标题： 二氧化硅纳米颗粒在磷脂膜上的冷凝 显示英文标题

标题： Condensation of Silica Nanoparticles on a Phospholipid Membrane

摘要： 瞬态层在空气和二氧化硅纳米颗粒水溶液之间的界面结构，已通过X射线反射率方法进行研究，该溶液中颗粒的尺寸分布已通过小角散射确定。 重构的极化率深度剖面表明存在由多层纳米颗粒组成的结构，其厚度比之前描述的结构大两倍以上。 1,2-二硬脂酰-sn-甘油-3-磷酸胆碱分子在水溶胶/空气界面的吸附伴随着阴离子二氧化硅纳米颗粒在界面的凝聚。 这种现象可以定性地解释为由于Na+阳离子渗透并积聚在磷脂膜中而形成的正表面电势。 显示英文摘要

摘要： The structure of the transient layer at the interface between air and the aqueous solution of silica nanoparticles with the size distribution of particles that has been determined from small-angle scattering has been studied by the X-ray reflectometry method. The reconstructed depth profile of the polarizability of the substance indicates the presence of a structure consisting of several layers of nanoparticles with the thickness that is more than twice as large as the thickness of the previously described structure. The adsorption of 1,2-distearoyl-sn-glycero-3-phosphocholine molecules at the hydrosol/air interface is accompanied by the condensation of anion silica nanoparticles at the interface. This phenomenon can be qualitatively explained by the formation of the positive surface potential due to the penetration and accumulation of Na+ cations in the phospholipid membrane.