Proton-conductive metal-organic frameworks

Teppei Yamada, Masaaki Sadakiyo, Akihito Shigematsu, Hiroshi Kitagawa

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

Proton-conductive electrolytes are key materials in fuel cells. We introduced acidic functional groups into a porous coordination polymer (PCP), or metalorganic framework (MOF), and constructed proton-conductive PCP/MOFs. To achieve this, a novel synthetic method for introducing acidic groups in PCP/MOF was invented. The proton conductivities of various PCP/MOF materials were investigated by AC impedance spectroscopy, and some of the materials showed high proton conductivity up to 8 × 10-3 S cm-1 at ambient temperature. We also investigated the dependency of proton conductivity on functional groups and found a relationship between proton conductivity, the acidity of the functional groups, and the hydrogen-bond networks formed inside the pores of PCP/MOFs. These PCP/MOF materials have high crystallinity, and the frameworks and arrangement of guests in the inner pore were clearly determined by X-ray crystallographic analysis. The relationship between proton conductivity and hydrogen-bond networks was investigated. This study thus establishes a novel field for investigating highly proton-conductive materials.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalBulletin of the Chemical Society of Japan
Volume89
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

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Proton conductivity
Metallorganic polymers
Protons
Metals
Functional groups
Polymers
Hydrogen bonds
Conductive materials
Acidity
Electrolytes
Fuel cells
Spectroscopy
X rays
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Proton-conductive metal-organic frameworks. / Yamada, Teppei; Sadakiyo, Masaaki; Shigematsu, Akihito; Kitagawa, Hiroshi.

In: Bulletin of the Chemical Society of Japan, Vol. 89, No. 1, 01.01.2016, p. 1-10.

Research output: Contribution to journalArticle

Yamada, Teppei ; Sadakiyo, Masaaki ; Shigematsu, Akihito ; Kitagawa, Hiroshi. / Proton-conductive metal-organic frameworks. In: Bulletin of the Chemical Society of Japan. 2016 ; Vol. 89, No. 1. pp. 1-10.
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