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Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications

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Published on: March 22, 2020

Kernel Homology in Gold Nanoclusters.

Shengli Zhuang^1,2, Lingwen Liao^1,2, Jinyun Yuan³

¹Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, P. R. China.

Angewandte Chemie (International Ed. in English)

|October 6, 2018

Summary

This summary is machine-generated.

Researchers introduce kernel homology in nanochemistry, describing metal nanoclusters with shared kernel structures and properties. This concept, exemplified by novel gold nanoclusters, parallels homology in organic chemistry.

Keywords:

electrochemical properties functional group homology metal nanoclusters structural elucidation

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Area of Science:

Nanochemistry
Inorganic Chemistry
Materials Science

Background:

Homology is a fundamental concept in organic chemistry, describing compounds with similar structures and properties.
This concept has not been previously explored or defined within the field of nanochemistry.

Purpose of the Study:

To introduce and define the concept of "kernel homology" for metal nanoclusters.
To demonstrate kernel homology using novel gold nanocluster structures.

Main Methods:

Synthesis of two novel gold nanoclusters: Au44(TBBT)26 and Au48(TBBT)28.
Structure determination of the synthesized nanoclusters using X-ray crystallography.
Comparison of the kernel structures and properties of these nanoclusters with existing ones, such as Au38(PET)24.

Main Results:

The novel gold nanoclusters, Au44(TBBT)26 and Au48(TBBT)28, were successfully synthesized and their structures solved.
Both nanoclusters feature a common Au23 bi-icosahedron kernel structure, capped with similar but distinct gold units (Au6 and Au8).
These nanoclusters, along with Au38(PET)24, exhibit shared kernel structures and similar electrochemical properties, supporting the concept of kernel homology.

Conclusions:

The concept of kernel homology is proposed for metal nanoclusters, analogous to homology in organic chemistry.
Kernel homology is defined by the presence of a shared "functional group" within the nanocluster kernel and similar overall properties.
This study establishes a new framework for understanding and classifying metal nanoclusters based on their structural and functional similarities.