期刊
ANALYTICAL CHEMISTRY
卷 84, 期 16, 页码 6921-6925出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac301616v
关键词
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资金
- Dutch Polymer Institute (DPI, Technology Area High Throughput Experimentation)
- Thuringer Ministerium fur Bildung, Wissenschaft und Kultur [BSIS-07008]
- Project of the Friedrich-Schiller-University Jena
The aim of this contribution is the application of matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI) in the area of photolithographic structuring. As proof of concept, this method was used to image an UV exposed negative photoresist layer, which is generally used to manufacture printed circuit boards (PCB) for electronic components. The negative photoresist layer consisting of the main component novolac, benzophenone as the active component, and the solvent tetrahydrofuran was mixed with the matrix dithranol and the salt additive LiTFA and spin-coated onto an ITO-conductive glass slide. To imprint an image on the created surface, a transparency with a printed wiring diagram was placed on top of it and irradiated by UV light for 15 min. The inspection of the efficient imprinting of the microstructure onto the photoresist layer was performed by MALDI-MSI. This unique application represents a further step toward the surface analysis of polymer films by this emerging life science imaging technique.
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