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Metal-Ligand Bonds

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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...

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Updated: Dec 26, 2025

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Published on: February 20, 2016

Transition metal complex/gold nanoparticle hybrid materials.

Cristóbal Quintana¹, Marie P Cifuentes, Mark G Humphrey

¹Research School of Chemistry, Australian National University, Canberra ACT 2601, Australia. mark.humphrey@anu.edu.au.

Chemical Society Reviews

|March 10, 2020

Summary

Transition metal complex (TMC)/gold nanoparticle (AuNP) hybrids offer improved stability and functionality over organic compound (OC)/AuNP hybrids. This review highlights their synthesis, characterization, and diverse applications in sensing, imaging, and catalysis.

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Gold Nanoparticle Synthesis

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Gold Nanoparticle Synthesis

Gold Nanoparticle Synthesis

Published on: July 10, 2021

Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

Gold nanoparticles (AuNPs) are widely used but often limited by organic coatings (OCs).
Existing OC/AuNP hybrids lack stability and desired properties like reversible redox behavior.
Transition metal complex (TMC)/AuNP hybrids emerge as superior alternatives.

Purpose of the Study:

To review the current state of TMC/AuNP hybrid research.
To discuss synthesis, characterization, and applications of these novel nanomaterials.
To assess their potential in various scientific and technological fields.

Main Methods:

Review of existing literature on TMC/AuNP hybrids.
Analysis of synthesis methods: one-phase, two-phase, and post-synthesis.
Evaluation of characterization techniques and their combined utility.
Critique of applications in sensing, imaging, and catalysis.

Main Results:

TMC/AuNP hybrids overcome limitations of OC/AuNP systems.
Post-nanoparticle synthesis methods offer distinct advantages.
Multiple characterization techniques are crucial for comprehensive analysis.
Promising applications demonstrated in luminescence, electrochemical, and electro-optical sensing.

Conclusions:

TMC/AuNP hybrids represent a significant advancement in nanomaterial design.
Their tunable properties offer vast potential for future applications.
Further research is warranted to fully exploit their capabilities in advanced technologies.