Citation: Yanjie Lv, Xinyu Zhao, Jing Sun, Huiying Sun, Wenxi Zhang, Yuhan Cui, Xiao Li, Zhongmin Su. Atomic-level regulation of POMOF homologous isomer for photocatalytic C-H bond oxidation[J]. Chinese Chemical Letters, ;2026, 37(10): 113018. doi: 10.1016/j.cclet.2026.113018 shu

Atomic-level regulation of POMOF homologous isomer for photocatalytic C-H bond oxidation

Yanjie Lv ^a ,
Xinyu Zhao ^c ,
Jing Sun ^{a, *,} ,
Huiying Sun ^a ,
Wenxi Zhang ^a ,
Yuhan Cui ^a ,
Xiao Li ^{a, *,} ,
Zhongmin Su ^{a, b, *,}

a.
School of Chemical and Environmental Engineering, Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry, Changchun University of Science and Technology, Changchun 130022, China
b.
State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130021, China
c.
Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China

sj-cust@126.com

lix@cust.edu.cn

zmsu@nenu.edu.cn

Received Date: 30 March 2026
Revised Date: 18 May 2026
Accepted Date: 28 May 2026
Available Online: 29 May 2026

Figures(4)

How to break through the oxidation energy barrier of C(sp³)-H bonds with high dissociation energy and prevent excessive oxidation is a significant challenge. This study presents the atomic-level regulation of POMOF dimensions by inducing structural differentiation through hydroxide end-capping. Two homologous isomers, named as Co-W₁₀ and OH-Co-W₁₀ respectively, have formed three-dimensional (3D) and two-dimensional (2D) structures through varied metal coordination modes. The 2D structure of OH-Co-W₁₀ demonstrates excellent electron delocalization and transfer channels over the 3D structure of Co-W₁₀. OH-Co-W₁₀ exhibits enhanced oxygen activation capacity compared to Co-W₁₀. In the catalytic oxidation of toluene, OH-Co-W₁₀ achieves an impressive conversion rate of 98.1%, and the selectivity of benzaldehyde is as high as 97.3% (6720.2 µmol/g), which is cleaner and more efficient than that of the latest photocatalysts and Co-W₁₀ (4713.1 µmol/g). In this study, the hydroxide capping strategy is proposed for generation of homologous isomers, offering a new direction for catalytic oxidation of C(sp³)-H bonds by expounding differences in active sites through distinct structural features.
- Hydroxide capping,
- Structural designation,
- Decatungstate,
- Photocatalysis,
- C(sp³)-H oxidation
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