申请人:Ryan Declan
公开号:US20070000866A1
公开(公告)日:2007-01-04
The present invention provides a series of methods, compositions, and articles for patterning a surface with multiple, aligned layers of molecules, by exposing the molecules to electromagnetic radiation. In certain embodiments, a single photomask acts as an area-selective filter for light at multiple wavelengths. A single set of exposures of multiple wavelengths through this photomask may make it possible to fabricate a pattern comprising discontinuous multiple regions, where the regions differ from each other in at least one chemical and/or physical property, without acts of alignment between the exposures. In certain embodiments, the surface includes molecules attached thereto that can be photocleaved upon exposure to a certain wavelength of radiation, thereby altering the chemical composition on at least a portion of the surface. In some embodiments, the molecules attached to the surface may include thiol moieties (e.g., as in alkanethiol), by which the molecule can become attached to the surface. In some embodiments, the molecules may be terminated at the unattached end with photocleavable groups. In other embodiments, a molecule that was photocleaved may be exposed to another molecule that binds to the photocleaved molecule. In certain cases, the molecules may be terminated at the unattached end with hydrophilic groups that may, for example, be resistant to the adsorption of proteins. In other cases, the molecules may be terminated at the unattached end with end groups that are not resistant to the adsorption of proteins. In certain embodiments, the techniques are used to pattern simultaneously two different regions that are resistant to the adsorption of proteins, and a third region that does not resist the adsorption of proteins.
本发明提供了一系列方法、组成物和物品,用于通过将分子暴露于电磁辐射中,使表面具有多个对齐的分子层。在某些实施例中,单个光掩模作为多个波长的光的面积选择性过滤器。通过这个光掩模的多个波长的单个曝光可能使得制造出包含不连续的多个区域的图案,其中这些区域在至少一个化学和/或物理性质上不同于彼此,而无需进行曝光之间的对准操作。在某些实施例中,表面包括附着在其上的分子,这些分子在暴露于特定波长的辐射下可以光解,从而改变表面上至少一部分的化学组成。在某些实施例中,附着在表面上的分子可能包括硫醇基团(例如,作为烷基硫醇),通过这些基团,分子可以附着在表面上。在某些实施例中,分子可以在未附着端终止于光解性基团。在其他实施例中,已光解的分子可以暴露于结合到光解的分子上的另一种分子。在某些情况下,分子可以在未附着端终止于亲水性基团,例如,对蛋白质的吸附具有抵抗力。在其他情况下,分子可以在未附着端终止于不具有抵抗蛋白质吸附的末端基团。在某些实施例中,这些技术被用于同时制造两个不会吸附蛋白质的不同区域和一个不具有抵抗蛋白质吸附的第三个区域。