Intrinsic infrared absorption for carbon–fluorine bonding in fluorinated nanodiamond

IR spectroscopy of fluorinated detonation nanodiamond demonstrates that an intense absorption band at ∼1344 cm^–1 and two smaller ones at ∼1324 and ∼1258 cm^–1 form the extended low wave-number wing of the observed consolidated spectrum in the range of 1100–1400 cm^–1. The intrinsic infrared absorption of CF_x bonding at the nanodiamond surface sites has been determined after subtraction of the contribution from remaining C–O and C–O–C groups inside the aggregates of tightly-bonded fundamental nanodiamond particles, which had not been subjected to fluorine attack and to their replacement by fluorine containing groups.