期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 11, 页码 3817-3822出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201509937
关键词
cycloaddition; direct laser writing; microstructures; patterning; photochemistry
资金
- German Research Council (DFG)
- German Federal Ministry of Research and Education (BMBF)
- BIFTM program of the Helmholtz association
A highly efficient strategy for the simultaneous dual surface encoding of 2D and 3D microscaffolds is reported. The combination of an oligo(ethylene glycol)-based network with two novel and readily synthesized monomers with photoreactive side chains yields two new photoresists, which can be used for the fabrication of microstructures (by two-photon polymerization) that exhibit a dual-photoreactive surface. By combining both functional photoresists into one scaffold, a dual functionalization pattern can be obtained by a single irradiation step in the presence of adequate reaction partners based on a self-sorting mechanism. The versatility of the approach is shown by the dual patterning of halogenated and fluorescent markers as well as proteins. Furthermore, we introduce a new ToF-SIMS mode (delayed extraction) for the characterization of the obtained microstructures that combines high mass resolution with improved lateral resolution.
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