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Updated: Feb 20, 2026

Production and Targeting of Monovalent Quantum Dots

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

Valence-Engineering of Quantum Dots Using Programmable DNA Scaffolds.

Jianlei Shen^1,2, Qian Tang³, Li Li³

¹Institute of Molecular Medicine, Renji Hospital, School of Medicine and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200127, China.

Angewandte Chemie (International Ed. in English)

|October 24, 2017

Summary

Researchers developed a versatile DNA-programmed method to precisely control quantum dot (QD) valency for advanced bioimaging. This strategy enables tunable QD valences, enhancing nanoprobes for applications in live-cell imaging and nanophotonics.

Keywords:

DNA scaffolds nanostructures quantum dots valency control

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Last Updated: Feb 20, 2026

Production and Targeting of Monovalent Quantum Dots

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Area of Science:

Nanotechnology
Biotechnology
Materials Science

Background:

Precise control of quantum dot (QD) valency is essential for quantitative live-cell imaging.
Existing methods for QD valence control are limited to single valence types.

Purpose of the Study:

To present a general DNA-programmed strategy for modular and high-yield valence engineering of QDs.
To demonstrate the application of valence-engineered QDs in creating complex nanostructures and for bioimaging.

Main Methods:

Utilized programmable DNA scaffolds for QD valence engineering.
Generated QDs with tunable valences in a single step.
Constructed QD-QD, QD-AuNP, and FRET nanostructures.

Main Results:

Achieved near-quantitative yield (>95%) for valence-engineered QDs.
Successfully developed 12 types of topologically organized QD-QD and QD-AuNP structures.
Created 4 types of fluorescent resonance energy transfer (FRET) nanostructures.

Conclusions:

The DNA-programmed strategy offers high modularity and yield for QD valence engineering.
Valence-engineered QDs show significant potential as nanoprobes for bioimaging and nanophotonic applications.
Demonstrated utility in quantitative analysis and live-cell imaging.