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Area of Science:

  • Supramolecular Chemistry
  • Nanomaterials Science
  • Analytical Chemistry

Background:

  • Cucurbit[n]urils (CB[n]s) are synthetic macrocycles with unique host-guest properties, attracting significant research interest.
  • Gold nanoparticles (Au NPs) and electrodes offer excellent physicochemical properties for sensing applications.
  • Combining CB[n]s with Au NPs and electrodes forms novel sensing platforms.

Purpose of the Study:

  • To review the preparation of CB[n]-functionalized Au NPs and electrodes.
  • To outline the construction and application of supramolecular junctions for sensing.
  • To discuss single-molecule analysis in CB[n]-based sensing platforms.

Main Methods:

  • Recognition Tunneling (RT)
  • Surface-Enhanced Raman Spectroscopy (SERS)
  • Single-Molecule Force Spectroscopy (SMFS)
  • Electrochemical Sensing (ECS)

Main Results:

  • Progress in preparing CB[n]-functionalized Au NPs and electrodes is detailed.
  • The construction and application of supramolecular junctions for sensing are discussed.
  • Methods for single-molecule analysis using these platforms are highlighted.

Conclusions:

  • Supramolecular junctions are crucial for single-molecule analysis in CB[n]-based sensing.
  • These platforms offer insights into supramolecular interactions and chemical reactions.
  • Future developments and challenges in CB[n]-mediated sensing are considered.