Citation: Jiajia Li, Liying Wang, Qianqian Liu, Shuang Yu, Hong-Ying Zang, Zhong-Min Su. Ln³⁺/Bi³⁺-induced the assembly of molybdenum-oxygen clusters with proton conductivity[J]. Chinese Chemical Letters, ;2026, 37(10): 111532. doi: 10.1016/j.cclet.2025.111532 shu

Ln³⁺/Bi³⁺-induced the assembly of molybdenum-oxygen clusters with proton conductivity

Jiajia Li ^{a, 1} ,
Liying Wang ^{b, 1} ,
Qianqian Liu ^b ,
Shuang Yu ^b ,
Hong-Ying Zang ^{b, *,} ,
Zhong-Min Su ^{a, c, *,}

a.
School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
b.
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Changchun 130024, China
c.
Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, China

zanghy100@nenu.edu.cn

zmsu@nenu.edu.cn

Received Date: 28 May 2025
Revised Date: 28 June 2025
Accepted Date: 2 July 2025
Available Online: 3 July 2025

Figures(4)

The most notable structural features of polyoxometalates (POMs) are their large molecular size and relatively low effective surface charge density. These properties endow POMs with excellent Brønsted acidity and proton mobility, making them ideal materials for proton conductors. In this study, a series of homotrimeric complexes were successfully synthesized through Ln³⁺/Bi³⁺ induced assembly of a suitable organic ligand 1-hydroxyethylidene 1,1-diphosphonic acid (HEDP): H₉[La(Mo₂O₄)₆(H₂O)₆(HEDP)₆](LaO₉H₆)·18H₂O (complex 1), H₉[Nd(Mo₂O₄)₆(H₂O)₆(HEDP)₆](NdO₆H₁₂)·15H₂O (complex 2), and H₉[Bi(Mo₂O₄)₆(H₂O)₆(HEDP)₆] (complex 3). Notably, the presence of free rare earth ions in the asymmetric unit of complexes 1 and 2 is a structural feature that results in a tighter hydrogen-bonding network in their three-dimensional stacking structures, which in turn significantly enhances the proton conductivity. Complexes 1–3 exhibit excellent proton conductivity, with measured values of 3.35 × 10^–², 3.81 × 10^–², and 2.37 × 10^–² S/cm under 98% relative humidity at 80 ℃. This study establishes a promising strategy for designing molybdate cluster-based materials with enhanced proton conduction properties.
- Polyoxometalates,
- Rare earth,
- Molybdenum cluster,
- Hydrogen bond,
- Proton conduction
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沈阳化工大学材料科学与工程学院沈阳 110142

Ln3+/Bi3+-induced the assembly of molybdenum-oxygen clusters with proton conductivity

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通讯作者: 陈斌, bchen63@163.com

Ln³⁺/Bi³⁺-induced the assembly of molybdenum-oxygen clusters with proton conductivity