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目的 探索静电力对自组装膜表面上二维胶体粒子晶格结构的影响。方法 在硅和玻璃基底表面 ,采用自组装方法和表面反应得到带不同基团的自组装膜基底 ,通过控制基底自组装膜表面的电荷性质形成二维胶体粒子晶格结构。结果 当表面和胶体粒子带有相同的电荷基团时 ,静电斥力增加了粒子在表面的运动性 ,可以形成大面积的二维胶体粒子晶格结构 ;当表面和胶体粒子带有相反的电荷基团时 ,静电吸引作用阻碍了粒子在表面的运动 ,胶体粒子更容易吸附在自组装膜表面而形成无规则的单层胶体粒子结构。结论 提供了一种制备高质量大面积的二维胶体粒子晶格结构的新方法。
Objective To explore the influence of electrostatic force on the lattice structure of two-dimensional colloidal particles on the surface of self-assembled films. Methods Self-assembly method and surface reaction were used to fabricate self-assembled film substrates with different groups on the surface of silicon and glass substrates. Two-dimensional colloidal particle lattice structures were formed by controlling the charge properties of the surface self-assembled films. Results When the surface and the colloidal particles have the same charge groups, the electrostatic repulsion increases the mobility of the particles on the surface and forms a large-scale two-dimensional colloidal particle lattice structure. When the surface and the colloidal particles have the opposite charge groups When lumps, electrostatic attraction impedes the movement of particles on the surface, colloidal particles are more easily adsorbed on the surface of self-assembled film to form a random single-layer colloidal particle structure. The conclusion provides a new method for preparing high-quality large-area two-dimensional colloidal particle lattice structure.