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Covalent hybrid materials between polyoxometalates and organic molecules for enhanced electrochemical properties

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Abstract

The organic functionalization of polyoxometalate (POM) clusters has exhibited increasing superiority for the rational excavation and design of advanced POM-based materials. The architectures of such inorganic–organic hybrids are just like “molecular Lego” toys by virtue of the intermolecular and/or intramolecular interactions. Although numerous novel hybrids have been reported by pioneers, the relationship between organic segments and supramolecular architectures is still ambiguous. In this paper, we focus on the influence from organic bridging ligand to the structural orientation of POM hybrid materials by X-ray diffraction, molecular simulation, and energy calculation. The results indicate that rigid organic bridging ligand possesses a much stronger tendency to form intermolecular interactions than flexible ligand and can improve the electrochemical performance for hydrogen evolution reaction.

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Acknowledgements

We appreciate the kind help from Juanjuan Han, Institute of Chemistry, Chinese Academy of Sciences, for the characterizations of HR-ESI–MS. This work is supported by National Natural Science Foundation of China (No. 21271068, 21401050), the Natural Science Foundation of Hubei Province (No. 2015CFA131), and Wuhan Applied Basic Research Program (No. 2014010101010020).

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  1. Bo Huang and Degang Ke contributed equally to this work.

Authors and Affiliations

  1. Institute of POM-Based Materials, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, China

    Bo Huang, Degang Ke, Zhelun Xiong, Yu Wang, Kanghong Hu, Zicheng Xiao & Pingfan Wu

  2. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, China

    Bo Huang, Peng Jiang & Minghui Liang

  3. University of Chinese Academy of Sciences, Beijing, China

    Bo Huang

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Contributions

B. Huang, P. Wu, Z. Xiao, M. Liang, and P. Jiang provided the idea of this work. B. Huang, D. Ke conducted the experiments. B. Huang, D. Ke, Z. Xiao, and P. Wu conducted and analysed the single-crystal X-ray diffraction data, molecular simulation, and energy calculation. B. Huang, D. Ke, Z. Xiong, Y. Wang, K. Hu, M. Liang, P. Jiang conducted and analysed the spectroscopic characterizations. Electrochemical tests were conducted by B. Huang, M. Liang, and P. Jiang. All authors have contributed themselves to the organization of the manuscript. B. Huang and D. Ke contributed equally to this work.

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Correspondence to Peng Jiang, Minghui Liang, Zicheng Xiao or Pingfan Wu.

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Huang, B., Ke, D., Xiong, Z. et al. Covalent hybrid materials between polyoxometalates and organic molecules for enhanced electrochemical properties. J Mater Sci 55, 5554–5570 (2020). https://doi.org/10.1007/s10853-020-04404-0

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