- 作者: 楊鍾松、古國隆
- 作者服務機構: Department of Applied Chemistry, National Chia Yi University, Chia Yi 60083, Taiwan, R.O.C.
- 中文摘要: ZnSe colloidal nanoparticles prepared by the air-insensitive starting reagents, zinc chloride and selenium powder, have been size-selected in the Pluronic amphiphilic triblock copolymer [(EO)x(PO)y(EO)x] systems. The size-selection mechanism between the ZnSe nanoparticles and the triblock copolymers systems is a thermodynamic-dependent effect. We observe that nanoparticles with special volume (Vs) are trapped first by the triblock copolymers due to the faster entropic depletion interaction arising from the addition of surfactant-template (micelles) to colloidal nanoparticles. On the other hand, nanoparticles with sizes larger or smaller than Vs will not interact with the surfactant-templates. They either precipitate quickly by gravity (larger than Vs) or still retain their thermal motion in the aqueous phase (smaller than Vs) when Vs nanoparticles are caught by the surfactant-templates.
- 英文摘要: --
- 中文關鍵字: Size-selection; Entropic depletion; Nanoparticles; Surfactant-template.
- 英文關鍵字: --