Carbon nanotubes with their unique one-dimensional structure! Excellent mechanical properties $ electricity $ optical and other properties! Widely concerned by academia, but in practical applications due to the powerful van der Waals force of nanomaterials! Carbon nanotubes are easy to gather together , At the same time, carbon nanotubes are insoluble in water and organic solvents! Therefore, its practical application is limited, so the surface modification of carbon nanotubes is necessary! It can be well dispersed in the solvent.

Covalent modification mainly utilizes the characteristic that the ends and bends of carbon nanotubes are easily broken by oxidation and converted into carboxyl and hydroxyl groups at the same time. The commonly used method is to oxidize the opening with concentrated acid, and cut it into a short tube, so that the defect site at the end or (and) the side wall is provided with carboxyl and hydroxyl groups, and then modified.

The main application directions of functionalized carbon nanotubes:

Optical communications: optical switches, modulators, lasers, etc.