Abstract

Present work elaborates utilization of CN cross coupling reaction for the first time on a nanoscale level. An array of aryl halides carrying nitro, trifluoro, azido or aryl groups were coupled effectively with amine modified nanodiamond particles (ND-NH2) leading to the formation of secondary aromatic amine functionalized nanodiamond. Successful fabrication of organic groups on to the nanodiamond surface was established initially using FT-IR (Fourier transform infrared spectroscopy), then confirmed by 13C CP-MAS solid state NMR spectroscopy and elemental analysis. X-ray diffractometer (XRD) and Transmission electron microscopy (TEM) findings disclose that the surface modification do not alter the crystalline structure of nanodiamond. Furthermore, thermal stabilities and effective surface loadings for the functionalized NDs were investigated by thermogravimetric analysis. X-ray photoelectron spectroscopy (XPS) analysis exhibited the true perspective regarding elemental composition of functionalized NDs and corroborated the grafting indicating good yield of the reaction. In addition, attachment of hydrophobic groups augmented their dispersion in organic solvents with reduction in aggregation.

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