Multinuclear Ce^III-P^III-W^VI Cluster-Incorporated Phospho(III)tungstate Utilized in a Chip-Based Sensor for the...

Area of Science:

• Materials Science
• Nanotechnology
• Analytical Chemistry

Background:

• Early detection of breast cancer is crucial for improving patient outcomes.
• Development of sensitive and specific biosensors is key to advancing breast cancer diagnostics.

Purpose of the Study:

• To synthesize a novel high-nuclearity cerium-phosphotungstate cluster.
• To fabricate a chip-based sensor using this cluster for sensitive detection of breast cancer biomarkers, specifically microRNA-21.
• To explore the potential of polyoxometalate-based materials in advanced sensor applications.

Main Methods:

• Synthesis of a high-nuclearity Ce-P-W cluster: [H2N(CH3)2]22Na8[Ce24W12(H2O)42(H2ma)6(HPO3)18O30][(HP)2W14O52]6·200H2O (1).
• Fabrication of multilayered 1-PDDA films on chips for sensing interfaces.
• Development of a p-DNA/1-PDDA chip-based sensor for microRNA detection.

Main Results:

• The synthesized Ce-P-W cluster exhibits good conductivity when incorporated into 1-PDDA films.
• The p-DNA/1-PDDA chip-based sensor achieved high sensitivity for microRNA-21 detection.
• The sensor demonstrated a broad detection range (1 × 10^-17 M - 1 × 10^-9 M) and a low limit of detection (1.19 × 10^-18 M).

Conclusions:

• The study successfully synthesized a novel polyoxometalate material with potential for sensor applications.
• The developed chip-based sensor shows promise for sensitive and selective detection of breast cancer biomarkers.
• This research expands the application scope of polyoxometalate materials in integrated biosensing platforms.