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Updated: Jul 15, 2026

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

Published on: August 7, 2016

Fluorescence correlation spectroscopy using quantum dots: advances, challenges and opportunities.

Romey F Heuff¹, Jody L Swift, David T Cramb

¹Department of Chemistry, University of Calgary, 2500 University Dr NW, Calgary, AB, Canada T2N 1N4.

Physical Chemistry Chemical Physics : PCCP

|April 14, 2007

Summary

Quantum dots are used to study biomacromolecules, but their blinking interferes. This review explores quantum dot blinking and its impact on fluorescence correlation spectroscopy measurements.

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Area of Science:

Nanotechnology
Biophysics
Spectroscopy

Background:

Semiconductor nanocrystals, or quantum dots, are valuable tools for studying biomacromolecule dynamics.
Their application in fluorescence correlation spectroscopy is widespread for observing molecular motion.
A significant challenge arises from the intrinsic photoluminescence intermittency of quantum dots, known as blinking.

Purpose of the Study:

To review the phenomenon of quantum dot blinking.
To explore how quantum dot blinking manifests within correlation spectroscopy measurements.
To understand the implications of blinking for analyzing biomacromolecule dynamics.

Main Methods:

General examination of quantum dot blinking mechanisms.
Analysis of blinking effects on fluorescence correlation spectroscopy data.
Review of existing literature on quantum dot blinking in spectroscopy.

Main Results:

Quantum dot blinking introduces artifacts and noise into correlation spectroscopy.
Blinking behavior complicates the accurate interpretation of biomacromolecule dynamics.
Understanding blinking is crucial for reliable spectroscopic analysis.

Conclusions:

Quantum dot blinking is an inherent property that significantly impacts fluorescence correlation spectroscopy.
Strategies to mitigate or account for blinking are essential for precise biomacromolecular studies.
Further research into blinking suppression or correction is warranted.