Label-free probes using DNA-templated silver nanoclusters as versatile reporters

Yahui Guo, Xinyue Pan, Wenya Zhang, Zhigang Hu, Ka Wang Wong, Zhike He, Hung Wing Li*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

22 Citations (Scopus)

Abstract

DNA-templated silver nanoclusters (DNA-AgNCs) have demonstrated pervasive applications in analytical chemistry recently. As a way of signal output in DNA-based detection methods, DNA-AgNCs have prominent advantages: first, the recognition and synthesizing sequences are naturally integrated in one DNA probe without any chemical modification or connection; second, the emissive wavelength of DNA-AgNCs can be adjusted in a wide range by employing different sequences; third, DNA-AgNCs can be utilized for producing not only fluorescence, also electrochemiluminescence and electrochemical signals. Besides, they also show potential applications for cell imaging, and are considered to be one of the most ideal nanomaterials for in-vivo imaging due to their ultra-small particle size. In this review, a brief and comprehensive introduction of DNA-AgNCs is firstly given, then label-free probes using DNA-AgNCs are classified and summarized, lastly concluding perspectives are provided on the defects and application potentials.

Original languageEnglish
Article number111926
JournalBiosensors and Bioelectronics
Volume150
DOIs
Publication statusPublished - 15 Feb 2020

Scopus Subject Areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry

User-Defined Keywords

  • Biosensor
  • DNA silver nanoclusters
  • Electrochemiluminescence
  • Fluorescence
  • Label free

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