Multi‐functionalization of carbon nanotubes through the grafting of diazo compounds

Systematic studies on the covalent functionalization of multi‐walled carbon nanotubes were performed bya series of azo molecules with different substituents. For this investigation, 4‐substituted diazonium reagents have beenused in the reaction with the functionalized multi‐walled carbon nanotubes. We analyzed the effect of the substitutedgroups on the diazo component affinity in the grafting. Also, the structural differences of the final products wereevaluated by visual dispersion test, ultraviolet‐visible absorption; Fourier transforms infrared, Raman and severalcomplementary techniques (Scanning electron microscopy, thermal gravimetric analysis and colorimetry test). Nuclearmagnetic resonance spectroscopy has been used to confirm the allylic protons attached to the surface of carbonnanotubes after functionalization

کلیدواژه ها:

Multi‐walled carbon nanotube ، Grafting ، Functionalization ، Diazo compound ، Characterization