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Labeling DNA Probes

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
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Updated: Aug 31, 2025

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Nanoparticle-based single molecule fluorescent probes.

Xueqian Chen¹, Yuhao Liu¹, Xiaoting Liu¹

¹Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, China.

Luminescence : the Journal of Biological and Chemical Luminescence

|August 18, 2022

Summary

This summary is machine-generated.

This review explores nanoparticles as highly sensitive single molecule fluorescent probes. Various nanoparticle types enhance detection sensitivity for advanced applications.

Keywords:

fluorescent probes nanoparticles sensing strategies single molecule detection

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Area of Science:

Nanotechnology
Biophysics
Materials Science

Background:

Single molecule fluorescent probes offer high sensitivity and fast response.
Nanoparticles possess unique optical properties ideal for sensitive detection.
Current research extensively utilizes nanoparticles for single molecule analysis.

Purpose of the Study:

To review various nanoparticles used as single molecule fluorescent probes.
To explore the optical properties and applications of these nanoparticles.
To discuss how nanoparticles enhance detection sensitivity and future trends.

Main Methods:

Review of existing literature on nanoparticle-based fluorescent probes.
Analysis of optical properties of different nanoparticle types.
Examination of sensing strategies employed with nanoparticles.

Main Results:

Identified quantum dots, carbon dots, nanodiamonds, and others as key probes.
Demonstrated nanoparticle-enhanced sensitivity in various detection strategies.
Highlighted the broad applicability of nanoparticles in single molecule detection.

Conclusions:

Nanoparticles significantly improve sensitivity in single molecule fluorescent probes.
Diverse nanoparticle types offer unique advantages for specific applications.
Future research directions focus on optimizing nanoparticle probes for advanced sensing.