For custom functionalization density, specific surface group ratios, or volume pricing, contact our technical team. Carbon nanotube functionalization is the controlled attachment of chemical groups to nanotube surfaces, either covalently (forming direct C–X bonds to the sp² carbon lattice) or non-covalently (through π–π stacking, wrapping, or physisorption). The purpose is to convert pristine CNTs — chemically inert, hydrophobic, and strongly bundled — into CNTs that can be dispersed in specific solvents or matrices, bond to target surfaces, or participate in chemical reactions. Functional group density is measured by TGA (mass loss in the 200 to 600 C range corresponds to functional groups), XPS (atomic percent of N, O, F at the surface), Boehm titration (for acidic groups specifically), and Raman spectroscopy (D/G ratio increases with covalent functionalization). Each batch ships with TDS reporting the relevant characterization for the specific functional group; full XPS or TGA reports are available on request. SDS documentation is available from our SDS page. We offer additional acid-purified grades for biomedical research.
