Building Tailored Interfaces through Covalent Coupling Reactions at Layers Grafted from Aryldiazonium Salts

Area of Science:

• Materials Science
• Surface Chemistry

Background:

• Aryldiazonium ions are versatile reagents for surface modification.
• They form stable covalent bonds with a wide range of substrates.
• Their use is compatible with both organic and aqueous solvents.

Purpose of the Study:

• To summarize methods for covalently coupling target species to aryldiazonium-derived anchor layers.
• To review the applications of materials modified using this strategy.

Main Methods:

• Grafting of aryldiazonium ions onto substrates to form anchor layers.
• Postfunctionalization of anchor layers by coupling target species.

Main Results:

• Aryldiazonium chemistry provides stable, covalently bonded surface modifications.
• The method allows for the immobilization of diverse species via postfunctionalization.
• Resulting materials are suitable for applications in sensors, catalysis, and optoelectronics.

Conclusions:

• Aryldiazonium ion-based surface modification is a powerful and adaptable technique.
• This strategy significantly expands the possibilities for creating functionalized materials.
• The review highlights the broad applicability of this surface chemistry approach.