Short high purified carboxylic single-walled carbon nanotubes (SWCNTs-COOH) are widely used in various advanced applications due to their unique properties. In the field of biomedical engineering, they serve as efficient drug delivery carriers, enabling targeted and controlled release of therapeutic agents. Their functionalization with carboxylic groups enhances biocompatibility and facilitates conjugation with biomolecules, making them suitable for biosensors and diagnostic tools.

In electronics, SWCNTs-COOH are utilized to develop high-performance conductive films, transistors, and flexible electronics, owing to their excellent electrical conductivity and mechanical strength. They also play a crucial role in energy storage systems, such as supercapacitors and lithium-ion batteries, by improving charge transfer and electrode stability.

Additionally, these nanotubes are employed in environmental applications, including water purification and pollutant detection, due to their high surface area and adsorption capabilities. Their compatibility with polymers makes them ideal for reinforcing composite materials, enhancing mechanical, thermal, and electrical properties in aerospace, automotive, and construction industries. Overall, SWCNTs-COOH are versatile nanomaterials driving innovation across multiple sectors.