Two new approaches for patterning polymer films using templates prepared by microcontact printing
Two new approaches for patterning polymer films using templates prepared by microcontact printing
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DOI：
10.1021/ma001035m
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发表时间：
2001-02-27
期刊：
影响因子：
5.5
通讯作者：
Crooks, RM
中科院分区：
文献类型：
--
作者：
Ghosh, P;Lackowski, WM;Crooks, RM
报道了两种制备微米级超支化聚合物薄膜图案的新方法。这两种方法都依赖于通过微接触印刷（μ-CP）钝化反应性表面，然后将聚合物接枝到表面的未钝化区域。第一种方法涉及图案化的超支化聚合物复合材料膜含有聚（酰胺基胺）树枝状大分子和Gantrez（活性酸酐共聚物）到An上。这些结构是通过使用mu -CP用正十六烷硫醇自组装单层（SAM）部分钝化Au表面，然后将树枝状聚合物/Gantrez聚合物膜多次共价接枝到未钝化区域上来制备的。第二种图案化方法涉及活化的巯基十一烷酸（MUA）SAM的部分钝化，然后用层状聚（丙烯酸）/聚（乙二醇）（PAA/PEG）纳米复合材料对未钝化的SAM进行改性。用于制造这些结构的方法包括形成活化的MUA SAM、用于部分钝化MUA SAM的正十六烷基胺（C16 NH（2））的mu-CP、以及将PAA然后PEG依次共价接枝到未钝化区域上。椭圆偏振法，傅里叶变换红外外反射光谱（FTIR-ERS），光学显微镜，和双折射模式原子力显微镜（TM-AFM）提供了这些方法的可行性的证据。对于这两种类型的膜，获得具有类似于20 μ m的横向尺寸和< 1 μ m的边缘分辨率的聚合物线。聚合物厚度为约20-50 nm，这取决于重复聚合物接枝步骤的数目。
Two new methods for preparing micron-scale patterns of hyperbranched polymer films are reported. Both approaches rely on passivation of a reactive surface by microcontact printing (mu -CP) followed by polymer grafting to unpassivated regions of the surface. The first method involves patterning of a hyperbranched polymer composite film containing poly(amidoamine) dendrimers and Gantrez (an active anhydride copolymer) onto An. These structures are prepared by partial passivation of an Au surface with an n-hexadecanethiol self-assembled monolayer (SAM) using mu -CP, followed by multiple covalent grafting iterations of the dendrimer/Gantrez polymer film onto the unpassivated regions. The second patterning method involves partial passivation of an activated mercaptoundecanoic acid (MUA) SAM, followed by modification of the unpassivated SAM with a layered poly(acrylic acid)/poly(ethylene glycol) (PAA/PEG) nanocomposite. The approach for fabricating these structures consists of formation of an activated MUA SAM, mu -CP of n-hexadecylamine (C16NH(2)) to partially passivate the MUA SAM, and sequential covalent grafting of PAA and then PEG onto the unpassivated regions. Ellipsometry, Fourier transform infrared-external reflection spectroscopy (FTIR-ERS), optical microscopy, and tapping-mode atomic force microscopy (TM-AFM) provide evidence for the viability of these methods. For both types of films, lines of polymer having lateral dimensions of similar to 20 mum and edge resolutions of < 1 mum are obtained. The polymer thicknesses are on the order of 20-50 nm depending on the number of iterative polymer grafting steps.