A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul., 28, Moscow 119991, Russia.
Soft Matter. 2017 Nov 22;13(45):8525-8533. doi: 10.1039/c7sm01560g.
By means of computer modelling, the self-organization of dense planar brushes of macromolecules with amphiphilic monomer units was addressed and their state diagram was constructed. The diagram of states includes the following regions: disordered position of monomer units with respect to each other, strands composed of a few polymer chains and lamellae with different domain spacing. The transformation of lamellae structures with different domain spacing occurred within the intermediate region and could proceed through the formation of so-called parking garage structures. The parking garage structure joins the lamellae with large (on the top of the brushes) and small (close to the grafted surface) domain spacing, which appears like a system of inclined locally parallel layers connected with each other by bridges. The parking garage structures were observed for incompatible A and B groups in selective solvents, which result in aggregation of the side B groups and dense packing of amphiphilic macromolecules in the restricted volume of the planar brushes.
通过计算机建模，研究了具有两亲性单体单元的高分子密集平面刷的自组织，并构建了它们的状态图。状态图包括以下区域：单体单元之间的无序位置、由几条聚合物链组成的链和具有不同畴间距的层片。不同畴间距的层片结构的转变发生在中间区域，并且可以通过形成所谓的停车库结构来进行。停车库结构将具有大畴间距（在刷的顶部）和小畴间距（靠近接枝表面）的层片连接起来，其外观类似于由倾斜的局部平行层组成的系统，这些层通过桥相互连接。在选择性溶剂中，对于不相容的 A 和 B 基团，可以观察到停车库结构，这导致 B 基团的聚集和两亲性大分子在平面刷的受限体积中的密集堆积。
