Liu Juncheng, Anand Madhu, Roberts Christopher B
Department of Chemical Engineering, Auburn University, Auburn, Alabama 36849, USA.
Langmuir. 2006 Apr 25;22(9):3964-71. doi: 10.1021/la060450q.
This letter presents a straightforward and economic strategy to create aqueous Au nanoparticle dispersions using small amounts of beta-D-glucose as a "green" alternative to the conventional phase-transfer catalyst approach. Furthermore, this new process provides for efficient extraction of these monodisperse Au nanoparticles into an organic phase that was successfully processed into wide-area, locally ordered nanoparticle arrays and thin films using a precisely controlled CO2-expanded liquid particle deposition technique. This CO2-based technique allows for pressure-tunable particle deposition while eliminating the detrimental surface tension and dewetting effects common to normal solvent-evaporation techniques.
这封信介绍了一种简单且经济的策略，即使用少量β-D-葡萄糖作为传统相转移催化剂方法的“绿色”替代方案来制备水性金纳米颗粒分散体。此外，这一新工艺能够将这些单分散金纳米颗粒高效萃取到有机相中，该有机相使用精确控制的二氧化碳膨胀液体颗粒沉积技术成功加工成大面积、局部有序的纳米颗粒阵列和薄膜。这种基于二氧化碳的技术允许进行压力可调的颗粒沉积，同时消除了普通溶剂蒸发技术常见的有害表面张力和去湿效应。
