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Metal-Ligand Bonds

Metal-Ligand Bonds

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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Preparation of Hydroxy-PAAm Hydrogels for Decoupling the Effects of Mechanotransduction Cues

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Rational Design of Mussel-Inspired Hydrogels with Dynamic Catecholato-Metal Coordination Bonds.

Pejman Heidarian¹, Abbas Z Kouzani¹, Akif Kaynak¹

¹School of Engineering, Deakin University, Geelong, Victoria, 3216, Australia.

Macromolecular Rapid Communications

|November 11, 2020

Summary

Mussel-inspired hydrogels utilize dynamic catecholato-metal bonds for advanced properties like self-healing and adhesion. This review covers their fabrication, applications in electronics and medicine, and future potential.

Keywords:

dynamic hydrogels mussel-inspired design self-adhesive hydrogels self-healing hydrogels

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Area of Science:

Materials Science
Biomimetic Engineering
Coordination Chemistry

Background:

Nature inspires smart functional materials, notably mussels adhering to surfaces via DOPA catechols.
Mussel-inspired hydrogels leverage catecholato-metal coordination bonds for unique properties.

Purpose of the Study:

To review recent advancements in fabricating mussel-inspired hydrogels using catecholato-metal coordination.
To discuss the potential applications of these hydrogels in various fields.
To explore current challenges and future prospects in this research area.

Main Methods:

Fabrication of hydrogels through catecholato-metal coordination chemistry.
Analysis of hydrogel properties including self-healing, adhesion, and responsiveness.
Review of existing literature on mussel-inspired hydrogel development and applications.

Main Results:

Mussel-inspired hydrogels exhibit ease of gelation, self-healing, self-recovery, adhesion, pH-responsiveness, shear-thinning, and tunable mechanical properties.
Catecholato-metal coordination bonds are key to achieving these dynamic properties.
These hydrogels show promise for applications in sensors, flexible electronics, tissue engineering, and wound dressing.

Conclusions:

Mussel-inspired hydrogels represent a significant advancement in functional materials due to their versatile properties.
The catecholato-metal coordination approach offers a robust platform for designing advanced hydrogels.
Further research into challenges and prospects will drive innovation in this interdisciplinary field.