Kutuzov S, He J, Tangirala R, Emrick T, Russell T P, Böker A
Lehrstuhl für Physikalische Chemie II, Universität Bayreuth, D-95440, Bayreuth, Germany.
Phys Chem Chem Phys. 2007 Dec 28;9(48):6351-8. doi: 10.1039/b710060b. Epub 2007 Nov 13.
We investigate the concentration and size dependent self-assembly of cadmium selenide nanoparticles at an oil/water interface. Using a pendant drop tensiometer, we monitor the assembly kinetics and evaluate the effective diffusion coefficients following changes in the interfacial tension for the early and late stages of nanoparticle adsorption. Comparison with the coefficients for free diffusion reveals the energy barrier for particle segregation to the interface. The formation of a nanoparticle monolayer at the oil/water interface is characterised by transmission electron microscopy.
我们研究了硒化镉纳米粒子在油/水界面处浓度和尺寸依赖性的自组装过程。使用悬滴张力仪，我们监测组装动力学，并在纳米粒子吸附的早期和后期阶段，根据界面张力的变化评估有效扩散系数。与自由扩散系数的比较揭示了粒子向界面偏析的能垒。通过透射电子显微镜对油/水界面处纳米粒子单层的形成进行了表征。
