Bongsoo

AU - Hong, Chang Seop

PY - 2015/4/20

Y1 - 2015/4/20

N2 - 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. Decorated for honorable conductivity: The postsynthetic oxidation of a thiol-laced UiO-66-type framework generated sulfonic acid groups covalently linked to the backbone of the system (see picture; green circles are Zrpound;O nodes). The oxidized material exhibited stable superprotonic conductivity of 8.4×10-2 S cm-1 at 80 °C and 90 % relative humidity.

AB - 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. Decorated for honorable conductivity: The postsynthetic oxidation of a thiol-laced UiO-66-type framework generated sulfonic acid groups covalently linked to the backbone of the system (see picture; green circles are Zrpound;O nodes). The oxidized material exhibited stable superprotonic conductivity of 8.4×10-2 S cm-1 at 80 °C and 90 % relative humidity.

KW - metal-organic frameworks

KW - postsynthetic oxidation

KW - proton-conducting materials

KW - sulfonic acid groups

KW - thiol groups

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Superprotonic conductivity of a uio-66 framework functionalized with sulfonic acid groups by facile postsynthetic oxidation

Abstract

Keywords

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