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Updated: Apr 11, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Proton conduction in Mo(VI)-based metallo-supramolecular polymers
Rakesh K Pandey1, Md Delwar Hossain, Chanchal Chakraborty
1Electronic Functional Materials Group, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan. HIGUCHI.masayoshi@nims.go.jp.
A novel molybdenum(VI)-based metallo-supramolecular polymer exhibits high proton conduction. The presence of hydroxyl (OH) groups within the polymer structure is essential for facilitating efficient proton transport.
Area of Science:
- Materials Science
- Polymer Chemistry
- Electrochemistry
Background:
- Proton-conductive materials are crucial for energy applications like fuel cells.
- Developing efficient and stable proton conductors remains a significant challenge.
- Metallo-supramolecular polymers offer tunable properties for advanced material design.
Purpose of the Study:
- To investigate the proton conduction properties of a Mo(VI)-based metallo-supramolecular polymer.
- To elucidate the role of specific functional groups in facilitating proton transport.
- To explore the potential of these polymers as proton-conductive materials.
Main Methods:
- Synthesis of a Mo(VI)-based metallo-supramolecular polymer incorporating carboxylic acids.
- Measurement of proton conductivity at high relative humidity (95% RH).
- Fourier-transform infrared (FTIR) spectroscopy to analyze functional groups and their integration.
Main Results:
- Achieved high proton conductivity of 8.5 × 10(-2) mS cm(-1) at 95% RH.
- FTIR analysis confirmed the integration of hydroxyl (OH) groups within the polymer matrix.
- Demonstrated a strong correlation between OH group presence and proton transport efficiency.
Conclusions:
- The Mo(VI)-based metallo-supramolecular polymer shows promising high proton conductivity.
- Hydroxyl groups are critical for enabling proton transport in this material.
- This research highlights the potential of metallo-supramolecular polymers for proton-conductive applications.
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