Synthesis of Gold Nanoparticles by Using a Bolaform Schiff Base Amphiphile at Liquid-Liquid interface

摘要

Gold nanoparticles were synthesized via a bolaform amphiphile with hydrophilic ethyleneamine spacer at a liquid-liquid interface. By stirring the aqueous solution containing AuCl_4~-ions with the chloroform solution of bolaform amphiphile, AuCl_4~- ions were transferred into the oil phase and reduced to gold nanoparticles. UV-vis and FT-IR spectral measurements indicated that the bolaform amphiphile could serve as both capping and reducing agents. Crystalline gold nanoparticles were predominantly obtained if the bolaform amphiphile solutions with appropriate concentrations were applied. The generated gold nanoparticles were characterized by UV-vis spectroscopy and atomic force spectroscopy (AFM). It is predicted that gold and other novel metal nanostractures may be produced by bolaform amphiphiles whose properties can be well-controlled by designing different headgroups, spacers or substituted groups.