Transfer of Biosynthesized Gold Nanoparticles from Water into an Ionic Liquid Using Alkyltrimethyl Ammonium Bromide: An Anion-Exchange Process

作者：Zhou Yao; Lin Wenshuang; Wang Huixuan; Li Qingbiao^*; Huang Jiale; Du Mingming; Lin Liqin; Gao Yixian; Lin Ling; He Ning

来源：Langmuir, 2011, 27(1): 166-169.

DOI：10.1021/la103586f

Biosynthesized gold nanoparticles (GNPs) were transferred from water to a hydrophobic ionic liquid (IL), [Bmim]PF6, with the assistance of alkyl trimethyl ammonium bromide. The phase transfer mechanism was illustrated through the exemplification of cetyltrimethyl ammonium bromide (CTAB). Interaction between GNPs and CTAB was demonstrated through zeta potential analysis. Moreover, an anion-exchange process was discovered between CTAB and IL. During the process, the hydrophobic CTAPF(6) formed in situ on the GNPs led to the hydrophobization and thus phase transfer of the GNPs. The phase transfer efficiency was found to be size-dependent.

• 出版日期2011-1-4
• 单位厦门大学