Multipurpose organically modified carbon nanotubes: from functionalization to nanotube composites

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Chemistry

Background:

• Carbon nanotubes (CNTs) possess exceptional properties but suffer from poor processability and dispersion.
• Developing effective methods for CNT functionalization is crucial for their integration into advanced materials.

Purpose of the Study:

• To demonstrate covalent functionalization of CNTs via 1,3-dipolar cycloaddition for improved processability.
• To facilitate the preparation of CNT-based hybrid composites through simple mixing.

Main Methods:

• CNTs were covalently functionalized with phenol groups using 1,3-dipolar cycloaddition.
• The functionalized CNTs were dispersed in various polar solvents, including water.
• Hybrid composites were prepared by mixing functionalized CNTs with polymers and layered aluminosilicate clay minerals.

Main Results:

• Phenol-functionalized CNTs exhibited stable dispersions in polar solvents.
• Homogeneous, coherent, and transparent thin films and gels were successfully prepared.
• The functionalization method allowed for straightforward composite fabrication.

Conclusions:

• Covalent functionalization via 1,3-dipolar cycloaddition is a powerful strategy for enhancing CNT processability.
• This approach simplifies the creation of advanced CNT-based hybrid materials.
• The developed method opens avenues for transparent CNT films and gels in various applications.