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Functional Carbon Quantum Dots: A Versatile Platform for Chemosensing and Biosensing.

Hui Feng1, Zhaosheng Qian1

  • 1Department of Chemistry, College of Life Science and Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua, Zhejiang Province, People's Republic of China.

Chemical Record (New York, N.Y.)
|November 25, 2017
PubMed
Summary

Carbon quantum dots (CQDs) are versatile fluorescent nanomaterials with broad applications in sensing. This review highlights their development, fluorescence properties, and use in advanced chemosensors and biosensors for detecting enzymes, cancer cells, and bacteria.

Keywords:
biosensingcarbon quantum dotschemosensingdisaggregation-induced emissionphoto-induced electron transfer

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Analytical Chemistry

Background:

  • Carbon quantum dots (CQDs) are emerging fluorescent nanomaterials.
  • They possess excellent optical properties, biocompatibility, and facile synthesis.
  • CQDs show significant potential in chemosensing and biosensing.

Purpose of the Study:

  • To provide an overview of CQDs, including their origin and preparation.
  • To discuss the fluorescence mechanisms of CQDs.
  • To focus on the development and applications of functional CQDs in sensing.

Main Methods:

  • Review of literature on CQDs synthesis and properties.
  • Discussion of fluorescence origin and mechanisms.
  • Summarization of functional CQDs for sensing applications.

Main Results:

  • CQDs offer a versatile platform for developing sensitive and selective sensors.
  • Functional CQDs enable precise detection of enzyme activity.
  • CQDs facilitate fluorescent identification of cancer cells and bacteria.

Conclusions:

  • Functional carbon quantum dots represent a powerful tool for advanced chemosensing and biosensing.
  • Their unique properties support applications ranging from enzyme assays to pathogen and cancer cell detection.
  • Further research into CQDs will continue to expand their utility in diagnostics and environmental monitoring.