Proton conductivity control by ion substitution in a highly proton-conductive metal - Organic framework

Masaaki Sadakiyo; Teppei Yamada; Hiroshi Kitagawa

doi:10.1021/ja507634v

Proton conductivity control by ion substitution in a highly proton-conductive metal - Organic framework

Masaaki Sadakiyo, Teppei Yamada, Hiroshi Kitagawa

Applied Chemistry

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

131 Citations (Scopus)

Abstract

Proton conductivity through two-dimensional (2-D) hydrogen-bonding networks within a layered metal - organic framework (MOF) (NH₄)₂ (H₂adp)-[Zn₂(ox)₃]·3H₂O (H₂adp = adipic acid; ox = oxalate) has been successfully controlled by cation substitution. We synthesized a cation-substituted MOF, K₂ (H₂adp)-[Zn₂(ox)₃]·3H₂O, where the ammonium ions in a well-defined hydrogen-bonding network are substituted with non-hydrogen-bonding potassium ions, without any apparent change in the crystal structure. We successfully controlled the proton conductivity by cleavage of the hydrogen bonds in a proton-conducting pathway, showing that the 2-D hydrogen-bonding networks in the MOF truly contribute to the high proton conductivity. This is the first example of the control of proton conductivity by ion substitution in a well-defined hydrogen-bonding network within a MOF.

Original language	English
Pages (from-to)	13166-13169
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	136
Issue number	38
DOIs	https://doi.org/10.1021/ja507634v
Publication status	Published - Sep 24 2014

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja507634v

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title = "Proton conductivity control by ion substitution in a highly proton-conductive metal - Organic framework",

abstract = "Proton conductivity through two-dimensional (2-D) hydrogen-bonding networks within a layered metal - organic framework (MOF) (NH4)2 (H2adp)-[Zn2(ox)3]·3H2O (H2adp = adipic acid; ox = oxalate) has been successfully controlled by cation substitution. We synthesized a cation-substituted MOF, K2 (H2adp)-[Zn2(ox)3]·3H2O, where the ammonium ions in a well-defined hydrogen-bonding network are substituted with non-hydrogen-bonding potassium ions, without any apparent change in the crystal structure. We successfully controlled the proton conductivity by cleavage of the hydrogen bonds in a proton-conducting pathway, showing that the 2-D hydrogen-bonding networks in the MOF truly contribute to the high proton conductivity. This is the first example of the control of proton conductivity by ion substitution in a well-defined hydrogen-bonding network within a MOF.",

author = "Masaaki Sadakiyo and Teppei Yamada and Hiroshi Kitagawa",

year = "2014",

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T1 - Proton conductivity control by ion substitution in a highly proton-conductive metal - Organic framework

AU - Sadakiyo, Masaaki

AU - Yamada, Teppei

AU - Kitagawa, Hiroshi

PY - 2014/9/24

Y1 - 2014/9/24

N2 - Proton conductivity through two-dimensional (2-D) hydrogen-bonding networks within a layered metal - organic framework (MOF) (NH4)2 (H2adp)-[Zn2(ox)3]·3H2O (H2adp = adipic acid; ox = oxalate) has been successfully controlled by cation substitution. We synthesized a cation-substituted MOF, K2 (H2adp)-[Zn2(ox)3]·3H2O, where the ammonium ions in a well-defined hydrogen-bonding network are substituted with non-hydrogen-bonding potassium ions, without any apparent change in the crystal structure. We successfully controlled the proton conductivity by cleavage of the hydrogen bonds in a proton-conducting pathway, showing that the 2-D hydrogen-bonding networks in the MOF truly contribute to the high proton conductivity. This is the first example of the control of proton conductivity by ion substitution in a well-defined hydrogen-bonding network within a MOF.

AB - Proton conductivity through two-dimensional (2-D) hydrogen-bonding networks within a layered metal - organic framework (MOF) (NH4)2 (H2adp)-[Zn2(ox)3]·3H2O (H2adp = adipic acid; ox = oxalate) has been successfully controlled by cation substitution. We synthesized a cation-substituted MOF, K2 (H2adp)-[Zn2(ox)3]·3H2O, where the ammonium ions in a well-defined hydrogen-bonding network are substituted with non-hydrogen-bonding potassium ions, without any apparent change in the crystal structure. We successfully controlled the proton conductivity by cleavage of the hydrogen bonds in a proton-conducting pathway, showing that the 2-D hydrogen-bonding networks in the MOF truly contribute to the high proton conductivity. This is the first example of the control of proton conductivity by ion substitution in a well-defined hydrogen-bonding network within a MOF.

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