Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

1.3K
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
1.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Prenucleation Clusters in Shell Formation of Photoluminescent Core/Shell Quantum Dots of Heavy-Metal-Free ZnTeSe/ZnSe.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Atomic-scale structural mechanisms governing dopant-induced stabilization and photoluminescence enhancement in CsPbI<sub>3</sub> quantum dots.

Nanoscale·2026
Same author

Prenucleation Clusters Assisting Development of Two Photoluminescent CdTeS Magic-Size Clusters with Optical Absorption Doublets.

The journal of physical chemistry letters·2026
Same author

Similar Prenucleation Clusters in Hot-Injection and Heating-Up Approaches to CdS Colloidal Semiconductor Quantum Dots.

The journal of physical chemistry letters·2026
Same author

Environmental Polarity Regulating Development of Magic-Size Clusters and Quantum Dots from CdTe Prenucleation Clusters.

Inorganic chemistry·2026
Same author

Ligand Synergy-Driven Room-Temperature Transformation from ZnSe Prenucleation Clusters to Magic-Size Clusters with Optical Absorption at 320 nm.

Inorganic chemistry·2025

Related Experiment Video

Updated: Apr 8, 2026

Synthesis of In37P20O2CR51 Clusters and Their Conversion to InP Quantum Dots
08:21

Synthesis of In37P20O2CR51 Clusters and Their Conversion to InP Quantum Dots

Published on: May 7, 2019

10.5K

Prenucleation Clusters as Intermediates in Shell Development via Monomer Addition Onto Photoluminescent Quantum Dots.

Yusha Yang1, Kui Yu1, Feng Yang2

  • 1Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|April 7, 2026
PubMed
Summary

Shell growth in quantum dots (QDs) occurs through monomer addition, forming prenucleation clusters (PNCs) and magic-size clusters (MSCs) before shell formation. This finding clarifies QD synthesis for improved nanomaterials.

Keywords:
cadmium sulfidechemical self‐assemblycore/shell quantum dotmagic‐size clusterprenucleation clustershell growth

More Related Videos

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.1K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.9K

Related Experiment Videos

Last Updated: Apr 8, 2026

Synthesis of In37P20O2CR51 Clusters and Their Conversion to InP Quantum Dots
08:21

Synthesis of In37P20O2CR51 Clusters and Their Conversion to InP Quantum Dots

Published on: May 7, 2019

10.5K
Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.1K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.9K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Colloidal semiconductor core/shell quantum dots (QDs) show significant promise for optoelectronic devices.
  • The precise mechanism of shell formation in QDs is not well understood, hindering their application development.

Purpose of the Study:

  • To elucidate the elusive pathway of shell formation in colloidal semiconductor quantum dots.
  • To identify the intermediate species and growth mechanism during the shell deposition process.

Main Methods:

  • Utilized cadmium sulfide (CdS) as a model system for shell growth on core QDs.
  • Introduced individual cadmium and sulfur-containing molecules to observe the initial stages of shell formation.
  • Characterized the formation of magic-size clusters (MSCs) and prenucleation clusters (PNCs) during shell deposition.

Main Results:

  • Demonstrated that shell growth proceeds via monomer addition, analogous to core QD synthesis.
  • Observed the formation of CdS magic-size clusters (MSCs) upon addition of precursor molecules.
  • Proposed a pathway involving molecule self-assembly into prenucleation clusters (PNCs), isomerization to MSCs, transformation to monomers (Mos), and subsequent growth onto the core QD.

Conclusions:

  • Provided compelling evidence for the molecule-PNC-Mo-shell transition pathway in QD shell formation.
  • Opened new avenues for synthesizing core/shell QDs using PNC samples.
  • Established a foundational understanding for designing and synthesizing functional nanomaterials with enhanced shell protection.