Department of Chemistry, Tsinghua University, Beijing 100084, China.
Chemistry. 2010 Feb 22;16(8):2342-8. doi: 10.1002/chem.200902504.
Microcontact printing is a heavily used surface modification method in materials and life science applications. This concept article focuses on the development of versatile stamps for microcontact printing that can be used to bind and release inks through molecular recognition or through an ink reservoir, the latter being used for the transfer of heavy inks, such as biomolecules and particles. Conceptually, such stamp properties can be introduced at the stamp surface or by changing the bulk stamp material; both lines of research will be reviewed here. Examples include supramolecular stamps with affinity properties, polymer-layer-grafted PDMS stamps, and porous multilayer-grafted PDMS stamps for the first case, and hydrogel stamps and porous stamps made by phase-separation micromolding for the second. Potential directions for future advancement of this field are also discussed.
微接触印刷是一种在材料和生命科学应用中广泛使用的表面改性方法。本文重点介绍了多功能印章的发展，这种印章可用于通过分子识别或通过油墨库来结合和释放油墨，后者用于传递重油墨，如生物分子和颗粒。从概念上讲，可以在印章表面引入这种特性，也可以通过改变印章的本体材料来实现；这两种研究路线都将在这里进行综述。例如，具有亲和力的超分子印章、聚合物层接枝 PDMS 印章和多孔多层接枝 PDMS 印章用于第一种情况，水凝胶印章和通过相分离微成型制造的多孔印章用于第二种情况。还讨论了该领域未来发展的潜在方向。
