Colloidal gold, prepared by interphase reduction

The interphase preparation of gold dispersions in hexane using N,N-tridecyl (3-aza-3decyltridecan)ammonium iodide as the phase transfer agent is descri bed. Dispersity and phase composition of the disperse phase of colloidal di spersions were analysed by chemical analysis, transmission electron microsc opy (TEM), X-ray diffractometry XRD), X-ray photoelectron spectroscopy (XPS ) and UV-vis spectroscopy. The disperse phase of the colloidal dispersion i s shown to consist of crystalline spherical particles of gold having the me an diameter ca. 2.6 nm (sigma = 0.47). The properties of the gold film depo sited at the walls of the reaction Vessel in the aqueous phase simultaneous ly with formation of the gold hexane colloidal dispersion are also describe d. (C) 2001 Elsevier Science B.V. All rights reserved.