College of Science, Hunan Agricultural University, Changsha 410128, PR China.
College of Science, Hunan Agricultural University, Changsha 410128, PR China; State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
J Colloid Interface Sci. 2018 Dec 1;531:160-167. doi: 10.1016/j.jcis.2018.07.054. Epub 2018 Jul 19.
The photocontrolled self-assembly of coumarin-functionalized silica nanoparticles is fabricated and investigated. When these nanoparticles are uniformly dispersed in CHCl solution under 365 nm light illumination, four novel kinds of patterns are self-assembled on the bottom of glass beakers: circle patterns, square plate patterns, semi-annular and annular patterns, swirling patterns, which can be seen with the naked eye. Furthermore, these four patterns exhibit similar nanoscale morphologies: ring-like necklaces in nanoscale dimensions, and reveal interesting superhydrophobic property. In short, there exist two kinds of self-assembly of functionalized silica nanoparticles in two radically different dimensions, which can be potentially applied in self-cleaning fields and the construction of photocontrolled nanoscale structures and macroscale structures.
香豆素功能化二氧化硅纳米粒子的光控自组装被制备和研究。当这些纳米粒子在 365nm 光照射下均匀分散在 CHCl 溶液中时，在玻璃烧杯的底部自组装出四种新颖的图案：圆形图案、方形板图案、半环形和环形图案、漩涡图案，可以用肉眼看到。此外，这四种图案表现出相似的纳米级形貌：纳米级尺寸的环状项链，并呈现出有趣的超疏水性。总之，两种功能化二氧化硅纳米粒子在两种截然不同的维度上存在两种自组装方式，可潜在应用于自清洁领域以及光控纳米级结构和宏观结构的构建。
