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Synthesis of gold nanoparticles stabilized with di-(2-ethylhexyl)dithiophosphoric acid and tris(2-aminoethyl)amine
- 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).
- Subjects :
- Chloroform
Materials Science (miscellaneous)
Inorganic chemistry
Infrared spectroscopy
Nanoparticle
Tris(2-aminoethyl)amine
Micelle
Inorganic Chemistry
chemistry.chemical_compound
chemistry
Pulmonary surfactant
Colloidal gold
Amine gas treating
Physical and Theoretical Chemistry
Nuclear chemistry
Subjects
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