Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China.
Langmuir. 2011 Jan 4;27(1):166-9. doi: 10.1021/la103586f. Epub 2010 Nov 17.
Biosynthesized gold nanoparticles (GNPs) were transferred from water to a hydrophobic ionic liquid (IL), [Bmim]PF(6), 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.
在烷基三甲基溴化铵的协助下，生物合成的金纳米粒子（GNPs）从水中转移到疏水性离子液体[Bmim]PF(6)中。通过十六烷基三甲基溴化铵（CTAB）的实例说明了这种相转移机制。通过动电位分析证明了 GNPs 和 CTAB 之间的相互作用。此外，还发现了 CTAB 和 IL 之间的阴离子交换过程。在此过程中，GNPs 上原位形成的疏水性 CTAPF(6)导致 GNPs 的疏水化和相转移。发现相转移效率与尺寸有关。
