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Related Experiment Video

Updated: May 27, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Quantum dot/cyclodextrin supramolecular systems based on efficient molecular recognition and their use for sensing.

Jordi Aguilera-Sigalat1, Juan M Casas-Solvas, Maria C Morant-Miñana

  • 1ICMOL, University of Valencia, Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain.

Chemical Communications (Cambridge, England)
|November 15, 2011
PubMed
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A novel supramolecular system using functionalized nanoparticles and cyclodextrins was developed for sensitive molecular detection. This system also allows for the separate recovery of all sensing components.

Area of Science:

  • Supramolecular Chemistry
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Development of sensitive and selective molecular sensing platforms is crucial for various analytical applications.
  • Nanoparticles offer unique properties for sensing, but their integration into reusable systems remains a challenge.
  • Cyclodextrins are widely used in host-guest chemistry and molecular recognition.

Purpose of the Study:

  • To create a supramolecular system for molecular sensing by combining functionalized nanoparticles and cyclodextrins.
  • To investigate the sensing capabilities of the developed system towards different analytes.
  • To establish a method for the individual recovery and reuse of all components within the sensing assay.

Main Methods:

  • Synthesis of ketoprofen-functionalized Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) core-shell nanoparticles.

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Production and Targeting of Monovalent Quantum Dots

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Last Updated: May 27, 2026

Compact Quantum Dots for Single-molecule Imaging
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  • Modification of beta-cyclodextrin (β-CD) with pyrene for supramolecular assembly.
  • Formation of the supramolecular system through non-covalent interactions between nanoparticles and β-CD.
  • Evaluation of the system's performance for molecular sensing of various analytes.

    • Main Results:

    • A stable supramolecular system was successfully constructed.
    • The system demonstrated effective molecular sensing capabilities for target analytes.
    • A facile strategy for the individual recovery of ketoprofen-functionalized CdSe/ZnS nanoparticles and pyrene-modified β-CD was achieved.
    • The recovered components retained their functionality for subsequent sensing applications.

    Conclusions:

    • The developed supramolecular system integrating functionalized nanoparticles and cyclodextrins is a promising platform for molecular sensing.
    • The ability to recover and reuse individual components enhances the sustainability and cost-effectiveness of the sensing assay.
    • This work provides a foundation for designing advanced reusable sensing systems based on supramolecular assemblies.