Caruso F, Caruso RA, Mohwald H
F. Caruso and H. Mohwald, Max Planck Institute of Colloids and Interfaces, Rudower Chaussee 5, D-12489 Berlin, Germany. R. A. Caruso, Max Planck Institute of Colloids and Interfaces, Kantstrasse 55, D-14513 Teltow-Seehof, Germany.
Science. 1998 Nov 6;282(5391):1111-4. doi: 10.1126/science.282.5391.1111.
Hollow silica and silica-polymer spheres with diameters between 720 and 1000 nanometers were fabricated by consecutively assembling silica nanoparticles and polymer onto colloids and subsequently removing the templated colloid either by calcination or decomposition upon exposure to solvents. Scanning and transmission electron microscopy images demonstrate that the wall thickness of the hollow spheres can be readily controlled by varying the number of nanoparticle-polymer deposition cycles, and the size and shape are determined by the morphology of the templating colloid. The hollow spheres produced are envisioned to have applications in areas ranging from medicine to pharmaceutics to materials science.
通过将二氧化硅纳米颗粒和聚合物依次组装到胶体上，然后通过煅烧或在暴露于溶剂时分解来去除模板化胶体，制备了直径在720至1000纳米之间的中空二氧化硅和二氧化硅 - 聚合物球体。扫描电子显微镜和透射电子显微镜图像表明，通过改变纳米颗粒 - 聚合物沉积循环的次数，可以很容易地控制中空球体的壁厚，并且尺寸和形状由模板化胶体的形态决定。所制备的中空球体预计在从医学到制药再到材料科学等领域具有应用前景。
