Application of a multi-dentate amphiphilic compound to transfer silver nanoparticles into an organic solvent

A multi-dentate amphiphilic compound, 3,3′-(dodecylazanediyl)-bis-[N-(2-aminoethyl)propanamide] (12C–2NH2) has been synthesized. The molecular structure was characterized by Fourier transform infrared (FT-IR) spectroscopy, ultraviolet–visible (UV–vis) spectra, nuclear magnetic resonance (NMR) spectra, and fast atom bombardment mass (FAB-MS) spectra. 12C–2NH2 was employed to stabilize silver nanoparticles. Surface properties and stability of silver nanoparticles were controlled by adjusting the 12C–2NH2 to silver (0) molar ratio. 12C–2NH2 was also applied to transfer silver nanoparticles from an aqueous to an organic phase. The transfer efficiency depends on 12C–2NH2 concentration. When 12C–2NH2 to silver (0) molar ratio was 2:1, the highest efficiency of phase transfer to toluene was obtained. These 12C–2NH2 stabilized silver nanoparticles are very stable over a period of four days in toluene.

Graphical abstract3,3′-(dodecylazanediyl)-bis-[N-(2-aminoethyl)propanamide] was applied to transfer silver nanoparticles from an aqueous to an organic phase. The transfer efficiency depends on its concentration.Figure optionsDownload full-size imageDownload as PowerPoint slide