Two- and three-photon processes during photopolymerization in 3D laser printing
Anna Mauri, Pascal Kiefer, Philipp Neidinger, Tobias Messer, N. Maximilian Bojanowski, Liang Yang, Sarah L. Walden, Andreas‐Neil Unterreiner, Christopher Barner‐Kowollik, Martin Wegener, Wolfgang Wenzel, Mariana Kozłowska
Abstract
intermolecular electron transfer after the photosensitization of the photoinitiator to the lowest triplet excited state. Our quantum mechanical calculations demonstrate photophysical processes upon the multiphoton activation of DETC and explain different reactions for the radical formation upon DETC photoactivation. This investigation for the first time describes possible pathways of FRP initiation in 3D laser nanoprinting and permits further rational design of efficient photoinitiators to increase the speed and sensitivity of 3D laser nanoprinting.