Two Types of Subgroup-Valence Heteroatoms (PIII, TeIV) Synergistically Controlling Octa-CeIII-Encapsulated Heteropolyoxotungstate and Its Electrochemical Recognition Properties.
Two Types of Subgroup-Valence Heteroatoms (PIII, TeIV) Synergistically Controlling Octa-CeIII-Encapsulated Heteropolyoxotungstate and Its Electrochemical Recognition Properties.
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DOI：
10.1021/acs.inorgchem.2c02677
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发表时间：
2022-10
影响因子：
4.6
通讯作者：
Juan Li;Nizi Song;Menglu Wang;Zhimin Zhang;Yanzhou Li;Lijuan Chen;Junwei Zhao
中科院分区：
文献类型：
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作者：
Juan Li;Nizi Song;Menglu Wang;Zhimin Zhang;Yanzhou Li;Lijuan Chen;Junwei Zhao
多金属氧酸盐 (POM) 合成化学的快速发展极大地推动了基于 POM 的结构可变创新材料的产生。在此，我们合成了一种新型的 PIII 和 TeIV 协同控制八-CeIII 封装的杂多钨酸盐 [H2N(CH3)2]11K2Na6H11[Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12(B-β-TeW8O30)2(B-α-TeW8O31)4]·64H2O (1)。其独特的阴离子骨架 [Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12(B-β-TeW8O30)2(B-α-TeW8O31)4]30- 由两个四空位 [B-β-TeW8O30]8- 和四个四空位 [B-α-TeW8O31]10- 部分通过 无机-有机杂化物[Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12]26+ {Ce8P2W8}簇核。有趣的是，{Ce8P2W8}由四个[W2O11]10-基团和两个[HPIIIO3]2-阴离子和八个Ce3+离子组装而成。此外，1还与羧化多壁碳纳米管（CMCN）复合，形成双组分1/CMCN纳米复合材料。通过在玻碳电极（GCE）上修饰1/CMCN，构建了电化学识别平台（命名为1/CMCN/GCE），用于在生理pH（pH = 7.0）下电化学检测多巴胺（DPA）。研究结果表明，1/CMCN/GCE 对 DPA 具有 4.95 nM 的良好检测限。这项工作为促进POM基材料的创新和合理结构设计以及将其应用扩展到电化学和生物检测领域提供了相当大的启发。
Rapid development of the synthetic chemistry of polyoxometalates (POMs) has greatly driven the generation of structurally variable innovative POM-based materials. Herein, we synthesized a novel PIII and TeIV synergistically controlling octa-CeIII-encapsulated heteropolyoxotungstate [H2N(CH3)2]11K2Na6H11[Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12(B-β-TeW8O30)2(B-α-TeW8O31)4]·64H2O (1). Its distinctive anion skeleton [Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12(B-β-TeW8O30)2(B-α-TeW8O31)4]30- is built by two tetra-vacancy [B-β-TeW8O30]8- and four tetra-vacancy [B-α-TeW8O31]10- moieties linked through an inorganic-organic hybrid [Ce8(CH3COO)2(HPIIIO3)2W8O20(H2O)12]26+ {Ce8P2W8} cluster core. Interestingly, {Ce8P2W8} is assembled from four [W2O11]10- groups and two [HPIIIO3]2- anions and eight Ce3+ ions. Besides, 1 was further composited with carboxylated multiwalled carbon nanotube (CMCN), resulting in a bi-component 1/CMCN nanocomposite. An electrochemical recognition platform (named as 1/CMCN/GCE) was built by modifying 1/CMCN on a glassy carbon electrode (GCE) for electrochemical detection of dopamine (DPA) at physiological pH (pH = 7.0). The findings have shown that 1/CMCN/GCE exhibits a good detection limit of 4.95 nM for DPA. This work provides considerable inspiration to promote innovative and rational structure designs of POM-based materials and expand their applications to electrochemical and biological detection fields.