title: Valence holes observed in nanodiamonds dispersed in water.
abstract: Colloidal dispersion is essential for most nanodiamond applications, but its influence on nanodiamond electronic properties remains unknown. Here we have probed the electronic structure of oxidized detonation nanodiamonds dispersed in water by using soft X-ray absorption and emission spectroscopies at the carbon and oxygen K edges. Upon dispersion in water, the π* transitions from sp(2)-hybridized carbon disappear, and holes in the valence band are observed.
authors.affiliation: Institute of Methods for Materials Development, Helmholtz-Zentrum Berlin, Albert-Einstein-Str. 15, 12489 Berlin, Germany. tristan.petit@helmholtz-berlin.de.
authors.forename: Tristan
authors.initials: T
authors.lastname: Petit
authors.forename: Mika
authors.initials: M
authors.lastname: Pflüger
authors.forename: Daniel
authors.initials: D
authors.lastname: Tolksdorf
authors.forename: Jie
authors.initials: J
authors.lastname: Xiao
authors.forename: Emad F
authors.initials: EF
authors.lastname: Aziz