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Related Experiment Video

Updated: Nov 4, 2025

Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

Published on: December 25, 2017

Size disproportionation among nanocluster transformations.

Chen Zhu¹, Luyao Lu¹, Fei Li¹

¹Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University Hefei Anhui 230601 P. R. China kangxi_chem@ahu.edu.cn.

Chemical Science

|September 23, 2024

Summary

This summary is machine-generated.

Gold doping induced size disproportionation in silver-copper nanoclusters, a rare transformation. This study reveals novel size evolution pathways for nanoclusters, advancing understanding of atomic-level structure changes.

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A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions

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A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions

A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions

Published on: February 5, 2016

Area of Science:

* Nanomaterials Science
* Atomic-level structure evolution
* Bimetallic and trimetallic nanoclusters

Background:

* Controllable nanocluster transformation is crucial for understanding structure evolution and properties.
* Most transformations involve size increase, decrease, or maintenance.
* Size disproportionation in nanocluster transformation is rarely reported.

Purpose of the Study:

* To investigate the effect of gold (Au) doping on bimetallic silver-copper (AgCu) nanoclusters.
* To explore the phenomenon of size disproportionation during nanocluster transformation.
* To report a novel case of Au-doping-induced size disproportionation in nanoclusters.

Main Methods:

* Synthesis of bimetallic (AgCu)₄₃ and trimetallic (AuAgCu)₄₃ nanoclusters.
* Controlled Au alloying of (AgCu)₄₃ nanoclusters.
* Thin-layer chromatography analysis for verification.

Main Results:

* Slight Au-doping resulted in size-maintained transformation to (AuAgCu)₄₃.
* Heavy Au alloying induced size disproportionation, forming smaller (AuAgCu)₃₃ and larger (AuAgCu)₅₆ nanoclusters simultaneously.
* Size disproportionation was confirmed via thin-layer chromatography.

Conclusions:

* Reported a novel instance of size disproportionation in nanocluster transformation.
* Demonstrated Au-doping as a method to induce this unique transformation.
* Findings provide insights into cluster size evolution mechanisms.