ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 61, Number 4
JKCSEZ 61(4)
August 20, 2017 

One-phase method to prevent the initial formation of Ag(I) thiolate layered materal from the mixture of AgNO3 and thiols was previously developed to generate TP (Thiolate-Protected)-nanosilver. In this modified method, AgNO3 is added to the mixtures of NaBH4 and thiols in ethanol. This method was so successful that it was applied to synthesize TP-nanogold and nanoplatinum. The synthesis and characterization of these nanoparticles by ultraviolet-visible (UV-vis) absorption spectra, transmission electron microscopy (TEM) pictures, X-ray powder differaction (XRD) patterns and infrared(IR) spectra are described. The results show that colloidal nanoparticles are spherical or oval shape and the mean sizes for TP-nanogold and nanoplatinum are about 3~7 nm and below 2 nm, respectively. The conformation of polymethylene [-(CH2)7-] sequence in octanethiolate attached to nanogold was elucidated as trans.