Nicotinate-Modified Lanthanide-Substituted Selenotungstate and Its Catalase-like Activity for the Detection of H<sub>2</sub>O<sub>2</sub> and Ascorbic Acid

A rigid nicotinate-modified lanthanide-substituted selenotungstate [H<sub>2</sub>N(CH<sub>3</sub>)<sub>2</sub>]<sub>6</sub>Na<sub>3</sub>H[La<sub>4</sub>SeW<sub>8</sub>(H<sub>2</sub>O)<sub>16</sub>(nica)<sub>2</sub>O<sub>28</sub>][SeW<sub>9</sub>O<sub>33</sub>]<sub>2</sub>·32H<sub>2</sub>O (<b>1</b>, Hnica = nicotinic acid) was synthesized and consists of two trivacant Keggin [B-α-SeW<sub>9</sub>O<sub>33</sub>]<sup>8-</sup> fragments and one unusual [SeW<sub>4</sub>O<sub>18</sub>]<sup>8-</sup> fragment bridged by a heterometallic [La<sub>4</sub>W<sub>4</sub>(H<sub>2</sub>O)<sub>16</sub>(nica)<sub>2</sub>O<sub>28</sub>]<sup>18-</sup> cluster. In the heterometallic cluster, two carboxyl O atoms in two nicotinate ligands directly coordinate with two W atoms in a stable C-O-W-O-W-O six-membered ring fashion. According to its catalase-like activity, <b>1</b> was utilized to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) by H<sub>2</sub>O<sub>2</sub> to produce blue oxidized TMB (ox-TMB), which can be used to establish a colorimetric sensing method for the detection of ascorbic acid. This work not only provides a promising platform for detecting H<sub>2</sub>O<sub>2</sub> and ascorbic acid but also expands the application potential of polyoxometalate-based materials in biological and clinical analyses.

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Publication Details

Journal
Inorganic Chemistry
Published
2024-10-18
DOI
https://doi.org/10.1021/acs.inorgchem.4c03165
Citations
5
Primary Topic
Advanced Nanomaterials in Catalysis
Type
article
Field-Weighted Citation Impact
0.59

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article

Nicotinate-Modified Lanthanide-Substituted Selenotungstate and Its Catalase-like Activity for the Detection of H2O2 and Ascorbic Acid

Jun Jiang, Lijuan Chen, Lulu Liu, Junwei Zhao et al.
5 citations
Inorganic Chemistry
Advanced Nanomaterials in Catalysis
0.59
article

Nicotinate-Modified Lanthanide-Substituted Selenotungstate and Its Catalase-like Activity for the Detection of H2O2 and Ascorbic Acid

Jun Jiang, Lijuan Chen, Lulu Liu, Junwei Zhao, Limin Cui
article en
5 citations

Abstract

A rigid nicotinate-modified lanthanide-substituted selenotungstate [H<sub>2</sub>N(CH<sub>3</sub>)<sub>2</sub>]<sub>6</sub>Na<sub>3</sub>H[La<sub>4</sub>SeW<sub>8</sub>(H<sub>2</sub>O)<sub>16</sub>(nica)<sub>2</sub>O<sub>28</sub>][SeW<sub>9</sub>O<sub>33</sub>]<sub>2</sub>·32H<sub>2</sub>O (<b>1</b>, Hnica = nicotinic acid) was synthesized and consists of two trivacant Keggin [B-α-SeW<sub>9</sub>O<sub>33</sub>]<sup>8-</sup> fragments and one unusual [SeW<sub>4</sub>O<sub>18</sub>]<sup>8-</sup> fragment bridged by a heterometallic [La<sub>4</sub>W<sub>4</sub>(H<sub>2</sub>O)<sub>16</sub>(nica)<sub>2</sub>O<sub>28</sub>]<sup>18-</sup> cluster. In the heterometallic cluster, two carboxyl O atoms in two nicotinate ligands directly coordinate with two W atoms in a stable C-O-W-O-W-O six-membered ring fashion. According to its catalase-like activity, <b>1</b> was utilized to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) by H<sub>2</sub>O<sub>2</sub> to produce blue oxidized TMB (ox-TMB), which can be used to establish a colorimetric sensing method for the detection of ascorbic acid. This work not only provides a promising platform for detecting H<sub>2</sub>O<sub>2</sub> and ascorbic acid but also expands the application potential of polyoxometalate-based materials in biological and clinical analyses.

Inorganic ChemistryVol. 63(43)
Henan University (CN)
National Natural Science Foundation of China, Henan University
Openalex Percentile: Top 33%
Advanced Nanomaterials in Catalysis
0.59
DOISourceOpenAlex
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Nicotinate-Modified Lanthanide-Substituted Selenotungstate and Its Catalase-like Activity for the Detection of H<sub>2</sub>O<sub>2</sub> and Ascorbic Acid — Jun Jiang, Lijuan Chen, et al. · Inorganic Chemistry (2024) | TGRS Research Map | TGRS