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5 March 2021 Triphenylamine-based aldehydes: Photoinitiators for multiphoton polymerization
Dimitra Ladika, Maria Farsari, Frederic Dumur, Guillaume Noirbent, Didier Gigmes, David Gray, Areti Mourka
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Proceedings Volume 11675, Synthesis and Photonics of Nanoscale Materials XVIII; 1167509 (2021) https://doi.org/10.1117/12.2585706
Event: SPIE LASE, 2021, Online Only
Abstract
Photopolymerization of (meth)acrylate-based formulations has become a widespread method for industry due to the high energy efficiency and low curing times of this technology. Various products from simple coatings to more complex applications such as additive manufacturing technologies are based on this versatile method. Common industrial radical photoinitiators are generally based on aromatic ketones. Benzaldehyde is an organic compound consisting of a benzene ring with a formyl substituent. It is the simplest aromatic aldehyde and one of the most industrially useful; for instance in the preparation of various aniline dyes, perfumes, flavorings, and pharmaceutics. Parallel to this, triphenylamines are extensively used for the design of dyes used for solar energy conversion. In this work, three triphenylamine derivatives bearing formyl groups are as a new substance class of multi-photon lithography photoinitiators. The photophysical properties of the PIs were investigated by UV−Vis abs
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Dimitra Ladika, Maria Farsari, Frederic Dumur, Guillaume Noirbent, Didier Gigmes, David Gray, and Areti Mourka "Triphenylamine-based aldehydes: Photoinitiators for multiphoton polymerization", Proc. SPIE 11675, Synthesis and Photonics of Nanoscale Materials XVIII, 1167509 (5 March 2021); https://doi.org/10.1117/12.2585706
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KEYWORDS
Polymerization
Absorption
Additive manufacturing
Emission spectroscopy
Energy efficiency
Fabrication
Lithography
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