Gao Yun-Xiang, Yu Shu-Hong, Cong Huaiping, Jiang Jun, Xu An-Wu, Dong W F, Cölfen Helmut
J Phys Chem B. 2006 Apr 6;110(13):6432-6. doi: 10.1021/jp0606199.
A novel way for directed solution growth of hollow superstructures of CaCO3 has been successfully developed on the basis of controlled self-assembly and polymer concentration gradients using a double-hydrophilic block copolymer with a hydrophobic modification as a directing agent. A formation mechanism of such rings is proposed on the basis of the formation of CaCO3 nanoparticles in unstructured block copolymer assemblies with subsequent aggregation of these primary nanoparticles. This leads to the formation of a polymer concentration gradient from the inside to the outside of the particle. As the polymer contains multiple chelating units, this leads to a selective dissolution of the center of the particle.
基于使用具有疏水改性的双亲水嵌段共聚物作为导向剂的可控自组装和聚合物浓度梯度，成功开发了一种用于碳酸钙空心超结构定向溶液生长的新方法。基于在无结构嵌段共聚物组装体中形成碳酸钙纳米颗粒以及这些初级纳米颗粒随后的聚集，提出了这种环的形成机制。这导致从颗粒内部到外部形成聚合物浓度梯度。由于聚合物包含多个螯合单元，这导致颗粒中心的选择性溶解。
