title: Solid state NMR study of nanodiamond surface chemistry.
abstract: Solid state NMR measurements using 13C, 1H and 19F nuclei (MAS, CP-MAS) underline the surface chemistry of nanodiamonds from different synthesis (detonation, high pressure high temperature and shock compression). The comparison of the spin-lattice relaxation times T1 and physicochemical characterization (spin densities of dangling bonds, specific surface area and Raman and infrared spectroscopies) for the various samples, as synthesized, chemically purified and fluorinated allows the nature and the location of the various groups, mainly C-OH, C-H and C-F to be investigated. C-OH groups are located only on the surface whereas C-H and dangling bonds seem to be distributed in the whole volume. Fluorination was studied as a chemical treatment for purification and change of the hydrophobicity through the conversion of the C-OH groups into covalent C-F bonds.
authors: Clermont Université, UBP, Laboratoire des Matériaux Inorganiques (UMR CNRS 6002), 24, Avenue des Landais, 63177 Aubière, France. marc.dubois@univ-bpclermont.fr
authors: Marc
authors: M
authors: Dubois
authors: Katia
authors: K
authors: Guérin
authors: Nicolas
authors: N
authors: Batisse
authors: Elodie
authors: E
authors: Petit
authors: André
authors: A
authors: Hamwi
authors: Naoki
authors: N
authors: Komatsu
authors: Hayat
authors: H
authors: Kharbache
authors: Pascal
authors: P
authors: Pirotte
authors: Francis
authors: F
authors: Masin