Welch M Elizabeth, Ober Christopher K
Departments of Chemistry and Chemical Biology and Material Science and Engineering, Cornell University, Ithaca, New York 14850, United States.
ACS Macro Lett. 2013 Mar 19;2(3):241-245. doi: 10.1021/mz300656f. Epub 2013 Feb 27.
Surface modification using end-tethered polymer brushes is an attractive, versatile, and effective method of tailoring the surface properties of a material. However, because the chains are covalently attached, characterization of these films is limited. When polymer brushes are detached in their native state, as opposed to fabricating a cross-linked initiator support, additional analytical techniques can be employed. We report lifting off patterned polymer brush membranes from a silicon oxide surface via a hydrofluoric acid etch. This method allows examination of polymer brushes via TEM and thus provides information regarding the perfection of initiator self-assembled monolayer formation and brush growth, as well as the effect of different cross-linking procedures.
使用末端连接的聚合物刷进行表面改性是一种具有吸引力、多功能且有效的材料表面性质定制方法。然而，由于链是共价连接的，这些薄膜的表征受到限制。与制造交联引发剂载体相反，当聚合物刷以其天然状态脱离时，可以采用额外的分析技术。我们报告了通过氢氟酸蚀刻从氧化硅表面剥离图案化聚合物刷膜的方法。这种方法允许通过透射电子显微镜检查聚合物刷，从而提供有关引发剂自组装单层形成和刷生长的完善程度以及不同交联程序的效果的信息。
