Recent trends in covalent functionalization of 2D materials

Area of Science:

• Materials Science
• Surface Chemistry
• Nanotechnology

Background:

• Two-dimensional (2D) materials possess unique properties due to their atomic thinness and high surface-area-to-volume ratio.
• Unlike bulk materials, 2D materials lack dangling bonds, making surface functionalization critical for property modification.
• Uniform surface chemical potential in 2D materials necessitates precise control over surface interactions.

Purpose of the Study:

• To comprehensively review covalent functionalization methods for 2D materials.
• To explore the impact of functionalization on the electrical, mechanical, and chemical properties of 2D materials.
• To identify challenges and suggest future research directions in 2D material chemistry.

Main Methods:

• Discussion of potential functionalization sites on 2D material surfaces.
• Introduction of various covalent functionalization techniques.
• Overview of direct synthesis strategies for functionalized 2D materials.
• Summary of characterization methods for assessing functionalized 2D materials.

Main Results:

• Covalent functionalization offers a pathway to tune the intrinsic properties of 2D materials.
• Different functionalization sites and techniques lead to distinct property modifications.
• Direct synthesis methods enable the creation of tailored functionalized 2D materials.
• Characterization techniques are essential for verifying successful functionalization and property changes.

Conclusions:

• Covalent functionalization is a key strategy for unlocking the full potential of 2D materials.
• Addressing current challenges will expand the scope and understanding of 2D material chemistry.
• This review provides a foundational understanding for researchers working with functionalized 2D materials.