Abstract
Three new triphenylamine derivatives bearing formyl groups were synthesized and tested for their suitability as photo-initiators for multi-photon lithography. The efficiency of the photo-polymerization was tested by two different setups and for a variety of applications. Based on their broad fabrication window, the well-defined 3D prints in the sub-micron range (resolution and aspect ratio), the solubility, we demonstrate these photo-initiators are a viable alternative to standard photo-initiators.
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Acknowledgements
The authors would like to thank Mrs. Aleka Manousaki for SEM technical support. Aix Marseille University and the Centre National de la Recherche (CNRS) are acknowledged for financial supports. This research was also funded by the Agence Nationale de la Recherche (ANR agency) through the PhD grant of Guillaume Noirbent (ANR-17-CE08-0054 VISICAT project) and HELLAS-CH (MIS 5002735) project implemented under “Action for Strengthening Research and Innovation Infrastructures” funded by the Operational Program “Competitiveness, Entrepreneurship and Innovation” (NSRF 2014–2020) both co-financed by Greece and the European Union (European Regional Development Fund), and FEMTOSURF, the European Union’s Horizon 2020 research and innovation program under grant agreement No. 825512.
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Ladika, D., Noirbent, G., Dumur, F. et al. Synthesis and application of triphenylamine-based aldehydes as photo-initiators for multi-photon lithography. Appl. Phys. A 128, 745 (2022). https://doi.org/10.1007/s00339-022-05887-1
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DOI: https://doi.org/10.1007/s00339-022-05887-1