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Synthesis of gold nanoparticles stabilized with di-(2-ethylhexyl)dithiophosphoric acid and tris(2-aminoethyl)amine

Authors :
V. V. Tatarchuk
A. V. Alekseev
Vladimir I. Zaikovskii
Liliya A. Sheludyakova
Anastasiya P. Sergievskaya
I. A. Druzhinina
T. M. Korda
Source :
Russian Journal of Inorganic Chemistry. 58:872-879
Publication Year :
2013
Publisher :
Pleiades Publishing Ltd, 2013.

Abstract

Methods for preparing gold nanoparticles (NPs) surface-stabilized with di-(2-ethylhexyl)dithiophosphoric acid (DTPA) and tris(2-aminoethyl)amine (TAEA), which endow the nanoparticles with hydrophobic and hydrophilic properties, are described. In the case of DTPA, Au-NPs are first synthesized with surfactant shells by means of reducing [AuCl4]− with hydrazine in inverted micelles of oxyethylated Triton N-42 in a low-polarity medium of decane; then, the micelles are destroyed by polar chloroform in the presence of DTPA, which has a great affinity to gold due to its sulfur donor atoms and substitutes for the surfactant on the surface of the nanoparticles. In preparing hydrophilic nanoparticles, [AuCl4]− is reduced with solid NaBH4 directly in a nonaqueous solution of TAEA based on an ethanol and 2-propanol (3: 10) mixture. The nanoparticles are characterized by elemental analysis (for Au, C, H, N, and Na), X-ray powder diffraction, electronic absorption spectra, IR spectra, photon-correlation spectra, and transmission electron microscopy (TEM).

Details

ISSN :
15318613 and 00360236
Volume :
58
Database :
OpenAIRE
Journal :
Russian Journal of Inorganic Chemistry
Accession number :
edsair.doi...........202a4fa38e3184b11db4efa9d4c8647c
Full Text :
https://doi.org/10.1134/s003602361307022x