Ahn Dae Up, Sancaktar Erol
Department of Polymer Engineering, The University of Akron, Akron, OH 44325-0301, U. S. A.
Soft Matter. 2008 Jun 20;4(7):1454-1466. doi: 10.1039/b801515e.
Self-assembled 3-dimensional perpendicular cylinder orientation was achieved mainly by thermodynamic control of incompatibility between the block domains, and further precise modification of size and hexagonal alignment of perpendicular cylinders was also accomplished by kinetic control of diffusive molecular mobility of block copolymer microdomains. Since those two controls have been achieved by simple blending of minority homopolymers, the intrinsic advantages of block copolymer nanopatterning, such as fast and spontaneous 3-dimensional nanopatterning with high stability and reproducibility, have been completely preserved in this fabrication strategy. Thus, the fabrication strategy using the simple blending of a block copolymer with its homopolymer at an appropriate molecular weight creates new opportunities for the fabrication of low-cost and high-throughput nanostructured block copolymer materials with highly controlled 3-dimensional nanopatterns.
三维垂直圆柱取向的自组装主要通过对嵌段域之间不相容性的热力学控制来实现，并且通过对嵌段共聚物微区扩散分子迁移率的动力学控制，还实现了对垂直圆柱尺寸和六方排列的进一步精确修饰。由于这两种控制是通过少数均聚物的简单共混来实现的，嵌段共聚物纳米图案化的固有优势，如具有高稳定性和可重复性的快速自发三维纳米图案化，在这种制备策略中得到了完全保留。因此，在适当分子量下将嵌段共聚物与其均聚物简单共混的制备策略，为制造具有高度可控三维纳米图案的低成本、高通量纳米结构嵌段共聚物材料创造了新机会。
