The authors acknowledge funding support from JSPS, NEDO, and Futaba Corporation, and thank the Institute of Solid State Physics, University of Tokyo, Prof. Z. Hiroi, and M. Ichihara for access to HRTEM. A.K. is indebted to the Fonds der Chemischen Industrie for a Liebig habilitation fellowship.
Preparation and Behavior of Brownish, Clear Nanodiamond Colloids†
Article first published online: 13 APR 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 19, Issue 9, pages 1201–1206, May, 2007
How to Cite
Ozawa, M., Inaguma, M., Takahashi, M., Kataoka, F., Krüger, A. and Ōsawa, E. (2007), Preparation and Behavior of Brownish, Clear Nanodiamond Colloids. Adv. Mater., 19: 1201–1206. doi: 10.1002/adma.200601452
- Issue published online: 27 APR 2007
- Article first published online: 13 APR 2007
- Manuscript Revised: 12 SEP 2006
- Manuscript Received: 30 JUN 2006
- Futaba Corporation
A new facile method that employs high-power sonication is used to break up firmly agglutinated nanodiamonds and obtain dispersion just as effectively as stirred-media milling. The dispersion properties of the de-agglutinated nanodiamonds in various nonaqueous solvents, and the pH-dependent dispersion/precipitation behavior of the hydrosols are presented (see figure). The brownish color of the colloids is attributed mostly to the Rayleigh scattering superimposed over the finite absorption in the visible wavelength.