Division of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan.
Macromol Rapid Commun. 2013 Aug;34(15):1220-4. doi: 10.1002/marc.201300395. Epub 2013 Jun 12.
A free-standing polymer brush film with tailored thicknesses based on a colorless polydopamine (PDA) thin layer is prepared and characterized. The surface-initiated atom transfer radical polymerization (ATRP) of 2-hydroxyethyl methacrylate (HEMA) is performed on a PDA layer with thickness of ca. 6 nm, which generated an optically transparent and colorless free-standing PHEMA brush film (1.5 cm × 1.5 cm). Because the cross-linked PDA layer is used as the base for the polymer brushes, the reported method does not require cross-linking the polymer brushes. The free-standing film thicknesses of ≈16-75 nm are controlled by simply changing the ATRP reaction time. The results show that the free-standing PHEMA brush film transferred onto a plate exhibits a relatively smooth surface and is stable in any solvent.
基于无色聚多巴胺（PDA）薄层，制备并表征了具有定制厚度的独立聚合物刷膜。在厚度约为 6nm 的 PDA 层上进行 2-羟乙基甲基丙烯酸酯（HEMA）的表面引发原子转移自由基聚合（ATRP），生成光学透明且无色的独立 PHEMA 刷膜（1.5cm×1.5cm）。因为交联的 PDA 层被用作聚合物刷的基底，所以所报道的方法不需要交联聚合物刷。通过简单地改变 ATRP 反应时间，控制独立膜的厚度约为 16-75nm。结果表明，转移到平板上的独立 PHEMA 刷膜具有相对光滑的表面，在任何溶剂中均稳定。
