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Recent Advances in Silicon Quantum Dot-Based Fluorescent Biosensors.

Yanan Zhang1, Ning Cai2, Vincent Chan3

  • 1College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, China.

Biosensors
|March 29, 2023
PubMed
Summary

Silicon quantum dots (SiQDs) are versatile nanomaterials for fluorescent biosensors. This review highlights their synthesis, applications, and future potential in detecting analytes.

Keywords:
bioimagingbiosensorsfluorescence detectionphotoluminescentsilicon quantum dot

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biomedical Engineering

Background:

  • Silicon quantum dots (SiQDs) are zero-dimensional nanomaterials with unique optical properties, biocompatibility, and small size.
  • SiQDs have emerged as promising candidates for developing advanced fluorescent sensors.
  • Their application in chemical and biological sensing is rapidly expanding.

Purpose of the Study:

  • To review recent advancements in SiQD-based fluorescent biosensors.
  • To discuss synthesis strategies, sensor design, and fabrication methods.
  • To explore future trends and challenges in the field.

Main Methods:

  • Systematic summary of water-soluble SiQD synthesis over the past decade.
  • Detailed introduction to SiQD-based fluorescent biosensor design and fabrication.
  • Focus on analyte-induced photoluminescence changes, SiQD hybrids, and ligand modification.

Main Results:

  • Progress in synthesizing water-soluble SiQDs is systematically reviewed.
  • Latest achievements in SiQD-based fluorescent biosensor design are presented.
  • Key strategies including analyte-induced fluorescence changes and hybrid materials are highlighted.

Conclusions:

  • SiQD-based fluorescent biosensors show significant potential for high-performance sensing.
  • Further research is needed to address current challenges and unlock future prospects.
  • This review provides a comprehensive overview for researchers in the field.