Related Experiment Video
Updated: Feb 13, 2026

Bacterial Detection & Identification Using Electrochemical Sensors
Published on: April 23, 2013
A Heterometallic Decanuclear CeIII-WVI Cluster Incorporated Antimonotungstate for Sensitive Electrochemical Detection
Yunping Li1, Yuanshuo Dai1, Zhigang Tang1
1Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, China.
Abstract:
Multidrug resistance genes (MDRG) overexpression represents a critical factor contributing to chemotherapeutic resistance in cancer, necessitating the development of highly sensitive detection technologies for early diagnosis. Herein, we synthesized a heterometallic decanuclear CeIII-WVI cluster incorporated antimonotungstate pentamer Na16H7[Ce4W6O13(H2O)12][B-α-SbW9O33]5·40H2O (1) via the reaction of the [B-α-SbW9O33]9- precursor with Ce3+ cations in CH3COOH-CH3COONa buffer system. Its polyanionic architecture comprises a heterometallic decanuclear [Ce4W6O13(H2O)6]22+ core encapsulated by five [B-α-SbW9O33]9- units. Notably, 1 represents the first reported pentamer within the rare-earth incorporated antimonotungstate family. By employing 1 as a multifunctional dopant, an electroconductive 1@PNMPy film was fabricated through electropolymerization of N-methylpyrrole (NMPy), demonstrating enhanced conductivity and stability. The resulting 1@PNMPy-based electrochemical DNA biosensor (1-ECDB) achieves sensitive detection of MDRG, exhibiting a broad linear response range (1.0 × 10-14 to 1.0 × 10-7 M) and a low detection limit (4.33 fM). Moreover, the 1-ECDB exhibits acceptable specificity, anti-interference capability, reproducibility and long-term stability. Its practical applicability has been validated in diluted human serum samples, yielding recovery rates ranging from 94.2 to 109.2%. This work pioneers the application of POM-conductive polymer composite films in the electrochemical detection of MDRG, bridging the molecular engineering of POMs with biomedical sensing technologies.
More Related Videos
08:59Looking for Driver Pathways of Acquired Resistance to Targeted Therapy: Drug Resistant Subclone Generation and Sensitivity Restoring by Gene Knock-down
Published on: December 11, 2017
23:06The MODS method for diagnosis of tuberculosis and multidrug resistant tuberculosis
Published on: August 11, 2008
Related Concept Videos
What is an Electrochemical Gradient?
The chemical gradient relies on differences in the abundance of a substance on the outside versus the inside of a cell and flows from areas of high to low ion concentration. In contrast, the electrical gradient revolves around an...
Cluster Sampling Method
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
Vesicular Tubular Clusters
With the help of motor proteins such...
Resistivity
Resistance
Gene Flow