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

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

460 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

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

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

ASJC Scopus subject areas

Catalysis
General Chemistry

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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",

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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

Bibliographical note

Keywords

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